Silverado engine temp low.

Silverado engine temp low Oct 7, 2018 · It starts great and in gears 1-3 if you really romp on it it will get up and go. word you never wanted the Engine Oil temp to get 10-15 degrees above or below the water temp 3. com Mar 5, 2013 · A good indicater is the temp gauge in the dash, straight up, at 12 o'clock is the correct temp position. 5°C (202°F) . If I turn off the heat, temp rises to it's normal mark around 210. The problem that a lot of folks run into is that th Oct 18, 2022 · 4. Aug 14, 2024 · It's working at design temp. Jun 3, 2012 · The engine is not actually running cooler, it's usually caused by water not touching the temperature sensor. The normal running temp is slightly higher than before but no leaks. Coolant level would not stay full. Truck was slow to heat up according to the ECT sensor so I first May 19, 2022 · 2017 Chevy 1 ton silverado High Country with the Duramax motor. Idle is stable, wide open throttle is stable, all other regimes does not seem to exibit any issues. however, the coolant in the overflow tank is all the way up to the neck of the bottle where it should be, both when it's cold and warm. Mar 29, 2023 · Right off the top of my head, I would say the engine temp sensor is not reading correct. Feb 9, 2022 · Likely still has air in the system. Fuel pump is not that old and was replaced in 2012 with a new Delphi unit. Then one day the check engine light was on so I had the codes ran and it said it was either the thermostat or the temp sensor, but then the light went off and all was Dec 2, 2024 · I have read a few threads and watched some you tube videos but I have not solved my issue. 7. I have to dri e with the heater on high So it doesn't get too hot. Jan 5, 2010 · No heat, low engine temp, and less Antifreeze. Jan 3, 2020 · I have a 2014 Chevy Silverado 1500 5. Straight up on 210 is normal. 8 liter motor in my Peterbilt will not activate the fan until the water temp hits 230. Just drive it. With this information, the engine control module adjusts the air-fuel mixture depending on the temperature. Dec 31, 2023 · Basically, as the engine warms, the oil pressure drops from normal to near zero, but pops back up again for a moment if I restart it. The common causes and diagnostic process are discussed here. The engine coolant temperature sensor’s job is to measure the coolant temperature for the engine control module. A/C worked, fans on normal speed, and the coolant temp read a normal temp. Table of Contents. The engine temp has been 40 degrees lower than normal. 0L Diesel in October, 2022. I don't see any coolant leaks and I replaced the coolant temperature Dec 9, 2019 · High Temp Gauge– The bad smell and high temperature gauge should be about the only symptoms your Silverado should have. • Engine should reach an operating temperature of 90°C (194 °F) and the upper radiator hose should be HOT. Mar 6, 2012 · Hello, I've got a new to me LB7 and I think that the temperature is a little low. 1999, 2000, 2001 Feb 26, 2018 · So about two months ago my temp gauge quit working and my truck started throwing the low circuit coolant temp code. I went to Advance Auto (Carquest) and purchased a new coolant temp sensor and switch. And no more codes. the sending unit is a separate piece in the line between the stepper motor and sensor that basically captures and transfers the engine information To your gauges (stepper motors). Once I get the truck running Sep 13, 2019 · Your engine temperature sensor is responsible for relaying your engine temp to the ECU. Hard throttle does not make the problem worse. This engine does not have an EGR Valve (Drive By Wire engine) 7. •A/C refrigerant pressure exceeds 1447 kPa (210 psi) . Feb 1, 2012 · The normal range of temperature for a vehicle's engine is 195 to 200 degrees Fahrenheit. NO POS F. Coolant was almost a gallon low when I took it to the dealer for a check. The cooling fans just recently started staying on after I shut off the engine. In this video, I have a 98 chevy pickup with a coolant temp gauge that started to read lower then normal. • If engine oil pressure is less than normal, replace the engine oil filter and retest. The ideal temperature for transmission fluid is between 175-200 degrees Fahrenheit. this usually results in higher temp gauge 2. 00 and under code readers have live data capabilities. Mar 17, 2012 · well found out the predator does tell engine temp, and after a 25 min ride to work this morning i checked the temp. 1 – Thermal Strain on the Engine; 1. Are these 2018 temps top hi for hiway driving? Thanks Feb 8, 2019 · Im having some cold starting issues with my 95 2500 5. A thermostat failure Jan 15, 2020 · I have a 2014 Silverado Z-71. Oct 30, 2021 · The dash temperature gauge is controlled by the temperature data on the vehicle's CAN bus and since that signal is "0" the gauge reads the minimum which is 160F. My Temp gauge went flat. On occasion the temp gauge creeps past 210 deg. If you watch the gauge, you will notice it moves in increments for the most part. Head unit ghost touches, cooling fans staying on, temp gauge readings, low power/fuel economy Sep 22, 2017 · I own a 1996 chevy pickup c1500, before I replaced the temperature gauge sensor, the gage read two lines below 210, after I replace the temp gradually climbs pass 210 almost to the right but the engine not as hot as where the gage reads, need advice. A low coolant temperature produces a high resistance (100,000 ohms at -40°C/-40°F) while a high temperature causes a low resistance (70 ohms at 130°C/266°F). It would stay there for a bit and come back down to 210. Aug 13, 2012 · THE PCM commands the low speed cooling fans on when engine coolant exceeds 220 degrees. And 64PSI engine at idle while at temp. A faulty temperature gauge can slow down your vehicle’s performance and fuel economy. It will adjust power percentage based on temp. Engine predominantly ran colder than right in the middle of the gauge (around 190 degrees) and oil pressure sat a steady 40 psi cruising. Sometimes it just slowly and eventually gets to 210 even with the heat on approximately an hour, sometimes it just sits at 180 until I turn heat off. Low engine oil level in Silverado 1500 can also contribute to engine overheating, although the direct relationship is not as obvious as some other causes. 2002 Silverado LS Ext cab long bed 5. With the surge tank cap removed, start the engine and race it to 2,000 -2,500 RPM until the engine reaches normal operating temperature. If the fans don't come on at the temp. So, it is best to get your temperature gauge checked and fixed – or to inspect other possible causes of the problem sooner than later. 02 Silverado 1500 5. Thanks May 30, 2018 · Same needle position, different temp on the gauge even when converting between C and F. Jun 3, 2023 · I just did an engine swap in my 2000 Silverado. By this time, the coolant level inside the coolant surge tank may be Apr 15, 2013 · I know my vortec runs at 210 normally, but most performance upgrade packages include a 160 degree thermostat iwas wondering if anyone knew if a lower temp opening thermostat would help my truck or hurt it. Dec 18, 2024 · Camshaft bearings are another sign of low oil pressure and require the engine to come out to replace them. Jan 16, 2016 · The engine coolant temperature sensor is a thermistor (a resistor which changes value based on the temperature) mounted in the engine coolant passage. I know you said the temp sensor was replaced; but maybe the connection, or the ground is dirty. The PCM commands the high speed cooling fans on during the following conditions: engine coolant temp. Nov 6, 2018 · As part of your Silverado’s computer system, your Engine Control Module (ECM) tracks various engine conditions, such as air temperature, engine speed and load, coolant temperature, etc. 2 Silverado I took it back in because the cooling fans were coming on often. I thought it Jan 11, 2025 · 2014-18 Silverado 1500 (2016) having several issues. It's pretty quiet unless it's really running on high power. The idea with the rad cap is to remove it and run the engine up to May 17, 2024 · There are lower temp thermostats available, like 180 degree, and almost certainly even lower (170, 160, etc). 8. some Dec 9, 2024 · Is it true that normal operating temps for this engine with original factory thermo should be 210 year round? That is my usual operating temp in warm weather. I filled the coolant as usual. Bad Thermostat (Stuck Open) The temperature gauge will likely read cooler than usual. Idle until the engine is at the operating temp and rev engine a few times to 2ooo RPM, next add coolant to the full hot mark and the air should be removed from the system. You may also get the check engine light with P0128 (engine temp low). and was also running while driving…. Silverado Running Hot Causes. This can happen if the transmission fluid is not warm enough. 3L V8. Is this normal? I asked the service writer at the dealer they said it's normal. Shows service engine light also. Maintain the coolness of your engine and keep your Silverado functioning at its peak with this Jet Performance Products Low Temp Thermostat; 180 Degree. Jan 5, 2021 · Engine temp too low / no coolant Jump to Latest 17K views 48 replies 13 participants last post by Canyon15QC Mar 18, 2021 Can a Transmission Temp Be Too Low? Yes, a transmission temp can be too low. After the vehicle is shut OFF if the engine coolant temperature at key-off is greater than 101°C (214°F) the low speed fans will run for a minimum of 60 seconds After 60 seconds, if the coolant temperature drops below 101°C (214°F) the fans will shut OFF. The coolant in the vehicle has the vital function of reducing heat from the radiator. When the ECM detects that the engine’s coolant is not reaching its proper operating temperature within a set timeframe, it will trigger this P0128 trouble Jan 11, 2016 · Engine coolant temperature (ECT) sensor -low input (Buy Part On Amazon) Coolant thermostat, wiring short to earth, ECT sensor: We recommend Torque Pro. The guage reads a hair under 210. Feb 27, 2023 · An engine coolant temperature sensor is essential for the optimal performance of your car. I had a 6. you are definitely are having flow issues. Worked fine one day and very next day on start up there it was. Feb 20, 2016 · The temp gauge fluctuates from normal (185-200) jumps to 250-270 than immediately back to normal. Most of the time you won't hear it because it is running on low power. Low engine oil level. that seems low right? outside temp was about 65 2006 silverado 2500hd lly/lbz crew cab 4x4 Nov 3, 2021 · 2016 LML GMC 2500. Check engine light came back after sitting over night and warmed up before heading to work. This one runs Jan 11, 2018 · New member, thanks for letting me join. The fan runs at power level based on engine coolant temp. 8 with 35000 miles I purchase used, 6 In order to keep its good performance, the engine of your Silverado must always stay within the optimal temperature range, which is usually around 190ºF (90°C). When this happens my temp gauge will read zero and when I kill the engine the fans stay on. Any and all help will be appreciated. Cleaned MAF using a MAF cleaner 5. Dec 18, 2014 · A little history might help here. Full article : New Duramax Diesel 3. I put a new radiator and water pump when I did the swap. I've changed them and my temps are still low. outside. I'm feed up and out of idea's and it went into the shop. Nov 22, 2017 · Check engine and codes Low & High volt ECT Overheated motor stop immediately on DIC Erratic temp gauge (but engine not actually doing so) A/C turns off with overheated motor on DIC Only codes in the truck are the P01117 & P01118 Low volt ECT and High volt ect Jan 6, 2016 · The computer will also scale back engine performance settings if it detects that the engine temperature is too high, in order to protect the engine from possible damage due to overheating. Mar 20, 2023 · Hello, looking for help troubleshooting a coolant temperature sensing issue. 3 The other sensor has 2 wires sometimes 3 for the PCM to know what the engine temp is. My '02 HD2500 6. Use an infrared thermometer to check the actual temperature. 3 - 4x4 - Black A cap with low pressure allows the coolant to flow Sep 1, 2023 · My 2014 Silverado (186200 miles) started doing the same thing a week ago. If your Silverado has a bad engine temp sensor the radiator fan won’t know to come on, because the ECU won’t know how hot the engine is. The ECM supplies 5 volts to the ECT signal circuit , and a ground for the ECT low reference circuit. I have searched the "inter-web" for the last few weeks with no luck. Aug 22, 2020 · As a general rule of thumb, (I have a 2015 as well,) your transmission temperature should be 100 degrees plus the outside air temperature. High Idle RPM Mar 5, 2009 · Coolant Temperature too low? Check Engine light. Engine now has 122k miles on it, bought it with 114k. Dec 29, 2012 · with the 1994 engine the temp should slowly rise and not over shoot then not drop too low. Jul 5, 2024 · My 2013 sits at 210 most of the time. Oct 6, 2023 · The temperature gauge tells you about the engine coolant temperature. the connector to this may also be corroded. A malfunctioning thermostat may lead to various issues and should be dealt with immediately. the 4. Checked truck for any codes but found nothing. 3's with a 210 temp thermostat to get better fuel mileage. It shouldn't completely shut off at 210 and below. This is done because the average person freaks out when they see the temp gauge fluctuate. Dec 11, 2024 · No heat, low temp. While your Silverado’s temperature gauge is usually pretty reliable, it still is an electrical device that can fail. The radiator and cooling system can maintain this temperature range with a liquid mixture of 50 percent antifreeze and 50 percent water. Towing in 5th gear, RPMs around 2100, air temp was around 65 and it was at night. Your engine temp with very low load levels should be in the 180-185 range. My old Yukon had a crack head and temp raise to about 230. I replaced the coolant temp sensor and the problem is still there. 3 L . Apr 17, 2023 · 2. Changed the sensor out, added coolant. I don't yet have GM-specific scan tool, but generic one does not show any codes. 2 NHT - 2013 GMC Sierra SLT 6. So I believe it is getting enough fuel, never had this issue before. After getting it back from having leaking intake gasket replaced, the temp would go up to 260 before Jun 20, 2021 · Sorry about the lengthy story. 6L Duramax diesel engine (RPO L5P) may have a coolant leak under the vehicle. To guarantee this temperature, the system has two “auxiliary” pieces that control temperatures: the thermostat and the electric fan. The temperature gauge itself may be malfunctioning. Upon reconnecting the battery, and starting it up, everything seemed back to normal. 2003 Sierra 1500 4. Running rich will in turn cause the following symptoms: 1. Dec 31, 2021 · But today, it happened again, the engine temp reading is staying low at 160-165, doesn't move while driving AND the A/C again is not getting cold, plus I hear the engine fan turning on. 6 Durmax The Temp fuluates between 160 and 260 eratically then I get Engine overheated Idle engine then the 175 miles to 65 mph on the DIC. Ambient at 69. 5. You have a temp gun so map out the hose/line temps back to front of the engine. the engine temp goes up. However, you need to know what the actual temp is when the gauge is reading 240. 6. Took it to have codes cleared but there were no codes. Because temperature plays such a vital role in engine performance calculations, any problem with the coolant temperature sensor can quickly translate into an . This time OEM. A bad thermostat will keep coolant constantly cycling through your Silverado’s engine, which keeps the coolant too cold to heat the vehicle under certain conditions. The trans temp would go up but not the water temp. I have not inspected this but I am confident it is the fixed open style. 185 to 210. The PCV is built into the valve cover. One day I noticed the cooling fans staying on longer after engine shut off, thought nothing of it. 3l ‘14 Sierra it was the coolant temperature sensor…. Run your Silverado engine for 20 minutes so that you can raise the engine temperature. It also was getting enough fuel before the engine swap (engine was only out for a month, the 4. I have a 2015 Silverado 1500 and a couple weeks ago my temperature gauge wouldn't get past about 180-185 degrees. lowers the temp…. With the coolant surge tank pressure cap off, start the engine and let it run until the engine coolant temperature gauge indicates approximately 90°C (195°F). regardless of coolant temperature. Silverado 1500 Pick Up. It happens at part throttle with a slight load. Aug 4, 2011 · All I have the same issue, I own a 1996 chevy pickup c1500, before I replaced the temperature gauge sensor, the gage read two lines below 210, after I replace the temp gradually climbs but the engine not as hot as where the gage reads, need advice Jan 22, 2019 · Cold At idle with heat on warming up, temp gauge only reads 180 degrees. Run it at high idle for several minutes to get good readings. the temp should slowly rise to about 180-190 deg area. There seems to be alot of differing information out there so I thought I would clarify and state the correct information. I have also checked the green wire going to the sending unit by connecting it to ground. Check your coolant. My coolant level regulated and after the first drive the temp started fluctuating from normal temp to just over 210. 5 lmm 2500hd bone stock. Will be doing a pressure test to see May 30, 2017 · Normally the temp needle is right at 210 and from time to time I noticed it was a bit over 210, like maybe 1/8th past 210. Looking at the live data on my OBDII Dec 22, 2022 · I have a 2017 Silverado z71 crew cab. Engine oil plays a crucial role in lubricating various components within the engine, including the pistons, bearings, and other moving parts. 0 liter diesel In it. Bought a 2011 Silverado 4. And the temp rise is rpm based, and with engine load it rise more . 3 Temperature gauge quit working and fans running after shut off. My 2500 diesel ysually ran 100 over ambient on tranny and engine was up and down. You can hammer the gas and it will come up to 210. 0L 6-Cylinder Engine Powers Up Silverado 1500, Sierra 1500 – TechLink (gm-techlink. The shop did a system pressure test and found a leak at the water outlet unit and they replaced 2 water temp sensors. Top radiator hose is hot but bottom is ice cold. But will fall back down when you left off it Jun 9, 2024 · On my 5. The other day I noticed my radiator fans constantly running at full blast and staying on for 5 minutes after shutdown - saw that the coolant temp gauge was pegged low. I went and had the computer read and got a code for coolant temp too low and intake air temp sensor. I have a 2001HD Silverado 6. Coolant level good and temperature running at around 200 to 210 degrees. Checked my oil and I don't see anything in it. Ray '09 Avalanche LTZ - 5. easy fix. I get it in 20 degree temps. Feb 2, 2021 · Honorable Mention: Temp Gauge. With a manual oil pressure gauge, bring the engine to normal operating temperature. I took a long trip last weekend and out of sheer boredom I decided to scroll through the info / odometer display. Mar 5, 2023 · 2015 GMC Sierra 5. On all of my other vehicles (mostly GM), operating temp is 210, however I cant get the Duramax above 170 (according to the gauge it is 180). Apr 1, 2016 · I was going up a good grade about 7% with empty truck for 23 miles and noticed that the engine coolant temp was between 195-202 which seems normal for my truck (Mine hits 210 on the truck gauge when the tuner says 190) however after having a 6. In the 90's we modded our Ford 7. Jan 14, 2016 · The engine temp would not get above around 155 - 160 so I went a third time and got a new thermostat. The temperature gauge stays around 165 degrees, even while driving. I went tonight and got a new IAT and replaced it. Mar 1, 2024 · LM2 as an unusual cooling system that uses a coolant distribution valve - and it has multiple temperature sensors it uses. com) Aug 13, 2013 · From about 160-225 degrees GM makes the gauge read around 200-210. "Why is my Saturday, May 17 2025 Oct 25, 2024 · Finished a job early yesterday and when I started up my truck the fans sounded like a jet engine. Heater core was back flushed. Refer toEngine Mechanical Specification (RPO L96 VIN G)in SI for proper specification. Low transmission fluid can cause the P0711 code to appear. My engine temp stays almost at 210. Ended up being the thermostat was letting too much coolant through, and temps were lower than they should be as a result, so the engine threw a code for “coolant temperature too low” which for some reason shut the coolant gauge off and disabled AC. See full list on cararac. 2 – Illuminated Check Engine Lights; 1. These engines are quite happy running right at or close to the 200 mark and really no reason to change it unless you are doing some involved performance upgrades or building a race engine specifically. Check engine light is also off. More details: When the engine is cold, the oil pressure goes up to ~40psi, as it always has done. I have replaced the thermostat (twice), replace temp sensor (also took the new one out and tested it w my meter), replaced temp sensor connector, changed coolant fluid, reset ECM, twice, removed negative from battery (many times), each time I reset w/ battery and ECM, the gauge would work normal for 40-50 miles then go flat again with "Engine HOT Symptoms of a BAD Engine Coolant Temp Sensor. Not really sure if the sensor is reading correctly or not Feb 28, 2015 · 1993 Chevy Silverado 350 engine temp gauge reads low Unread post by bgbg01 » Sat Feb 28, 2015 5:24 pm My mechanic checked the actual temperature when the engine was at regular operating temperature with his computer and it indicated the actual temp was 185 degrees while the gauge indicates 110 degrees. Runs great just wont tell me engine temp nor allow the a. They topped it off, ran a quick Apr 17, 2018 · 92 Silverado, engine coolant temp gauge has been reading low now no deflection at all, changed sensor top front of - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. The sensor offers good value for money and serves as an exact replacement part. Oct 15, 2011 · The mechanic replaced the thermostat and that solved the low engine coolant code. 3 2wd. The fuel gauge goes to full. 60F and 55-60 ambient, on flat ground with no wind and it will settle at 195 - 198. Sep 4, 2023 · Low Coolant Level. The ecm calculates what it things the engine oil temp is, so they go May 19, 2013 · If I drive it again temp reaches around 210 engine temp and trans. 3 K5L - 2012 GMC Sierra SLT 6. 4. if the hoses are hot also both heater hoses then this can be the temp sender . Designed for daily driving and occasional off-road use, it monitors and cools your system to avoid overheat and improve performance. I changed the water pump thermostat and cool temp sensor 4 months ago in June. After replacing the thermostat, my fuel consuption also decreased. May 3, 2023 · While I'm moving ~60MPH with low throttle and trying to slowly accelerate it stumbles and shakes for a second and then goes. Malfunctioning Gauge. this would also result in a loss of heat to interior heater vents. How do you troubleshoot a temperature gauge not working and fan running? A blown fuse and low coolant are common causes that can be diagnosed and fixed easily. It always happens after driving it, if I give it a little throttle the temp comes down. 8 dual cab. 3l that I am having a issue with the cooling fans running on high occasionally. The Check Engine MIL may be illuminated along with DTC P2C48 (Low Temperature Loop Coolant Pump Performance) set in the Engine Control Module. Often this code causes the Check Engine light to come on and off in cold temperatures. The fans will automatically shut OFF after 3 min. A mechanic would check the temperature of the engine manually with a heat gun in order to ensure that the gauge was reading correctly before tackling the repair. Nov 15, 2020 · I'm not at all afraid of my 2020 LM2 water temp at 220 to 230. Customer: 2011 chevy silverado with the 4. 3 – Emission of Black Smoke Dec 9, 2016 · 3. I’ve only had the truck a few months and after picking it up did a mini overhaul of it (new plugs/coils/wires, new brakes, front and rear suspension, fluids all Nov 12, 2023 · 2014 Silverado 1500 5. Normal cruse speed of 60mph and rpm of 1500 it's running 214 and showing 210 put it in manual mode same speed and rpm of 2200 temp goes to 220 on scanner and gauge show about 215, punch it or go up a long incline and temp goes Feb 20, 2012 · Mine stays at 210 also. Normal temp runs at the 190* mark and is steady there in cooler or non AC temps. We don't have extremely cold winters here in Virginia but I've noticed that my engine temp rarely gets over 160 to 175 in weather cooler that 50 degrees. . Is it normal for the low cooling fans to come on at 226 degrees and the temp gauge to read close to 3/4? Dec 8, 2024 · The open road beckons, the engine roars, but suddenly a warning light flashes, and your Chevy Silverado’s temperature gauge climbs precariously. How to test th Engine Coolant Temperature (ECT) Circuit Low Input. (160 or 180 is possible) Apr 7, 2023 · Most importantly, if you have a 2014 Silverado temperature gauge not working, this can increase the possibility of an engine overheating issue. Engine is normal temp with temp gun 196 degrees. If the fluid is below this range, it can cause shifting problems and premature wear of the transmission components. 2 GAT “Woe unto them that call evil good, and good evil; that put darkness for light, and light for darkness; that put bitter for sweet, and sweet for Nov 10, 2019 · The thermostat in your Chevy Silverado's engine plays a crucial role in regulating its temperature. Orabout the same as a typical shower. Of course, you could check the sensor old school with a meter. Without water touching the sensor it will read lower. the pcm does look at the engine Jan 13, 2021 · Another 3 weeks go by and the coolant level is low again. Jan 23, 2023 · I experienced a temperature spike on my 2021 3. 210°F (or around 90°C) is the normal operating temperature. Still engine temp won't get above 155 - 160. Like I said runs as good as it did before. Apr 14, 2019 · I have a 2009 4. 1 What Are the Symptoms of Chevy Coolant Temperature Sensor Issues?. 6L: Code P01F0: coolant temp dropped below diagnostic monitoring temperature. I took the reading via my OBDII reader, it is 170-172F. In particular heater core and upper/lower radiator hoses. What could cause the engine to run at a lower temp and is this harmful to the engine itself? I ran across this post while searching for a way to repair the temperature gauge which is reading below 100. With 186k miles. So I replaced the thermostat with a new 195*F thermostat and that finally solved the low coolant engine temperature fault code. 210. it's my first Diesel engine so not sure what is normal and not Feb 26, 2018 · So about two months ago my temp gauge quit working and my truck started throwing the low circuit coolant temp code. Jan 7, 2015 · First I would like to say thank you to all of you who have helped me with all your wonderful information. Yes, if not operating at the correct temp, the engine may not/will not run at the peak of it's ability. No more ice & snow building up inside my engine compartment. No white smokes from my exhaust. Put that in. Overheating When the temperature of the engine goes above 200 degrees, boiling of the coolant solution can cause When the transmission fluid temperature increases above the usual range, the OBD-II scanner detects the issue. 3 motor. • Engine Coolant Temperature between 50 and – Engine mechanical condition, for example low 2019–2021 Silverado 4500, 5500 and 6500 HD Models. Fwiw, LZO version of 3. temp 139 after 2 miles. With the coolant surge tank pressure cap off, start the engine and let it run until the engine coolant temperature gauge indicates approximately 90 °C (195 °F). The dealership said nothing was wrong and everything was within parameters. ⇒ Verify the oil pressure is within specification. Apr 25, 2025 · JUMP TO TOPIC. The Cat 3406 5DS 15. Coolant is full. Low Engine Coolant Jul 10, 2018 · level go above the indicated mark in the tank until after the engine comes to operating temperature in Step 4. check the temp sensor or relays out. located right by the thermostat housing. Noticed my transmission temp sitting idle for about 20 minutes would reach temperatures of 194-198° F on a nice cool morning, about 65° outside. Apr 9, 2007 · When I first got my truck, the temp gauge worked fine, from a cold start up would go to about 210, then the t-stat would open and the temp dropped to about 170 or so and sat there from then on. Today I changed the coolant temp sensor, still low. Lift the hood and observe the coolant tank. 8l. Ambient temp was about 30 degrees. The heat output in the truck feels low also. BTW engine is not beating. Nov 6, 2018 · The P0128 OBD II trouble code indicates that your Chevy Silverado’s engine coolant temperature has not reached its required operating temperature within a certain amount of time after starting the truck. The 5DS motor pulls best at 220 degrees water temp. Have tried four different thermostats, system has been vacum purged and temperature checked with a computer scanner. Even driving it through the desert with outside temp over 105, the engine temp still stays close to 210. Make sure your system is properly purged and has no leaks. Sep 15, 2023 · Well i just got this thing. exceeds 220 degrees and a\c refrigerant pressure exceeds 265 psi. It has to be a dummy gauge that is showing one temp for a given temp range (For example, showing 195F/197F/94C and staying there if the temp is between 170F and 210F or the like), which is exactly how the trans temp gauge on my Nissan worked. 1. Replaced Engine Coolant Temp sensor and cleared the code. Replace the thermostat. Background on the truck: 2002 Silverado with the 4. Losing coolant but can't find the leak. Feb 13, 2023 · My 2015 Duramax with 130k miles threw a P01F0 code, which my scanner and other threads on here confirm is a low coolant temp. Once the temp gets so hot, the ECU commands the radiator fan to come on. Jul 31, 2021 · The code P0128 - Coolant Temperature Below Thermostat Regulating Temperature means that the engine does not reach expected temperature after running for sufficient time, or in other words, it takes too long to warm up. Jul 23, 2020 · 3. I have a 1992 Silverado with the 4. The A/C also started blowing warm air. I had this issue this year on a S10 truck. 3's use the heater core as the bypass in the cooling system. Oct 22, 2018 · 2017 Silverado crew cab, 4x4, 36k miles. 3L 4x4 Z71. On a 200 mile trip a few weeks ago, with an OAT of 107, towing a 16' cargo trailer at about 3000#, in tow/haul mode my transmission temperature got as high as 209 when going uphill, but settled back down to about 203 on flat road. Here's the problem. It will maintain an optimal temperature within the engine. The engine had always stayed a constant 210 on the gauge, but suddenly started spiking up to 235 to 240. Dec 9, 2022 · Thermostat fixed a silverado with same issue after a temp sensor replacement . c. Any advice would be Feb 4, 2014 · The engine control module (ECM) uses this diagnostic to determine if the engine coolant temperature (ECT) has reached the minimum calibrated thermostat regulating temperature. The vehicle is a 2010 Silverado CC 4. Start cold engine with the system filled as much as you can with the pressure coolant cap off the plastic bottle. •After the vehicle is shut OFF if the engine coolant temperature at key-off is greater than 101°C (214°F) the low speed fans will run for a minimum of 60 seconds . Feb 3, 2017 · Are the engine cooling fan (s) operating properly? The possibilities are: bad thermostat, bad engine temp sensor, or air trapped in the system. My Banks confirms the temp change. I could be wrong but when it was warm Dec 28, 2022 · Because the coolant temperature sensor sends temperature readings to the ECU when it fails it may send incorrect or no data. 0 and was wondering if my temp gauge is malfunctioning. a restricted core will reduce flow causing temp problems in the engine. 0 uses a different coolant distribution valve, with 2 zones instead of three. Sep 25, 2022 · I have a 2018 Silverado 1500 5. It’s possible that the cause lies in an inadequate level of coolant. Some of the most common symptoms of a bad thermostat are no heat, a spiked temp gauge, a blown head gasket, and more. I was Mar 16, 2022 · In any event I decided to go out and examine the engine. A lot of $200. Are you low on coolant? You may have a crack cylinder head worse case. Low Transmission Fluid. It has 124,000 cared for miles. 8 LS. May 11, 2023 · I recently bought a 2019 Chevy Silverado LD 4 months ago with the 5. I replaced the temp sender, coolant tank cap, and have disconnected the EGR plug with no changes. Jan 15, 2013 · Hi there, new to this forum. I replaced both and gauge still would not work and I was still getting the code. No other malfunctions that I can see. This code can appear as soon as you start your vehicle, or it can also occur while driving. Based on other threads here, and what I've researched online, the thermostats were the most likely culprit. 35W 5K HID low,fog, 55W highs, Hi-6 Mod, black tail lights. 2009 GMC Yukon XL SLT 5. 2004 SILVERADO 2500HD LS Pro Comp Leveling Kit 285-75-16 Cooper ST All Terrains Pro Comp Programmer Feb 14, 2017 · 2004 Silverado lly. I think I have it narrowed down to possibly Dec 8, 2016 · My 2012 GMC 2500 HD 6. I always use Valvoline Synpower 5W30 full synthetic and Wix filters, and change it every 3,000-3,500 miles. Last truck was a 2007 silverado classic with a 5. Anything else would be a symptom of overheating. Unlike other threads I have read and videos I have watched, my fan was NOT running after shutting the truck off. Sep 17, 2020 · The engine temperature sensor or associated wiring is failing causing the temperature gauge to drop to zero and the Engine Control Unit/computer/module is shutting down the AC to protect the engine. 1999, 2000, 2001 May 23, 2017 · The truck is an 07. 3 liter. Dec 1, 2015 · "TRANSMISSION HOT IDLE ENGINE" This message is displayed when the TCM detects a transmission fluid temperature (TFT) equal to or greater than 132-degrees Celcius or 270-degrees Fahrenheit for 5 seconds. Mar 19, 2019 · Hey Gang. replaced thermostats and temp sensor. Dec 19, 2015 · Best way to diagnose it is to put a scanner on it with live data and watch check the Engine Coolant Temperature. I only have 45,000 miles on my 10 year old Silverado. 07 lbz silverado 2500 ccsb 285/75/16 cooper discover st's, egr blocker, dual staight pipe exhaust, stage 3 afe May 24, 2016 · Hello guys, I am new to this forum and new to the Chevy Truck scene in general. Dec 7, 2017 · What I see the temp gauge is reading low actually. Here are some of the most common reasons that your Silverado would run hot: 1. Dec 12, 2018 · •Engine coolant temperature exceeds approximately 94. Warm weather the truck comes to temperature just fine. It would just happen randomly during driving and sometimes the gauge would randomly come back. to blow cold. Draw your map and post it. After 3 hours on the highway at 75mph or so, with engine temp at 210 degrees like it always is, trans temp reads between 104 and 109 degrees F. I tow a 25ft TT and going up the California Grape Vine on a hot day the gauge never rises past its normal level even with the air conditioner running. It may be a failing thermostat. 1999 Chevy Silverado 3500 dually 454 gas burner. cgraves817; Jan 11, 2025; Engine & Drivetrain; the stepper motors should be alright should be, but i have seen many go out around 160-180k miles in the form of cluster failure. What do you all think? Bad engine coolant temperature sensor or thermostat? I checked coolant level and it is good. Here is what I call "NORMAL" for this truck, how my oil pressure has Jan 18, 2012 · 05 Silverado 1500 LS 5. I have replaced both the temperature sending unit and the sensor. Clean the throttle body with a TB cleaner. 95-100F and 75-80mph all day, into a head wind and mine only runs 200 - 205. If that's been running for a while, should be dead center. This in 30-48 degree weather. Tran at 194n. 0 just turned 281,000 miles, and has been rock solid for me. But in cold weather (4*) in Missouri today it will only heat to 170ish at low rpm. In these situations, the ECU defaults to the worst-case scenario and assumes that the engine and the weather are cold. I have never had any problem with the cooling until how things went last summer. By this time, the coolant level inside the coolant surge tank may be lower. Sep 6, 2021 · The truck is a 2018 Silverado 1500 LT 4x4 with the 5. did you replace the stat for this issue? any strange gauge readings lately? you could have a couple problems here. Gauges are not immune to failure and can develop faults over time, resulting in inaccurate readings or complete failure. May 12, 2019 · 2009 Silverado 2500HD CCSB LTZ Diesel FASS 95 Lift Pump (with Baldwin filters), Edge Evolution CTS2 Monitor w/Dash Pod Mount, Factory FF as Tertiary Filter, Bilstein 5100 Stock Height, Steel Diamond Plate Bed Rail Caps, AMP Research Bedstep, Fumoto oil drain valve, PS Oil cooler, Pioneer AVIC 7200NEX GPS/Stereo, Air Lift LoadLifter 5000 Air Bags. 0 with electric fans and I know Common signs of a faulty sensor include a constant low-temperature reading or a sudden spike to a high temperature, regardless of engine running time. Alternatively, you can run the engine until the gauge shows that the temperature is high. 3. For the last month or so the low coolant notification pops up on a daily basis on my info screen in the dash. In the event of a low or bad coolant level, there is a reduced capacity for heat dissipation. You’ll need to locate and test the engine Customer: I have a GMC Sierra1500 V8 5. Not really sure if the sensor is reading correctly or not Sep 22, 2017 · I own a 1996 chevy pickup c1500, before I replaced the temperature gauge sensor, the gage read two lines below 210, after I replace the temp gradually climbs pass 210 almost to the right but the engine not as hot as where the gage reads, need advice. 3L. I have had this truck for over 6 years. engine still running it was 168. Feb 23, 2021 · Hey all, I just bought a 2021 Silverado 1500 with the 3. Some things to check: It's possible that a bubble in the cooling system can lead to this. When the ambient temp is low roughly 20 f or lower it has to run for roughly 3-5 minutes before it will go into high idle. S&B intake and mouth piece, mbrp 4inch straight pipe, 3" Mbpr down pipe, deviant EGR delete and up pipe, APR studs, billet water pump, PPE tuner, edge cs insight, cognito stage 3 leveling kit with fox shocks, 285/75/16 w/ stock steel wheels, spyder halo headlights hard wired, spyder led tail lights, pioneer touchscreen Apple play head unit, neoprene seat covers. If the ECT reading isn't matching the actual engine temp, the sensor has probably failed. The only way to shut them off is to crank the engine and shut it right back off. Check engine light is on (constant) and temp gauge still not reading. Then, as the engine temperature comes up off the peg (160) the oil pressure begins to drop. Nov 29, 2018 · 2021 Silverado 1500 4x4 5. Fuel pressure is 57 PSI key on engine off. Nov 8, 2008 · Customers find the coolant temperature sensor works well, particularly on vehicles like the 2010 Silverado and 2002 Silverado 2500 HD, and appreciate its plug-and-play installation that takes just a few minutes. The engine temperature sensor is a common failure and is relatively inexpensive to have replaced. 3 before it ran great no Dec 31, 2023 · The temp was on the low threshold and the computer turns off the gage after it times out to incorrect temp…long fight ! Most dealerships just milk you along! December 31, 2023 at 1:20 pm #794671 Jul 26, 2021 · Some 2020-2022 Silverado 2500/3500 and Sierra 2500/3500 trucks equipped with the 6. Still does this . Continue to run the engine at 2,000-2,500 RPM for an additional five minutes. Apr 9, 2013 · A few days after picking up my 6. Every other EFI engine Ive had when you start it when its cold it will idle around 1200ish rpm. 8L. 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