2016 escalade fan keeps running

So my engine Cooling Fans come on and stay on indefinitely. This is with AC off, ECT temperature is irrelevant, both Fans are stuck on around 81% duty cycle at all times. If AC is on, both are commanded at 100%. (Via HP tuners scanner) If the key is ON but the engine is OFF, the fans are not being commanded to come on which is telling me that ...

2016 escalade fan keeps running. Escalade, EXT and ESV Forum - 1999-2006 ... My 2005 ESV's fan motor keeps running even when shut off, my fan controls don't work at all. Can anyone help?

3. Bad ECU Unit. Your Chevy's engine control unit signals the fan when to turn off or keep running. A defective ECU will result in the fan not knowing when to stop running. 4. Low Coolant Level. The car coolant is the liquid that removes heat from the radiator. The lower the coolant level, the less effective it'll be.

Nov 11, 2021 · 2016 temp gauge not working, radiator fan runs constantly, 3.6L. All of a sudden, the temperature gauge doesn't work (stuck on "L") and the radiator fan runs on high as soon as the car is started. The fan continues to run for a few minutes after shutting off the car. The auto stop/start feature also is disabled. The ECM closely monitors how long the engine has been running and the vehicle speed to determine when the coolant temperature should be within range. It also monitors data from the engine coolant temperature (ECT) ... Replace cooling fan: $550 to $800; Repair/replace wiring or connector: $50 to $550; Replace coolant temperature …Radiator fan staying on all the time. I have a 2016 Colorado 3.6 with 231,200 miles on it. A week ago my radiator fan started coming on as soon as I started the truck and would stay on while driving. Temperature never got over 160. When I shut the engine off the fan would stay on for about 5 minutes and then shut off.Battery issues: A faulty battery can lead to abnormal electrical behavior in your car. If the battery fails to provide the required power, it can cause the fan to keep running even after you’ve turned off the engine. Faulty fan relay: The fan relay is responsible for controlling the operation of the fan.I let it run for an hour, I know it can stay on for a short while after the car is off, normally it doesn’t though. Yes the fan stays on when cold and engine off. Was definitely a stuck micro relay, I heard it click after I removed it and it unstuck and when I plugged it back in the fan shut off. AndreyCaddi.Meet the Experts. Cooling fan stays on continuously. 2015 Ford Edge. I swapped relays 59 and 60. The relays for the fans. It starts - Answered by a verified Ford Mechanic.

For the first time since I bought my A4 in November 2016, the cooling fan ran on high speed for about 5 minutes after I turned off the car today. I have never heard it running before today. I believe it had been running on high speed for some time, since I heard some unusual noise while driving. It was about 70 degrees here today, so I doubt it ...In the world of college basketball, staying up-to-date with the latest scores and analysis is essential for fans. With ESPN College Basketball, fans have access to a wealth of info...larry arizona. 17457 posts · Joined 2012. #4 · Apr 9, 2016. Just means your car has reached a certain temp and its normal for fans to run for awhile when car shuts off. The ECT will increase when the car initially is shut off. 679RWHP 662RWTQ. BMF cam. Ported SC/Snout/90TB. Kooks LT w/cats stock muffs.The cooling fan is powered by a relay in the Front Fuse Box, R12. This in turn is turned on the the ECR (engine control relay, I guess) relay R14. R14 is turned on by the ECM (aka ECU). The fan controlling module is also controlled by the ECM. Thus to run the fan, R12 needs to be on to supply power to the fan module, and the fan module will ...The front right passenger side power running board motor & bracket assembly compatible with: 2015-2020 Cadillac Escalade ESV Base Sport Utility 4-Door. 2015-2020 Cadillac Escalade ESV Luxury Sport Utility 4-Door. 2015-2020 Cadillac Escalade ESV Platinum Sport Utility 4-Door. 2015-2020 Cadillac Escalade ESV Premium Luxury Sport Utility 4-DoorIf a car keeps running after the ignition is turned off, it is likely due to an issue with the engine or the car's electrical system. Some common causes include: A malfunctioning idle air control valve (IAC) can cause the engine to stay running after the ignition is turned off. A problem with the throttle body or the throttle position sensor ...3746 posts · Joined 2016. #24 · Feb 6, 2022. The relays are triggered by a ground signal, there are 2 wires coming from ECM that trigger them to come on with ground. One of those may be broken and contacting body somewhere and allowing the fans to be stuck on.

Allows you to put airflow exactly where you need it. Directs air to torso. Directs air to feet. Directs air to windshield, outboard air conditioning outlets and side-window outlets. Automatically engages AC to reduce moisture. On vehicles that have Air Distribution buttons, you can control multiple airflow paths in combination.More about Cadillac Escalade fuses, see our website: https://fusecheck.com/cadillac/cadillac-escalade-2014-2018-fuse-diagramFuse Box Layout Cadillac Escalade...Battery issues: A faulty battery can lead to abnormal electrical behavior in your car. If the battery fails to provide the required power, it can cause the fan to keep running even after you’ve turned off the engine. Faulty fan relay: The fan relay is responsible for controlling the operation of the fan.621 posts · Joined 2007. #7 · Jul 8, 2017. I really like this feature, however as i live in South Ontario, almost none have them. They get clogged with snow from your boots then squash it all in to the sill panel and damage the board motors (and sill panel). Most trucks here at the OEM running boards (which i think look ok, but its a ...my 2016 camaro with a 3.6 v6 is showing low coolant temp, the fan is running and the gauge is bottomed out. heater blow hot like normal. once I kill the car, the fan continues to run for quit a while. … read more

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Jan 19, 2019 · Conditions: Air temperature 30 degrees F. Front defrost button on. Auto shut off mode was active (fuel saving mode). As some point along her 20 mile trip the radiator cooling fan came on. I thought this was odd due to the air temperature. At stops the engine shut off as expected. Cooling fan continued to run. Homeowners should use the “on” switch for the fan of an air conditioning unit sparingly, running the fan for a few minutes after the cooling part of the unit has stopped, according...The brands we work with are sure to keep that 2016 Cadillac Escalade ESV running right for years to come. In our inventory you'll find brands like Dorman, Carquest Premium, Moog, ... AC-Condenser-Fan-Assembly_Radiator-Fan-Assembly_Overview. Popular Cadillac Parts. 1990 Cadillac Allante Replacement Sunshades.Feb 9, 2016. #1. During the last three weeks, my CX-5 twice had the cooling fan running after I turned off the engine. The fan ran for about 1-2 minutes. I know it's normal to have the fan keeps on running if the engine is hot, but I'm talking about driving in 25-30F of Minnesota winter, my garage is not heated, usually stays about 45-50F. The ...Reconnected battery and started the truck up, coolant temp came up from 160 and the fan did not come on. Im thinking the coolant temp sensor had a freakout …The voltage should be between 13.5 and 14.8 volts with the engine running. Switch on the accessories in your Escalade, for example, headlights, AC fan at full speed, and interior lights. The voltage should remain around 14 volts. If it drops and remain below 13.5 volts, it indicates a problem with the current supply from the alternator.

Finding the source of a dead short that keeps blowing fuses can often be a real headache. Systematic troubleshooting procedures are needed, along with a good...It could be related to faults found in the fan relay, temperature sensors, ECU unit, high-pressure switch, coolant liquid, or the thermostat. Additionally, it may be programmed to run the cooling fan to blow air at the turbo to prevent “coking” the oil when the car is shut off. To troubleshoot the issue, you can check your engine coolant ...Conclusion. Car fans staying on after the engine is turned off may be caused by several reasons, such as low coolant level, malfunctioning cooling system, still-on A/C system, electrical issues, or computer control. A low coolant level can cause the engine to run hot, resulting in the need for the fan to run more frequently to keep the engine cool.Some customers may comment that the blower motor is inoperative or continues to run after the vehicle has been shut off. Cause. These conditions may be caused by a blower motor control module failure. This failure may occur when the vehicle is operated in ambient temperature conditions of-23 °C (-10 °F) or below.The blower motor will be activated at medium speed 45 minutes after the ignition has been turned off. The battery must have 12 volts minimum and outside temperatures must be 21°C (70°F) for higher. Afterblow air will be delivered through the last mode setting made by the vehicle operator or automatic system.First post, be kind. I have just acquired a Mk 6 Fiesta Style Climate, 1.25 petrol, 93k miles. Loving it so far. One small issue - the cooling fan runs constantly, even from a cold start. From the Haynes manual, I believe the fan is thermostatically controlled and should only come on when the engine starts to overheat.Your Cadillac fan may keep running due to issues like a faulty temperature sensor or relay, low coolant, or problems with the fan motor. Why Is My Cooling Fan Not Shutting Off? The cooling fan may not shut off due to issues with the thermostat or a malfunction in the fan relay.There is a sensor for the fan at the bottom of the radiator that should also be checked to make sure it is sending the signal to the fan motor. Lastly, when the engine is overheating, turn on the heater. If the air coming out of the vents is hot, then you have enough coolant inside the engine to operate the heater and might indicate a problem ...NewYorkBill. 248 posts · Joined 2016. #2 · Jun 12, 2017. The system on my car works sometimes, but is generally weak. The only way to get the fans to blow high on Auto is to set the temp at 60 and hope for the best. Fan speeds are barely noticeable at 70-71 degree settings even though it should be working hard to achieve that temp range.2016 Terrain Temp/Fan/AC issue. Last night while driving home my A/C quit blowing cold. I also noticed the temp gauge was staying on cold, not moving at all. When I was home and turned it off, the fan stayed running for 4-5 minutes. Went to bed and tried again this morning thinking it was a glitch. It's still doing the same thing.Chevy Mechanic: DarrenD41. It is caused by a trouble code being stored in the PCM (powertrain control module). It is a protection feature that enables fan to run when off to keep engine from overheating if there is a problem. Scan for codes and there will be some stored in there.

Happy Friday night, everyone! I live in Massachusetts and it's 20 degrees out with a crazy wind chill. I just got home from picking up a pizza and the electric cooling fan in my '18 Titanium kept running when I shut the engine off. It's really LOUD, too. I got my owner's manual out and found that relay #15 controls the fan, so I grabbed it and ...

The average cost range for replacing a Radiator Fan Relay of a Chevrolet Suburban falls between $39 and $46. 2. Replace the Temperature Sensor. Often, the problem lies in the temperature sensors. Unplug the sensors and check if the fan will stop. If it stops, then the sensors are faulty and need replacement.The cooling fan relay is an electromagnetic switch that controls the power supply to the engine's cooling fans. Without it, the cooling fan won't work. Without the radiator fan, your engine can run hot and be at risk of overheating. A faulty relay can be caused by a bad relay control module, ants in the relay, or an electrical short.Regarding the comments about lifter problems, noise and V8 versus V4 mode; I installed a Range AFM disabler to keep the engine in V8 mode all the time. I also run one in my '16 Corvette 8 speed auto & my 2020 Cadillac CT6. The Range works perfectly in all 3 vehicles. Yes, there is a very slight decrease in MPG but not enough to bother about.46 posts · Joined 2018. #1 · Dec 15, 2018. My 2012 the last 2 weeks has had the engine fan running, when typically it would never run. I'll remote start the car and the fan will run the whole time. Usually it would shut off. It's 32 degrees here in Michigan now but the fan keeps running. Even when driving. My temp is steady at 210.The system is operating as designed. 1. When the engine coolant temperature reaches 108 degrees Celsius (due to heat soak), the cooling fan will activate until the coolant temperature drops below 105 degrees Celsius. During this period, the fan has a maximum run time of 900 seconds (15 minutes) due to power management.Silverado engine installing fans electric chevy 2004 running keep coolWhat does it mean when your car fan keeps running 2014 chevy silverado fan keeps running03 silverado 2500 electric fan conversion (9 blade hd fans). ... assembly dual sierra 2007 engine fits escalade esv avalanche blower oe dormanChevrolet silverado 2500 hd …Engine temps are usually around 200 degrees at operating temperature. If there is an issue with the cooling system, the computer will default to prevent the engine from overheating, even if it's not really overheating. In some cases it will even disable the A/C. You might have a problem with the cooling system, hard to say.I recently saw a YT video where a guy had your same symptoms on his Escalade. The sensor had failed, making the gauge read "0". As a failsafe since it has no idea what the actual coolant temp is, the PCM commands both fans on high speed and keeps the A/C off to prevent extra heat from the condenser.#1. cleancut41. TYF Newbie. Joined. Nov 20, 2021. Posts. 12. Reaction score. 8. The radiator cooling fan on my 2016 GMC Yukon Denali, 117,000, runs on high after start and continues to run for a couple minutes after engine is shut off. This hasn't happened before. The temp gage stayed on zero (160) after a 10 mile drive.

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Usually a faulty cooling fan relay will produce a few symptoms that can alert the driver that service may be required. 1. Engine running hot. One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. If you notice that your engine is running at higher temperatures than normal ... Thanks for posting on r/MechanicAdvice!This is just a reminder to review the rules.If you are here asking about a second opinion (ie "Is the shop trying to fleece me?"), please read through CJM8515's post on the subject. and remember to please post the year/make/model of the vehicle you are working on. 2012-2016 VW Passat TDI forum Fan keeps running after engine is stopped. Jump to ... Fan keeps running after engine is stopped. Jump to Latest Follow ... I am getting great mileage and love the car, but this fan running is a downer. Save Share. Like. P. phlfly.Silverado engine installing fans electric chevy 2004 running keep coolWhat does it mean when your car fan keeps running 2014 chevy silverado fan keeps running03 silverado 2500 electric fan conversion (9 blade hd fans). ... assembly dual sierra 2007 engine fits escalade esv avalanche blower oe dormanChevrolet silverado 2500 hd …P0480 is a diagnostic trouble code (DTC) for "Cooling Fan 1 Control Circuit Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154.99 .The Pakistan Super League (PSL) has taken the cricketing world by storm since its inception in 2016. With top international players and a passionate fan base, PSL matches are a spe...If the fan doesn't stop running, plug that sensor back in and unplug the coolant temp sensor on the thermostat housing. If the fan stops running, replace that sensor. If the fan still runs after unplugging both sensors, then problem might be with radiator fan control module located behind the glove box. Tester.I took the car for a fairly long drive and returned home. I put it in park, pressed the start/stop button to turn off the car, the dash lights cycled down like it normally does, but the engine did not stop running. I tried to use the RKE (Remote Keyless Entry) transmitter (key fob) to stop the engine, it didn't work either. ….

Disconnect your battery for a couple seconds and then restart your truck, if the temp gauge works than it's probably not your sensor. When the truck senses incorrect temp (thermostat being stuck) it goes into a fail safe mode where the temp gauge reads nothing and fan stays on. 2. Reply.2016 Escalade: CEL on, engine off but fan keeps running Locked post. New comments cannot be posted. Share Sort by: Best. Open comment sort options. Best. Top. New. …New Issue. Cooling fans stay on after the engine is off, the fan turns off in about 2-4 minutes. -No Trouble Codes. -The coolant reservoir level is much higher than usual, almost to the top. -The engine coolant gauge is working since it rises slowly and reaches mid-level (normal temperature) once the engine is warm. Sep 7, 2023.I have a 2016 Ford Edge. The cooling fan will not stop running. I've driven it on several errands today and it was parked for over an hour the first time and about 40 min the second time. It was running both times I got back to the car. Just got home and its still running. I replaced a failing battery 2 weeks ago.Meet the Experts. Cooling fan stays on continuously. 2015 Ford Edge. I swapped relays 59 and 60. The relays for the fans. It starts - Answered by a verified Ford Mechanic.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...A couple of weeks ago the electric radiator fan came on during a 2 hour drive and was very loud. After that day, that fan now comes on at full speed whenever driving more than about 10 miles on the highway. At full speed, its loud! I took it into the dealer and they replaced the TIPM computer and said it was fixed.Now you know that - in many cars - the electric cooling fan circuits are hot all the time. Something goes wrong and the fan (s) run whether the key is on or off. Please update your profile to show which model year your SRX is - it sometimes makes a difference in parts and advice. If it won't run, chrome it.2016 chevy silverado fan keeps running after engine is shut off. Not really - Answered by a verified Chevy Mechanic. We use cookies to give you the best possible experience on our website. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them.The car shuts off blower keeps running until I️ pull - Answered by a verified Cadillac Mechanic ... My 2016 Escalade has been hacked by the remote key fob ... I have a Cadillac Escalade and when I turn key off and open the door the radio goes off but the air fan keeps running. I open the hood and took the fuse out and it quits. 2016 escalade fan keeps running, The ECM is not reading any valid temperature. The fan keep running after switching off is a safety measure when the ECM cannot read the temperature it will keep the fan blowing for 10 to 15 mins after you switch off to make sure the car is not in a situation where it can cause a fire (as the ECM cannot determine if the engine is ice cold or ..., 01/08/21 20:42:16 31S2A620_243. The auxiliary fuse box is located on thedriver'ssidenearthebrakefluid reservoir. To open it, push the tab on each side and remove the lid. If something electrical in your car stops working, the first thing you should check for is a blown fuse. Determine from the chart on pages and , or the diagram on the fuse ..., Oct 28, 2022 · Coolant temp sensor replacement Thermostat & Coolant temperature sensor replacement: Yukon, Tahoe, Sierra, Silverado, Escalade GMhttps://youtu.be/7mJF5LQ3oPs... , Causes of a P0128 code include: A bad coolant temperature sensor. The cooling fan is stuck on. A bad intake air temperature sensor. A thermostat that's malfunctioning or stuck open (electronically controlled or traditional) 2017 Colorado Z71 3.6L V6 4WD Extended Cab Summit White., When it comes to keeping your home warm and cozy during the colder months, having an efficient heating system is essential. One popular option that many homeowners are turning to i..., This can cause the fan to continue running after the engine is off. To remedy this problem, it may be necessary to replace the malfunctioning thermostat. 8. Leaking Coolant or Low Coolant Level. If there's a coolant leak in the system or the coolant level is low, the engine could overheat. This can trigger the cooling fan to run after the car ..., If this happens to your Accord, you might have a problem that needs fixing. The common culprits are the temperature sensors (your car has two), which are the fan switch and the fan timer module. This article will discuss the three reasons why your fan might continue to run, even after the car is shut off. Figure 1., input. all 3 relays (one Fan and three speeds) can provoke Fan running after car is Off. Precisely Power circuit (not a control) of GM used relays may get remained closed after control circuit is OFF. it is always happened with me while car is hot (here is everything hot at least 10 months in a year). Relay itself works fine while you take it ..., Anybody figure it out. My 2014 GMC Acadia Just started do the same exact thing!! Temp gauge drops to straight down, Fan blowing full and loud, A/C still Blows but Not cold and the recirculation button flashes. Kind of odd that it is the 2014's that have started doing this. Another way for GMC to make up spend money., I have a 2016 Chevy Malibu with 1.5l, and when I turn the car off the engine fan stays running for about 5 minutes what could be the problem. Hello, my name is ***** ***** to just answer! I will be assisting you with all of your vehicle questions today. I'm really sorry that you're having this issue and I'm going to help you through it., The answer is yes while not moving, but you can set them to stay down while in a carwash or parked in the driveway through the settings menu (hard to find)., 107°C-112°C then enable low speed fans. 105°C then disable low speed fans. 112°C then enable high speed fan. 105°C then disable high speed fans. The fans (high and low speed) will turn off after a maximum 5 min. The PCM commands the high speed fans ON under the following conditions: Engine coolant temperature exceeds a calibrated value., if the fan constantly stays on (as long as the car is running), i can think of a few things: 1. an unplugged or bad coolant sensor (see if it's connected, if so try unplugging it and see what happens) 2. a bad fan relay. 3. a low coolant level (did the shop get all of the air out of the system?) Like. 4DZC., P0128 isn't the worst code out there, but you should still have a professional mechanic check your car ASAP. Doing so assures you that your vehicle is always operating at its best, while ..., 46 posts · Joined 2018. #1 · Dec 15, 2018. My 2012 the last 2 weeks has had the engine fan running, when typically it would never run. I'll remote start the car and the fan will run the whole time. Usually it would shut off. It's 32 degrees here in Michigan now but the fan keeps running. Even when driving. My temp is steady at 210., Budding Enthusiast. 3. Name: JONATHAN. Ford Model: Mondeo Vignale. Ford Year: 2018. UK/Ireland Location: Nottinghamshire. Posted September 1, 2019. Hello, we have just purchased a 2018 Mondeo Vignale 2.0 Diesel, since we have had it the cooling fan is constantly on when the engine is running. The temp gauge is showing correct., RepairPal will help you figure out whether it's your Fan Assembly, Fan Clutch, Coolant Temperature Sensor, or something else. 2016 Cadillac Escalade Radiator Fan Not Working Close , 2015 Cadillac Escalade 6.2 fans are staying on while truck is running and stays on about 5 minutes after it is shut off..top radiator hose is cold and the bottom hose is luke warm....I have replaced water pump, thermostat ,and temp sensor. Answered in 6 minutes by: Cadillac Mechanic: AutoDoc1. AutoDoc1. Category: Cadillac., The Pakistan Super League (PSL) has taken the cricketing world by storm since its inception in 2016. With top international players and a passionate fan base, PSL matches are a spe..., Front Driver Side Bumper Fascia Headlamp Opening Flange Support. 23134119. GM. Headlamp Assembly Bracket, Left. Cadillac Escalade. Escalade ESV. Helps keep fascia secure This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors. MSRP $55.36. $37.10., 3. Bad ECU Unit. Your Chevy’s engine control unit signals the fan when to turn off or keep running. A defective ECU will result in the fan not knowing when to stop running. 4. Low Coolant Level. The car coolant is the liquid that removes heat from the radiator. The lower the coolant level, the less effective it’ll be., These may be some of the causes: Not enough coolant: check the coolant level periodically. If the level is under the minimum level recommended, the engine may overheat because there is not enough coolant. The pump may be worn out: it is advisable to change the pump every time you change the timing belt, since there is an excellent cost-benefit ..., Thermostat Replacement. One potential solution to the issue of the Chevy Silverado fans continuously running is to replace the thermostat. A malfunctioning thermostat can lead to engine overheating, which in turn can trigger the fans to operate incessantly. For diagnosing this issue, a code reader can be utilized., Meet the Experts. Cooling fan stays on continuously. 2015 Ford Edge. I swapped relays 59 and 60. The relays for the fans. It starts - Answered by a verified Ford Mechanic., In today’s fast-paced digital world, it is essential to keep our computers running smoothly and efficiently. One of the most common culprits behind a sluggish PC is outdated or mis..., The ECM is not reading any valid temperature. The fan keep running after switching off is a safety measure when the ECM cannot read the temperature it will keep the fan blowing for 10 to 15 mins after you switch off to make sure the car is not in a situation where it can cause a fire (as the ECM cannot determine if the engine is ice cold or ..., The most common reasons a Cadillac Escalade is overheating are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat. 0 %. 41 % of the time it's the. Coolant leak (water pump, radiator, hose etc.) 0 %. 32 % of the time it's the. Radiator Fan., Are you in need of a reliable motorcycle mechanic? Whether it’s for routine maintenance or major repairs, finding the right mechanic can make all the difference in keeping your mot..., The 6.2-liter V8 engine is responsive and torquey, and it sounds good as the revs rise. Thanks to the Escalade's robust power and quick-shifting 10-speed transmission, 0-60 mph comes in at under 7 ..., I have a 2017 CT6 Luxury with 3000 miles. Today, out of the clear blue, turned off the car and heard a very loud noise coming from engine compartment! It sounds like a cooling fan that is very noisy and continues to run for at least five minutes after shutting off vehicle. This has never happened before and it is Saturday night so dealer not open!, I have a 2010 Malibu 2.4l and yesterday I noticed this loud noise coming from the engine. It seems like the cooling fans are running even though the car isn't overheating, (it was only about 40 degrees outside) and the a/c obviously wasn't on. I let the car sit overnight, went out and started it and after about 5 seconds, they came on again., Regarding the comments about lifter problems, noise and V8 versus V4 mode; I installed a Range AFM disabler to keep the engine in V8 mode all the time. I also run one in my '16 Corvette 8 speed auto & my 2020 Cadillac CT6. The Range works perfectly in all 3 vehicles. Yes, there is a very slight decrease in MPG but not enough to bother about., 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. Replace the fuse or refill the coolant. However, faulty temperature sensors, coolant fan relays, and broken thermostats can be the reasons for that issue.