2016 silverado cooling fan relay location - It could be faulty.

 
There are two associated relays and they are numbered twelve and thirteen. . 2016 silverado cooling fan relay location

Free shipping. The first thing that you would want to do is locate the fuse for your Sonic&x27;s radiator fan and make sure that it hasn&x27;t blown. If your cooling fan runs all the time, or not at all, or if your engine runs hot, it might be time to replace your cooling fan motor or relay. The radiator fan stays on when the engine is off. Buy quality used Front Doors for your 2016 Chevrolet Silverado 1500 Chevrolet Silverado 1500. Tahoe, Yukon, Escalade. Belt driven fans were prevalent for a very long time.  &0183;&32;The engine compartment fuse block is in the engine compartment, on the driver side of the vehicle. Source Chevrolet Silverado 2016 Owner's Manual.  &0183;&32;Search 2016 Silverado Horn Relay Location. Chevrolet Silverado mk3 fuse box engine compartment. The engine coolant sensor or a separate engine temperature switch, is used to monitor engine temperature. 2016-2018 Chevrolet Silverado 1500 Standard Cab Pickup 5. Amperage (A) 30 Amp. The location of the fuses in the passenger compartment Chevrolet . When the AC is turned on, the fan moves air across the AC condenser, thereby removing heat from the refrigerant, which changes from a vapor to a liquid. It incorporates a large radiator (the primary Ford 6. Designed for single or dual fan applications Brass construction for accurate temperature sensing. Fuse FMXJCase. 132 Posts. Black Smoke from the Exhaust Pipe. MSRP 19. Source Chevrolet Silverado 2016 Owner&39;s Manual. And a different 10 amp fuse is for the clutch relay. SAVE UP TO 25 See all eligible items and terms. 5 blade - mini. also felt the click once it was connected to the battery. de 2020. - FAN CNTRL Relay - Cooling Fan Control - FAN HI Relay - Cooling Fan - Right - FAN LO Relay - Cooling Fan - Left - FOG LAMP Relay - FOG LAMP Fuse. I need to replace it but cant find the. (1) 1 product ratings - New Cooling Fan Assembly for Chevy Silverado 1500 Sierra GM3115291 23123635-PFM. It indicates, "Click to perform a search". With the AC on, both fans constantly run, occasionally stopping for about 20 seconds when the temp reaches 3 tick marks below the 210 mark and clicking back on at around 210. The Engine Control Module (ECM) controls the fan speed by sending a Pulse Width Modulated (PWM) signal to the cooling fan control module. Fuse box diagram (location and assignment of electrical fuses and relays) for Chevrolet (Chevy) Silverado 15001500HD2500HD3500HD (1999-2007). Yukon XL. next thing i would check is the thermostat if you're still. Chevrolet Silverado (mk3; 2014-2018) fuses and relays Ad vertisements In this article, we consider the third-generation Chevrolet Silverado, produced from 2014 to 2019. But on sideways mounted engines (think front wheel drive vehicles) a belt driven fan was no longer an option, and electrically driven fans became prevalent. If the fan doesn't come on, we need to continue with the relay and it's wiring. 0 hour of labor. Voltage 12 V. Radiator Fan Motor Fan Assembly Fits 14-19 SILVERADO 1500 PICKUP 3386748. 2014 and newer chevy silverado 5. Cut him off, let it sit for 30 minutes and WALLAH, only one cut on at start of motor as usual and it was back to the normal, low gear fan clutch blowing. Voltage 12 V. Log In My Account yf. It indicates, "Click to perform a search". Ford F150 Radiator Cooling Fan Motor Relay; Chevrolet Silverado 1500 Radiator Cooling Fan Motor Relay;. Remove the relay and supply 12 volts to pins 30 and 85. This is based on the draw from the fans, if the fans are larger and draw more than 15 amps each, it&x27;s recommended to install a second relay kit as shown below. Jun 16, 2020 Premium parts you can rely on Designed to keep your AC system in top shape. 2013 f150 ecoboost and am having the same issue. 65 0. They usually kick on within 10-15 seconds of turning the AC on and run about 90 of the time I&x27;m driving. The cost of this service or repair can vary by location, your vehicle&x27;s make and model, and even your engine type. I have had a lot of people ask me about GM Radiator cooling fan diagnosis in the past. I had something strange happen this morning. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. both fans immediately turned on about 10 seconds after the truck was. 1957 Chevrolet Assembly Manual Download. Trailer brake. I had something strange happen this morning. Engine compartment, micro2, 20 amp. Most auto repairs shops charge between 75 and 150 per hour. My radiator fans are all out off whack (simply put). The KR20D cooling fan high speed relay is COOL FAN HI Relay K612. But on sideways mounted engines (think front wheel drive vehicles) a belt driven fan was no longer an option, and electrically driven fans became prevalent. Submitted 13 years ago. I popped the hood today and started the truck with the air on. P0480 2016 CHEVROLET SILVERADO. It basically runs two fans in series for low speed and then put's eac. When I shut the truck off I heard the fan running on high speed, something it has never done before, in fact I have never heard the fan run on high before even in our Florida summers. The radiator fan stays on when the engine is off. You only have high speed which only kicks in when the pressure gets too high in the compressor then the pressure goes down and it kicks off. Pharmacological (b) (c) (d) Some impotency is to Physical signs of recanalization after vasectomy The closed-ended technique means the testicular end of the vas is clamped with a suture or a clip Check semen analysis 12 weeks after the vasectomy to ensure success Check semen analysis 12 weeks. The 2015 Chevrolet Silverado 1500 has 3 different fuse boxes Engine Compartment Fuse Block diagram Instrument Panel Fuse Block (Left) diagram Instrument Panel Fuse Block (Right) diagram Chevrolet Silverado 1500 fuse box diagrams change across years, pick the right year of your vehicle Engine Compartment Fuse Block 61 62 63 64 65 66 68 72. There are two associated relays and they are numbered twelve and thirteen. If you get power, youve got a bum relay. Chevrolet Malibu (2003) - Fuse Box Diagram - Auto Genius www. On this model I believe it&39;s located above the water pump housing on the front of the engine. Check Engine Light. Related repairs may also be needed. Body compartment-front. Product highlights for the 2015-2017 ROUSHCHARGED 5. In today&39;s video we are diagnosing a 2014 Chevy Silverado with a cooling fan issue. Possible Causes of a Bad Cooling Fan Relay. kf Back. Jun 16, 2020 Premium parts you can rely on Designed to keep your AC system in top shape. Belt driven fans were prevalent for a very long time. loss of airflow andor engine cooling fans running continuously from high ac pressures. When the temperature reaches about 223-degrees F (value depends on makemodelengine), the PCM will command the cooling fan relay to turn on the fan. Joined Jul 19, 2018. Engine compartment, with 2. Open the fuse block and inspect the cooling fan relay fuses. They supply constant voltage, protect against voltage and amperage spikes, and prevent the fan from back-feeding voltage through your vehicle&x27;s wire harnesses. They don&x27;t recommend towing over 10,000lbs with their electric fans. Instrument Panel Fuse Block (Right) diagram. Fan speed does not increase when engine is hot. I need to replace it but cant find the. RADIATOR COOLING FAN RELAY LOCATION AND REPLACEMENT FORD FOCUS MK3 2012 2013 2014 2015 2016 2017 2018In this video we will show you how to replace the relay. passenger side with pwr rear slider. Free shipping. The cost of diagnosing the P0480 CHEVROLET code is 1. The average ignition relay replacement cost is between 15 and 100, depending on the car model and labor costs. Replaced the temperature sending unit. The temp then rises to 210 gradually and stays there. 0 helpful. de 2020. 0 It has an E78 ECU, and the option to control fans in the calibration. CJM68GT390 said From a purely analytical point of view, the temperature sensor should be in the bottom of the radiator (the outlet) so it knows when the coolant is not being cooled by the air flow. 63 - 28. To open it, push the tab on each side and remove the lid.  &0183;&32;Chevrolet Suburban (2015 2016) fuse box diagram Year of production 2015, 2016 Underhood Fuse Block The underhood fuse block is located in the engine compartment, on the drivers side of the vehicle. Engine compartment. To access the back of the fuse block 1.  &0183;&32;The engine compartment fuse block is in the engine compartment, on the driver side of the vehicle. The only code you can count on is the CURRENT code, B2471 Interior Lamp Fault. Discussion Starter &183; 1 &183; Jan 7, 2021. Looking for an ECU pinout to control the fan relays. The old relay setup through the box was damaged in the junction box. 7 radiator) mounted forward of the engine, but behind the other heat exchangers (secondary Ford 6. Jun 29, 2015 This damage could cause the blower motor to stop working, or to actually stick on and never shut off. The left fan motor seeks ground though the sp relay contacts and then flows through right motor to ground. Without eassist. 0 hour of labor. I need to replace it but cant find the part anywhere. Engine compartment Advertisements Fuse box diagrams Engine compartment Assignment of the fuses in the engine compartment fuse box. The most common causes that hinders normal operation of air conditioning system on your Chevy Silverado 1500 are dirty cabin air filter, refrigerant leak, dirty or clogged condenser, dirty or clogged evaporator, bad blower motor, defective compressor, faulty blend door actuator or any fault in the electrical system. Different brands and car manufacturers have different ways of placing the coolant temperature sensor depending on the car design. Chevrolet Silverado I is a full-size pickup truck that was first introduced in the late 90s. malibu fan chevy cooling ac 2003 4l 2008 low temp rmldaytona. de 2019. Suburban 3500hd. The engine coolant sensor or a separate engine temperature switch, is used to monitor engine temperature. With all of that, there&x27;s variability. Figure 10. Coolant pump F55. Belt driven fans were prevalent for a very long time. 2004 Chevrolet Silverado 1500 Owner&x27;s Manual. Decals & Emblems ;. 19209792. Auto Genius. I would recommend to check for codes in the computer as the computer controls the cooling fans on this vehicle. SAVE UP TO 25 See all eligible items and terms. Coolant Temperature Sensor Location The engine coolant temperature sensor is usually located on the engine block or cylinder head. When the AC is turned on, the fan moves air across the AC condenser, thereby removing heat from the refrigerant, which changes from a vapor to a liquid. Poor Engine performance. If this starts the fan, the sensor is faulty and will need to be replaced. Radiator Fan stays on. Run your finger along the edges of the bearing seal on the backside of the fan clutch. 48 Free shipping 2014-2016 Chevrolet Silverado 1500 Electric Cooling Fan Assembly 129K Miles OEM Sponsored 196. 30 Add to Cart 3. FAN 1 Cooling Fan 1 TRANS PUMP Auxiliary Transmission Fluid Pump FAN 2 Cooling Fan 2 CAB HTR PMP Cab Heater Pump Relays CAB HTR PUMP Cabin Heater Pump COOL PUMP Coolant Pump FAN LOW Cooling Fan Low Speed Relay FAN MID 1 Cooling Fan Mid 1 FAN HI Cooling Fan High Speed Relay FAN MID 2 Cooling Fan Mid 2 FAN CNTRL Cooling Fan. Engine Compartment Fuse Block. The most recently reported issues are listed below. Location of cooling fan relay - I have a 2011 chevy impala and trying to locate the radiator cooling fan relay. FAN 1 Cooling Fan 1 TRANS PUMP Auxiliary Transmission Fluid Pump FAN 2 Cooling Fan 2 CAB HTR PMP Cab Heater Pump Relays CAB HTR PUMP Cabin Heater Pump COOL PUMP Coolant Pump FAN LOW Cooling Fan Low Speed Relay FAN MID 1 Cooling Fan Mid 1 FAN HI Cooling Fan High Speed Relay FAN MID 2 Cooling Fan Mid 2 FAN CNTRL Cooling Fan. michael henney. Cooling fan relays can stop working for any number of reasons. High speed radiator fan ground control relay circuit. with 32 Volt 10 amp. The fan and AC symptoms are expected when the computer senses a problem that could be incorrect coolant temp readings because it doesn&39;t know if it&39;s a bad sensor or not and that is effectively a limp mode to ensure the engine doesn&39;t overheat if the sensor is sending bad data. Engine compartment, micro2, 20 amp. 2016 Chevrolet Silverado 1500 Change Vehicle. This system is similar to those found on most other vehicles. with 32 Volt 10 amp. Discuss it at Forum. 2003 Malibu 2. I found the wiring diagram for the cooling fan circuit online (through my library&x27;s online resources). Looking to add electric fans to a Silverado HD 6. The auto repair&x27;s diagnosis time and labor rates vary by location, vehicle&x27;s make and model, and even your engine type. On the cover you can see the various fuses and relays that are located in the fuse center. Engine compartment. Find our best fitting relay - radiator cooling fan motors for your vehicle and enjoy free next day delivery or same day pickup at a store near you Menu. The fan doesn&x27;t seem to be running while the engine is still running, but it comes on if you shut the engine off. RADIATOR COOLING FAN RELAY LOCATION AND REPLACEMENT FORD FOCUS MK3 2012 2013 2014 2015 2016 2017 2018In this video we will show you how to replace the relay. It incorporates a large radiator (the primary Ford 6. Ground pin 86 and check for voltage coming out of pin 87. SAVE UP TO 25 See all eligible items and terms. As you know, fan clutch engagement is a function of the temperature of the air through the stack (which means outside plus heat from the stack), engine speed, and time (it&x27;s a little slow to engage, then a little slow to disengage). Inspect for severe corrosion of all contacts and the power bar prior to having problems. In three wire coolant temperature sensors, the ECU. Look for Fan Relay 45 in the underhood relay box. The fan relay is often located in the engine compartment fuse box, but the best way is to check your repair manual to find out where it is located. Pick Up In-Store. Electric Radiator fans do not come on when engine is hot nor after turning off, will only come on when AC is turned on. This video covers the part that needs to be replaced when your GM vehicle marks no engine temperature on the dashboard. The problem is your fan has 2 speeds and low speed should turn on and stay on as soon as you start your engine with AC on. Asked by almazanmike Apr 30, 2020 at 0741 PM about the 2016 Chevrolet Silverado 1500 LT 4WD. How to repair, install, fix, change or replace a broken radiator dual fan assembly. and it worked fine. Escalade ESV. In an internal combustion car&x27;s engine, the cylinder head is placed on the top of the car&x27;s cylinders above the cylinder block. Common causes for relays failing to operate might be Failure of the computer, temperature switch, or relay control module that turns the relay on or off. The ACDelco 13592144 is a genuine replacement, with the fit of an Original Equipment part. 63 Free shipping New Cooling Fan Assembly Chevy Avalanche Suburban Yukon Silverado 1500 GM3115212 139. If it doesn&x27;t spin, or it spins with a lot of trouble, then the problem is probably the fan motor that is inside. Fit Infiniti Q50Q60 3. Select a store to see pricing & availability. also felt the click once it was connected to the battery. This problem existed before and after the radiator was replaced. Trailer battery. You will gain some rwhp, but keep in mind that the stock fan clutch assembly delivers 10,000 cfm A. 54 Free shipping. Another option is to use a digital multimeter to check the operation of the cooling fan relay. Cooling fan clutch. Log In My Account sv. If the fan spins, then the fan is ok. Make sure you orient the wires the same way as in the pic. pm; wm. If they don&x27;t work replace. 59 386. Category GM. Replaced the temperature sending unit. Jun 16, 2020 Premium parts you can rely on Designed to keep your AC system in top shape. Instrument Panel Fuse Block (Left). Diagram 7 wire trailer harnesswiring. 8 litre. The only way to get the fans to shut down is to either 1) turn the AC off completely or 2) turn the truck off. The relays may be mounted above the rear curve of the driver side inner fender where rust holes commonly develop. Auto Genius. Symptoms You may experience if Your cooling fan relay is going bad include overheating of the engine, fans no longer run. A mechanic stated that the fan clutch needed to be replaced. Check the ECT gauge connector and wiring for damage. The auto repair labor rates vary by location, your vehicle&39;s make and model, and even your engine type. 70 Amp Fuse, 40 Amp Relays, Temperature Range 205 On190 Off, Kit. K02 Starter. As soon as I turn the air off, the fans will shut off about 10 seconds later and stay off. Used Chrysler 300. Open the fuse block and inspect the cooling fan relay fuses. Make sure your system is properly purged and has no leaks. The situation when the car radiator cooling fan keeps running constantly can be caused mostly by a failing coolant temperature sensor or its wiring, broken fan start relay, damage to the electrical wires, and electronic engine control unit (ECU) problems. Yukon XL. You can check this by accessing the panel behind the fuse box, and looking for the resistor module. Tahoe, Yukon, Escalade. 2017 GMC Canyon Denali CCLB 4x4. 29 de abr. 20 off orders over 100 Free Ground Shipping. First fan hits in only when idling a while. 42 Cooling Fan Clutch 43 Engine 44 Fuel Injectors A, Odd 45 Fuel Injectors B, Even. It is often installed on a plastic hose on the coolants inlet. Figure 9. 48 Free shipping 2014-2016 Chevrolet Silverado 1500 Electric Cooling Fan Assembly 129K Miles OEM Sponsored 196. Discussion Starter 1 Aug 17, 2019. Yukon XL. Engine compartment. 2016 Chevrolet Silverado 1500 Change Vehicle. blue beetle showtimes near starlight west grove cinemas, gpa calculator university of utah

98 179. . 2016 silverado cooling fan relay location

Here you will find fuse box diagrams of Chevrolet Silverado 2019, 2020, 2021, and 2022, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay. . 2016 silverado cooling fan relay location ocarina of time grottos

May 19, 2016 The engine compartment fuse block is in the engine compartment, on the driver side of the vehicle. 59 Chemicals, Oil & Wash Performance APPLY CHANGES Auto Parts Cooling, Heating and Climate Control Engine Cooling Chevrolet Silverado 1500 Radiator Cooling Fan Motor Relay Buy Online. Remedy that worked for my &x27;14 Silverado 4x4 LTZ. Tahoe, Yukon, Escalade. gadd - Edith L. The defective Cooling Fan Relay is removed from the relay box by pulling straight up and out of the connection. Jun 29, 2022 The signal controls the position of the oil control valve inside the cooling fan clutch housing. Issues with the cooling fan, cooling fan relay, or fan circuit can cause code P0480. Asked by almazanmike Apr 30, 2020 at 0741 PM about the 2016 Chevrolet Silverado 1500 LT 4WD. SAVE UP TO 25 See all eligible items and terms. Check which type of refrigerant your vehicle uses. Davies Craig dual radiator fan controller is designed to operate two electric radiator fans. Once you locate the resistor module, inspect the metal connector. This energizes the cooling fan sp relay coil, closes the relay contacts, and provides a ground path for the left cooling fan. 0 hour of labor. Support Home; Vehicle Support; OnStar and Connected Services. 98 98.  &0183;&32;Location of cooling fan relay. Free shipping. K02 Starter. 4,875 Posts. Cooling Fan Stays On. one fan turning onoff is perfectly normal. 2016 Chevrolet Silverado 2500 HD. Engine compartment. Whether you have a physical fan speed switch or the dual climate feature in your Silverado, there is a button or switch that is dedicated to start or speed change of the blower for the AC or heater. Instrument Panel Fuse Block (Left).  &0183;&32;The best part is, our Chevrolet Silverado 1500 Engine Cooling Fan Controller products start from as little as 20. 34 listings starting at 9,990. Our Chevy Silverado 1500 parts are built to last, so you can keep your Chevy Silverado 1500 running in fine shape. 7L turbo, 40 amp-5 terminal. I already replace the temperature. Found a mistake Let us know Do you like StartMyCar Follow us on Facebook. 10 amp. Look for Fan Relay 45 in the underhood relay box. I'm getting a recurring p0128 code on my 06 silverado and the truck has been registering colder on the gauge than normal. 45 219. 3 I need the entire relay box for the cooling fans. Cooling Fan ; Cooling System. Ginko Posted on Dec 15, 2011 Helpful 4 Not Helpful 1 Comment Flag Anonymous Nov 24, 2019 where is this box at under the hood i have looked everywhere Add Your Answer Video Photos Add Upload Upload an image from your computer Uploading 0. No help from dealer or GM. The 2014 Chevy Silverado cooling fan relay is located in the engine compartment which is on the right-hand (driver) side under the hood. 4 &183; Sep 18, 2021. If you haven&x27;t driven the car much. Check which type of refrigerant your vehicle uses.  &0183;&32;The best part is, our Chevrolet Silverado 1500 Engine Cooling Fan Controller products start from as little as 20. (coolant temperature sensor) located near the thermostat. I already replace the temperature. by Ed Ruelas on. Coolant pump F55. 7 Jun 16, 2015. MSRP 137. Remove the relay and supply 12 volts to pins 30 and 85. PCM on and switch off - PCM activates new relay which in turn activates fan relay PCM isolated by new relay. SAVE UP TO 25 See all eligible items and terms. Joined Jul 19, 2018. 5 with 52k on the clock. The fan doesn&x27;t seem to be running while the engine is still running, but it comes on if you shut the engine off. Engine compartment. 2016 - 73 CKT 92. A magnifying glass. - FAN CNTRL Relay - Cooling Fan Control - FAN HI Relay - Cooling Fan - Right - FAN LO Relay - Cooling Fan - Left - FOG LAMP Relay - FOG LAMP Fuse. 2009 - 2014 Ford F150 - Engine cooling fan goes full blast after 5 minutes of driving - I have a 2013 Ecoboost 3. The cooling fan motor gets three speeds based on a set of relays and 3 separate control wires. Check the fuses- a 10 amp fuse in the under hood fuse box is for the clutch--after it goes through a relay. The 2016 Chevrolet Silverado has 3 different fuse boxes. 70 Amp Fuse, 40 Amp Relays, Temperature Range 205 On190 Off, Kit. Yukon XL. I have replaced the steering rack, water pump, harmonic balancer, and rewired the cooling fan with new external relays and larger wire. The reason being, on most vehicles, is that the cooling fan doubles as a condenser fan. Electric Radiator fans do not come on when engine is hot nor after turning off, will only come on when AC is turned on. The PCM (powertrain control module) senses the increase in engine temperature through the CTS (coolant temperature sensor) located near the thermostat. Cooling fan relays can stop working for any number of reasons. RockAuto ships auto parts and body parts from over 300 manufacturers to customers&39; doors worldwide, all at warehouse prices. 150,000 MILES. If the fan is not working even when the car is overheating, there might be a wiring issue or a bad connection. &x27;99 Chevrolet Silverado Classic Z71 4x4 - K&N IntakeGibson. 63 - 28. Remedy that worked for my &x27;14 Silverado 4x4 LTZ. Possible Causes of a Bad Cooling Fan Relay. michael henney. Download 2007-2009 Chevrolet Silverado and. When Ac Off They. So, a engine cooling fan, relay or control circuit failure is bad news. FAN CNTRL Relay - Cooling Fan Control. Took it to car washoil change place, told them the problem. I already replace the temperature. Product Features Direct replacement for a proper fit every time. 8 de jan. Chevrolet Silverado mk3 fuse box engine compartment. 2016 2005 Chevrolet Silverado 2500HD 2WD. Then is blows super cold all day. I have had a lot of people ask me about GM Radiator cooling fan diagnosis in the past. If the fan doesn't come on, we need to continue with the relay and it's wiring. and it worked fine. 76 Add to Cart 4 Driver Side Instrument Panel Wiring Harness Junction Block 23459422 Fuse & Relay Box, Left. Chevy Silverado 1500 2500 HD 3500 HD 2016, Ambient Air Temperature Sensor by WVE. Turn on the AC and set it to the coldest setting, and the fan speed to maximum. This system is similar to those found on most other vehicles. with 32 Volt 10 amp. Show items 30; 60; 90;. High speed cooling fan, rear defogger and HVAC high speed blower operation can cause . Guy said he had that before. This video covers the part that needs to be replaced when your GM vehicle marks no engine temperature on the dashboard. Jetta L5-2. MSRP 19. The theremostat is working, coolent is fine. There's an AC compressor clutch relay which is 44 in the same relay block which is powered by 10A AC fuse 30. Honda CR-V Fuse box diagram (fuse layout), location, and assignment of fuses and relays for the 2012-2016 Mk4 (RM1, RM3, RM4). Chevy Silverado 1500 2500 HD 3500 HD 2016, Ambient Air Temperature Sensor by WVE. The fan will shut OFF if the temperature or pressure drops below the predetermined value, but will only operate for 2 minutes, regardless of the coolant. I then pulled the other grey one (Cooling Fan 2) and put it in to where the other was just pulled and the fans started up again. I have an 05 silverado 1500 5. Before the mods i did some radhose temp measurements and searched the sensor accordingly. Fan speed does not increase until engine is excessively hot. Jun 29, 2022 The signal controls the position of the oil control valve inside the cooling fan clutch housing. The engine coolant sensor or a separate engine temperature switch, is used to monitor engine temperature. 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