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Engine temp. sensor needs replaced

I cannot locate the temp. sensor which is supposedly bad on my car.

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1 Answer

You do not replace parts based on an assumption
or someone telling you something

You properly test a vehicles sensors/parts to determine
if they are working correctly

Have a repair shop do that

Posted on Jan 11, 2013


6 Suggested Answers

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Ford 460 Engine Temp sensor

looking at  the  front of  the engine, just to  the right and behind  the  distributor cap. You  will  see a  wire attached (push on).

Posted on Aug 24, 2008

  • 279 Answers

SOURCE: need to know location of coolant temp sensor in 2003 Impala

Need more info. I see from the location of your post that you have a 2002 Blazer. Do you mean a Trail Blazer? Chevy didn't make a Blazer in 2002. The ECT (engine coolant temperature sensor) is located on the driver's side, front of the engine. (on top) It is between the ECM (engine control module aka the engine computer) and the alternator. You will most likely need to remove the alternator and it's belt to obtain easy access to the sensor. If you need to remove the alternator for access, remember to disconnect the battery's negative terminal first. The sensor has a wiring harness with a connector mounted to the top of it. After you remove the electrical connector, the sensor will screw out using a deep socket and ratchet. You will loose some coolant (antifreeze) during the change, so make sure you have some DexCool antifreeze on hand.

Posted on Mar 04, 2009

  • 3640 Answers

SOURCE: 99 Chevy malibu 2.4L engine coolant temp sensor

its at the end of upper radiater hose at housing for thermostat.

Posted on Aug 28, 2009

  • 17970 Answers

SOURCE: where to replace coolant temp sensor for 1998 grand jeep cherokee

Check this image...

b33c4b0.png the Section ZJ-Secc-8D-Ignition-Systems (page 5, fig. 10 and 11).

Good luck.

Posted on Sep 07, 2009

  • 373 Answers

SOURCE: need to locate and replace coolant sensor

If you are refering to the coolant level sensor (causes low coolant light to turn on), it is located on the radiator near the battery on the passnger side. It is on the radiator tank, just below the radiator cap and the upper connection for the transmission line. Heres a picture of the sensor on my 2002 Impala when I removed the radiator (it's the square thing in the center of the picture):


Posted on Jul 14, 2010

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1 Answer

Idle problem (stalling) when car reaches full hot

There's a possibility that the ECT (engine coolant temp.) sensor isn't working the way it's supposed to. The engine may be at operating temp but the sensor may be telling the engine computer it's cold still and it'll act like an automatic choke on a carb. engine.

Mar 27, 2013 | 2001 Chevrolet Cavalier

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Replaced both knock sensors in 1999 silverado 5.3L. had computer re-programed for updated bulletin that was supposed to help engine knock and bring false knock codes from coming on. after a couple days,...

If the Knock sensor wire is located near the Ignition coil wiring the electro magnetic interference from the Ignition coil can rub off on the knock sensor wire causing the brain to think the knock sensor is sending a code.

You can place a millivolt meter across a knock sensor and tap it with a screwdriver and read voltage. If it doesn't read a voltage the sensor is bad. Its job is to generate a voltage.

Also, Using a timing light the distributor must be set to spec, if not this will trigger the knock sensor. Another trigger could be a bad temperature coolent sensor screwing with the fuel and timing, causing a knock. Some bad coolent temp sensors do not display a code when they're at fault, some simply slip under the radar. Usually when the temp sensor is bad the engine will not idle properly, or hesitates in most cases. The knock senser must have a good ground to the head or block, Do not use any thread tap or compound that would prevent a ground of the sensor.

Jun 04, 2010 | 1999 Chevrolet Silverado 1500

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Car overheats. i unplugged temp sensor and fans suddenly came on and coolant started to flow. hoses werent backed up any longer. so i replaced fan relays and car is still running hot

If you unplug the coolant temp sensor the computer will turn on the fans because it doesn't know how warm the engine is. The computer is working like it is suppose to. I think you might have a bad coolant temp sender. If it was a problem with the fans or the relays, they wouldn't come on when you unplug the sensor, because the problem would still be there.

Mar 28, 2010 | 2005 Chevrolet Monte Carlo

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2004 GMC Envoy check engine light remains illuminated. Diagnostics revealed codes: P1133 and P0128. P1133 points to a heated oxygen sensor and P0128 indicates a possible defective thermostat. The O2 sensor...

Leave 02 sensor alone ,it is doing it's job . It is heated up because of lean fuel mixture due to incorrect engine temp.,replace thermostat before looking further.

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Engine heat indicator flexuates, but engine

There is a coolant temperature sensor on the top engine block to measure the temperature. Either the connector is loosen or the temp sensor is bad. This sensor is bad will cause the gauge reading fluctuated. Locate the temp sensor and replace it to take care of the problem.

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Coolant temp sensor located on a 2004 dodge ram 1500 4.7


Jul 30, 2009 | 2004 Dodge Ram 1500

1 Answer

Temp Gauge Reads Hot all the time and i have heat

as soon as you turn it on after it has been shut off for how long? you could have a bad sensor. if you have a sohc (single overhead cam) engine you have a coolant temp sensor. if you have a dohc (double overhead cam) engine you have a cylinder head temp sensor. either way you will need to start with everything cooled off, drain the coolant, remove and replace the sensor. for the sohc engine you have to remove the ignition coil to get to the sensor, for the dohc you have to remove the alternator. in both engines you are supposed to torque the bolts that hold the sensor in place to 89 in-lbs, tight enough to not have a coolant leak at that point, and not so tight that you stretch the bolts or break them off in the block. if you still have a problem after you replace the sensor then you probably have a bad water pump. hope that helps.

May 26, 2009 | 2000 Ford Focus

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2001 hyundai suv malfunction indicator light stays on. was told I needed su5541 temp sensor, but can't find where it is supposed to go. wants to keep stalling.

Depending on which engine you have (4 cylinder or V6), these photos will help you locate your engine coolant temperature sensor/sender:

May 10, 2009 | 2001 Hyundai Santa Fe

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Coolant and temp sensor location

4.0 sometimes has one on left rear of cyl head Usually the front one does both ...goes to computer, then to fan relay then fan.

Apr 15, 2009 | 1999 Jeep Wrangler

1 Answer

Temp sensor needs to be replaced

this does not mean the sensor is defective, it most likely means the engine thermostat is stuck open and the engine is not running hot enough to satisfy the computers preset temp requirements for minimum eng operating temp.

Apr 08, 2009 | 2002 Daewoo Lanos

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