Question about Cars & Trucks
I cannot locate the temp. sensor which is supposedly bad on my car.
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
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Posted on Jan 02, 2017
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
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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