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Where is the location of the coolant temperature sensor for cooling fans on a 1999 Pontiac sunfire 2.2L?

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βˆ™ 2009-12-08 19:06:50

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Just behind the alternator, on the coolant pipe. It has a two wire connection, and is very easy to find and replace. Be sure to release pressure from system by loosening the cap or wait til the engine is cool. The engine ECM/cooling fan sensor is located on the driver side(rear end) of the engine, screwed into the housing that the radiator hose attaches to. It has two wires, brown and yellow, and has an oval shaped plug. If you unplug it with the engine running, then the cooling fan should kick on in about 8 to 10 seconds. If not then the fan motor needs replaced or the relay doesn't work and needs to be replaced. This relay is labeled and is located in the relay center on the driver side, next to the battery.

2009-12-08 19:06:50
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