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  1. #1
    jim318is
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    Faulty temperature gauge.

    So my water temp. on the dash isnít really working. Sometimes it wonít work at all and other times it indicates the car being cold, like the needle will just hit the edge of the blue. This started awhile ago and be kind of rare for it to act up, but now its more frequent and will rarely work correctly.

    My idea is its an electrical connection. But where do I look first? At the dash behind the gauge? At the water temp sensor connection?

    Or is it the sensor itself?

    Any input would be greatly Appreciated!

  2. #2
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    Re: Faulty temperature gauge.

    How do you know the gauge is reading incorrectly? Do you have reason to believe that the engine is actually warming up to normal operating temperature, e.g. can you get heat in the cabin, does the radiator get hot to the touch? I ask because the most likely culprit for the symptoms you posted is a bad thermostat so that the engine is really not warming up and the gauge is correct. If the engine does seem to get hot, then I would first suspect the temp. sensor.
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  3. #3
    jim318is
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    Re: Faulty temperature gauge.

    I donít think itís the thermostat, because the radiator feels like its reaching normal operating temp and when Iím sitting in traffic the aux fan will kick on telling me its getting hot. And second, sometimes I will be driving and the gauge will be in the center like its suppose to then all of a sudden it will drop dead like I cut the power to it and then maybe shoot back up again or may just rise slightly.
    So I donít know if itís a bad connection somewhere or a bad sensor.

  4. #4
    Steve G
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    I had a similar problem after washing the engine.

    I pulled the connector off of the temp sensor and found it was wet inside. Drying out the connector and plugging it back in fixed the problem.

    On my 6 cyl engine there are two temp sensors underneath the intake manifold on the left side of the engine. The gauge is connected to the one closer to the rear of the engine. I think the location on your 4 cyl engine is similar.


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