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Posted by Desoto61 [66.75.37.197] on Wednesday, March 10, 2010 at 23:02:54 :
In Reply to: Re: Water temp. gauge-What is best Mechanical or electrical? posted by Vaughn [99.14.88.183] on Wednesday, March 10, 2010 at 22:30:51 :
That could be an issue with something in your electrical system. An electrical gauge works on changing resistance in the sensor to change either voltage or current through the gauge. A problem with any part of the circuit will make the gauge read incorrectly.
Might want to test the voltage from the gauge to the sensor. If it changes when you speed up the engine the problem is with your electrical system somewhere.