ECT sensor ref. sig. voltage is 2.5 volts - Team Camaro Tech
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post #1 of 3 (permalink) Old Jan 26th, 09, 03:37 PM Thread Starter
 
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ECT sensor ref. sig. voltage is 2.5 volts

I have a 95 Z28 with the 5.7L engine. The temperature gauge has been reading below 185 degrees F, which seems low to me. So in doing resistance checks, I decided to check the reference voltage that my book say's should be about 5 volts. It was only 2.49 volts. What would cause this, and how do I fix it?

Last edited by ManRam99; Jan 26th, 09 at 05:04 PM.
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post #2 of 3 (permalink) Old Jan 26th, 09, 04:31 PM
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bill
 
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Re: ECT sensor ref. sig. voltage is 2.5 volts

do you have a code for low or high voltage. in mitchell voltage should be 1.5 -2.5 volts. if your take sensor out and measure resistance it should go up or down as you heat it up.
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post #3 of 3 (permalink) Old Jan 26th, 09, 05:07 PM Thread Starter
 
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Re: ECT sensor ref. sig. voltage is 2.5 volts

Whoops, the gauge was reading 185 degrees. Haynes says about 5 volts. I think it may be working correctly. Resistance does change.
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