temp guage wire question

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Jan 19, 2006 | 11:42 AM

d10pins

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From: Florida

Car: 1989 Iroc-Z

Engine: 5.7L

Transmission: T-56

Axle/Gears: 3.70

temp guage wire question

i have an 89 iroc. should there be any volts to the temp wire on the drivers side head, with the ign on??
thanks
darin

Jan 19, 2006 | 12:56 PM

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If you meter the wire while it is unplugged from the sensor, you should get something close to 12VDC. I'm not certain of the internal resistance of the gauge, so I can't guess what the voltage would be with the sensor connected at any given temperature.