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Temp gauge ohms?

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Old Apr 28, 2008 | 01:31 PM
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Default Temp gauge ohms?

What is the Ohm range for a stock GM temp guage sender?
I have a 1968. I've checked shop manual etc, cant find the info.
Thanks
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Old Apr 28, 2008 | 01:53 PM
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Originally Posted by j schwartz
What is the Ohm range for a stock GM temp guage sender?
I have a 1968. I've checked shop manual etc, cant find the info.
Thanks
220 degrees = 70 ohms
200 degrees = 90 ohms
180 degrees = 115 ohms
160 degrees = 140 ohms
120 degrees = 250 ohms
100 degrees = 340 ohms
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Old May 21, 2008 | 10:39 PM
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This is good information. I used the temp sending unit from my 71 on my crate motor and placed it in the intake manifold. However, the gauge doesn't move. It will if I ground the line. I'm wondering if I didn't put a large enough gauge wire to the sending unit. I also had to put a female spade terminal on the end of the wire to connect to the sending unit. Too much resistance? I'm pretty sure the sending unit is working. I can't remember why I know it's working. I tested it before I finished the wiring but don't remember how.
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