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Investigating Running temperature lower than expected 200 1985

posted by  ricbelley on  Sat Dec 28 14:40 CST 2024
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last visit: Sat Jan 18 12:32 CST 2014
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Hi Art,

Thanks always for the details but I am looking at your old notes showing the analog temperature reader.
On the table next to the drawing you wrote that at 9:00 the resistance needed is 68 ohms.
In your reply you wrote: "The "test" of the gauge prescribed by Volvo is to substitute a 68 ohm resistor for the gauge sender and expect 3/4 deflection of the gauge. I think 100 ohms puts it right about center, what folks call 9:00."

Maybe you meant 40 ohms should bring the needle right at 3/4 needle travel?
And the 68 ohms is for midway travel i.e. flat at 9:00?

Hope I am not beating a dead horse but what would be a normal operating position for that needle? I thought it should go just below 9:00. About 8:45?

You know, I have been looking for 85 240 section 3 service manual. That would provide all electrical instruments info I need, and more.
I cannot seem to find a proper sourceor maybe I am not looking at the right place. Do you know how to get (buy) this manual?

Thank you again.

Richard






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