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needle almost to red... 200

posted by  Jim Holst on  Fri Sep 20 11:45 CST 2002
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last visit: Tue Jan 4 11:05 CST 2011
[RELATED]

What year is your Volvo? About '85 or '86 ( I think) they started using a small circuit board called a "Temperature Compensating Board" as part of the temp guage circuit. This board plugs onto 4 pins on the instrument cluster board. With time and vibration the connections get loose or dirty and the temp guage starts acting up. Both my '88 and '86 have done this. The temp guage needle would run up to nearly the red and then sometimes come back down, and sometimes not read normal until the next time I ran the car. The next time the temp guage reads up near the red, try banging on the dash near the instrument cluster. If the needle drops down (slowly) the temp comp board is a prime suspect. If so, try a search of the archives for ways to fix this or see the Bentley manual. There's a way to bypass the temp comp board which I haven't tried yet.






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