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Can I substitute a mechanical temp gauge? 200 1986

Can I substitute a mechanical temp gauge in place of the erratic often times non-functioning dash gauge? I've traced and tracked & need to move on to other more important fix's. Simple question: All I need to know is if I can substitute a generic mechanical temp gauge in place of the Volvo equipment without some unforeseen problem.

Thanks a bunch.









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    Re: Can I substitute a mechanical temp gauge? 200 1986

    I faced the same problem 6 months ago. I was able to replace my temp compensation board, got it from Swedish Engineering for $38. My temp gauge now works great. I think replacing the board is easier and a better solution. The board is located behind the fuel/temp gauges. You must remove the back cover to get to it. Be sure to mark all wires before removing them so you can replace them correctly. I have been told you can fry your instrument cluster if you don't. Also be careful installing the board so you line up the small contacts without bending them. Swedish Engineering can probably walk you through the procedure if you need further help. I have also heard the Bentley manual has a good description, although I was able to do it without it.








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    Re: Can I substitute a mechanical temp gauge? 200 1986


    Before condeming the volvo gauge, there are a few things you should check.

    1. The wiring to the sending unit.

    2. The temp. compensating board that's on the inst. cluster. It plugs into

    back of the cluster.The contacts get dirty and the gauge act's up.

    Also check the FAQ section :

    http://brickboard.com/FAQ/700-900/EngineSensors1.shtml#Electrical: Engine Sensors, Etc








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      Re: Can I substitute a mechanical temp gauge? 200 1986

      Hi Roy,

      I've had the gauge panel out - can you tell me, or describe what the temp compensating board looks like on the '86 240?

      Thanks a ton.








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        Re: Can I substitute a mechanical temp gauge? 200 1986


















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