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Re: Coolant Temp. gage trouble 200 1987

posted by  someone claiming to be Randy Starkie on  Sat Dec 1 15:44 CST 2001 [RELATED]

The compensation board in the instrument cluster can sometimes produce this effect- intermittant temperature readings. Actually the board isn't even necessary to gauge function, it just smooths out the operation and knocks the temperory high and low readings down. Sometimes removing the board, cleaning the contacts and refitting it will fix it while some people just remove them and solder a jumper to restore function of the gauge.

Getting to the board requires removing the instrument cluster from the car. If you want the procedure for running without a compensation board email me for the text file.

BTW if your truck is a Ford there is a nice site for help at:

http://www.ford-trucks.com/ (link below)

Randy





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