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Temp & Fuel Gauge Indications 200 1980

posted by  someone claiming to be Paul on  Tue Feb 8 09:10 CST 2005 [RELATED]

Anyone know why all of a sudden the temperature gauge and fuel gauge would almost peg out at the same time (temp to hot and fuel to full)?

Thanks








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Temp & Fuel Gauge Indications 200 1980

uid 18083's pic
posted by  lucid on  Tue Feb 8 09:44 CST 2005
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last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

Possibly a failed Voltage Regulator on the back of the instrument cluster.

It's a small rectangular "can" the furnishes a regulated 10.0 volts for those 2 instruments
--
Bruce Young
'93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.








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Temp & Fuel Gauge Indications 200 1980

posted by  someone claiming to be Paul on  Tue Feb 8 14:25 CST 2005 [RELATED]

Bruce - thanks much for the tip, I'll take a look see.

Paul








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Temp & Fuel Gauge Indications 200 1980

posted by  sf nathan on  Tue Feb 8 09:31 CST 2005
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On our 86' 240gl wagon the temp. guage reads full hot with the head lights on. Turning the switch off for a few seconds usualy brings the guage down to normal, and will stay normal when the lights are turned back on for a while. I never investigated why this is.

Could your guages be triggered by something else?







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