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Thermostat question 200 1990

posted by  jwalker on  Fri Jan 17 05:32 CST 2003
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last visit: Fri Jun 6 08:39 CST 2014
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Perhaps someone on the board can help me diagnose this problem.

The previous 2 winters the heat in my car was terrific, I guess 240's are known for that.. This winter, there is heat but it is nowhere near as hot as it has been. Good heat is especially needed this winter in N.E.!!! It's been cold!!! Gauge reads lower than it should - around 7:30 not 9:00. The hose to the thermostat is relatively hot. Finally, the 2 hoses that run through the firewall to the heater core are a little warm, but I understand they are supposed to be quite hot.

Does this sound like a bum thermostat? The situation is complicated by the fact that my heater control valve is only partially effective - it does shut off but has only minimal adjustment capability. Not an issue in previous winters...

From what I understand, thermostats usually fail in a closed or open position - correct??? Could it have failed in a partially closed position?

I think it is the thermostat. Any thoughts???


TIA

Jim 90 244DL





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