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Yes, I would suspect a bad T stat if it can't maintain normal temp on the gauge. Either that or your electric fan is running all the time.

Rick

I'm a retired ASE Master/L-1 Technician. I still keep current with the latest automotive technology. Visit my blog for cool articles and TSB's: http://free-auto-repair-advice.blogspot.com

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โˆ™ 2007-08-29 01:20:36
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Q: Is your new thermostat defective if the temperature comes up to normal but drops after driving short way or with the heater on on cold day in a 1999 Dodge Caravan?
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