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2004 Over Heating

 
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Old 31 May 2015, 06:52 pm
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Default 2004 Over Heating

Hi! My wife's 2004 PT with 180,000 miles is over heating. It will idle for a few minutes, but as soon as the temperature gauge moves slightly, it indicates that it is over heating. She said the first time it did it, the guage went back down to about halfway, but the light stayed on. There is coolant in the radiator, and some in the reservoir (not sure if it's enough since I turn the engine off when it indicates it is over heating, i.e. before it has time to register on the reservoir full line). Is this just the thermostat? Where can I start investigating?
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Old 31 May 2015, 07:14 pm
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Default Re: 2004 Over Heating

A lot of the overheating problems with the PT stem from the radiator fan malfunctioning. Can you tell if the the fan is running?
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Old 31 May 2015, 08:06 pm
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Default Re: 2004 Over Heating

I just tried to see, but it didn't want to start and the guage went straight to overheating.
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Old 31 May 2015, 11:00 pm
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Default Re: 2004 Over Heating

Is your engine trouble light on? If so what is the engine trouble codes you are getting?
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Old 01 Jun 2015, 11:46 am
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Default Re: 2004 Over Heating

P0117: Engine Coolant Temperature (ECT) Circuit Low Input
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Old 01 Jun 2015, 07:44 pm
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Default Re: 2004 Over Heating

P0117 Engine Coolant Temperature Sensor Circuit Low

Possible causes
Low engine coolant level
Faulty Engine Coolant Temperature (ECT) sensor
Faulty engine coolant thermostat
Engine Coolant Temperature (ECT) sensor harness is open or shorted
Engine Coolant Temperature (ECT) sensor circuit poor electrical connection


If you know that your coolant level is fine I would suggest replacing the engine coolant temperature sensor but first check the wires going to the ECT. If the wires and contacts are okay replace the ECT.
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