Question about 2002 Dodge Stratus

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Having over heating problemsand its idling high

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Could be a coolant sensor fault. If the sensor cannot detect the coolant temperature it cannot a) trigger the radiator fan to come on and b) cannot inform the ECU and so the ECU continues the fuel rich injection cycle that is used when the engine is cold and starting up and so the engine continues to idle fast during 'closed cycle'. Check the sensor connection and wiring. If all looks well probe the wires with a voltmeter (if it has 4 wires then the pairs that are diagonally opposed are usually part of the same sensor function). Measure the voltage when engine is cold and again when hot, there should be a difference. If not the sensor is fried and should be replaced. Have the DTCs read from the diagnostics, chances are that some of the codes P0115 -P0119 and P0125, P0126 are logged.

Posted on Apr 06, 2011

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