Factory temp guage not working - Ford Powerstroke Diesel Forum
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Old 12-09-2012, 05:43 AM
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Factory temp guage not working

My factory temp gauge in my 05 doesn't work but every once in a while it will pop up but my cts shows fine.... but once the factory gauge works its high temps and cts flashes warning every once in a while just for few seconds.. so i change my temp sensor by thermostat housing. Is there any other sensor im missing? My other thought is bad wire or thermostat bad.
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Old 12-09-2012, 06:05 AM
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My fan is staying on while gauge not working i also have CEL light showing coolant temp low circuit

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Old 12-09-2012, 09:26 PM
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probably a break in one of the wires that's intermittently shorting out. you can loop the sensor connector. should peg the needle. if not, the circuit is at fault. check for continuity between the sensor and pcm. if no continuity, inspect the harness carefully. should be able to find the culprit
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Old 12-10-2012, 03:17 AM
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I found it. It was the temp sensor wires cut up and the plug on top of fan. The got into the fan just barely.
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