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Cadillac Repair/1998 Cadillac DeVille cooling system
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Question
I have a 1998 DeVille that is overheating after I have replaced the thermostat, radiator, and passenger side fan motor. The fans do not engage into high speed. I am getting a P0115, and P0722 code from my scanner. Which temp. coolant circuit is bad with a P0115 code, and is this what is causing the fans to not engage into high speed?
P0115 = Engine coolant temp to high. You need to test the COOLANT TEMP SENSOR (CTS) on the engine.
P0722 = no such code.
You need to test the CTS via the CLIMATE CONTROL PANEL diagnostics program built into the vehicles system.
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On hands professional expertise in all aspects of Cadillac diagnostics and repair mid 1970`s thru 2000 year vehicles. GM certified in electronic fuel injection, Automatic transmission, Heating and A/C, and onboard vehicle computer diagnostics.
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Held over 15 GM certifications prior to retirement in 1989.
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Prior to retirement held several ASE certifications, numerous Factory certifications.
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