Why does computer have to be reset daily?

Asked by drhook1111 Jul 18, 2020 at 02:02 PM about the 2015 Chevrolet Cruze Eco Sedan FWD

Question type: Maintenance & Repair

After driving car approx 10 mins, temp gauge in car goes to C and doesn't register any temp. AC stops working at the same time. Replaced both temp sensors and everything worked for a day. Same thing happened. Removed negative battery cable and reinstalled and everything worked the rest of day, but this is an everyday occurrence. Seems I have to reset computer everyday. Why and how can this be remedied? The car is not overheating.

2 Answers
157,225

James answered 4 years ago

This sounds like a problem with the wiring going to the coolant temperature sensor. Is your check engine light or service engine soon light on? If so I bet there's a trouble code for the coolant temperature sensor in the computer (PCM). If the coolant temperature sensor is unplugged or disconnected the temperature gauge will stay on C, the air conditioning will be disabled, and the radiator cooling fans will run on high speed. As a safety precaution the PCM assumes the engine is overheating if it is not receiving any signal from the coolant temperature sensor. Hope that helps! Jim

Mark helpful
157,225

James answered 4 years ago

One other thing, GMs don't like aftermarket coolant temperature sensors. Replace with a Delco sensor. Hope that helps! Jim

Mark helpful

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