ChicagoGSX
20+ Year Contributor
- 504
- 0
- Nov 6, 2002
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Glenview_IL
On the way home my CEL came on and I checked it my pocketlogger which shows it as being Insufficient Coolant Temp. for Closed Loop Fuel Control. I know the thermostat is good because the car warms up quickly. I searched and it seems some people said that it could be the front O2 sensor, which would make sense because for the past month my gas mileage has been pretty bad (14-16 mpg). Anyone know any other causes?