Question about 2002 Chevrolet Monte Carlo

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My check engine light just came on and the car is seemingly running fine, what could be the reason or the most common reason?

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  • big_biz_mich Dec 30, 2010

    Also the coolant is leaking at the intake manifold and I have notice the coolant light coming on, I have been adding coolant, not much but now I can see where it is leaking from and this is going to cost a few dollars to fix, mostly labor though..Other than that it runs fine, I have been getting bad gas mileage though and the gas gauge fluctuates, Can anyone tell me why?

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The most common reason for the check engine light to come on is the Oxygen Sensor. Take the car to a garage and have the engine fault codes checked.

Posted on Dec 30, 2010

Testimonial: "It just took it to my mechanic and he put it on the machine and it is a coolant leak from the intake manifold..Got to replace the gasket..Ouch"

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