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Wrenchtech, ASE Certified Technician
Category: Chevy
Satisfied Customers: 1403
Experience:  40 years experience with ASE certification as Master Technician with L1--Repair Shop Owner
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2004 chevy malibu: ive got a check engine light..acceleration..liter

Resolved Question:

ive got a check engine light with rough idle and acceleration in both drive and reverse on a 2004 chevy malibu/Classic with the 2.2 liter 4 clinder engine what might be the cause of this?
Submitted: 8 years ago.
Category: Chevy
Expert:  Wrenchtech replied 8 years ago.
The "check engine" light is an indicator for a system that monitors many electronic functions in the system, also called the "malfunction indicator lamp" (MIL). It can come on for any of hundreds of different causes from any of the systems that the computer monitors. Some are very important and can lead to further component or engine damage and some are emissions related not as serious but still a problem and need to be repaired.

Your first step is to have the computer scanned to retrieve the trouble codes that were set when the check engine light came on. Those codes will give you specific information about what the computer saw and will get you pointed in the right direction to find your problem. With a 1996 or newer and some 95 cars and you have an AutoZone or Advanced auto parts in your area, they will read them for free. Once you have these code numbers, we can be a lot more specific about what your problem may be.
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