2009 Malibu 2.4 ecotec. It has intermittent rough idle, missing at highway speed. So far have replaced plugs,Fuel rail flush, MAF sensor. Replaced cam shaft position sensors and actuators (was getting MIL CODE for the cam shaft) Light went out after changing cam sensors. After all this the car still runs like shit. Any ideas?

Asked by Dennisv May 26, 2013 at 08:05 PM about the Chevrolet Malibu

Question type: Maintenance & Repair

2 Answers
19,025

Jason answered 10 years ago

ignition module and sparkplug wires would be the next items.

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5,305

Jon answered 10 years ago

Have you verified the fuel system is up to par? Pressure and volume?

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