What is causing the rough idle?

What is your question?

Vibrates and feels like it will stall when idling in drive. Sounds like a diesel.

What makes this problem better or worse?

Nothing. Starts up after driving a few miles

How long has your 2014 Chevrolet Sonic had this problem?

A few weeks

Liz20 in Lake Charles LA

Sep 26, 2017

1 Reply

Popular Answer

casey40510on Sep 30, 2017

Hello, This could be as simple as the fuel being contaminated with water or excessively complicated. The first step is to scan the engine for trouble codes. If the engine is running this roughly, there should be a few there. I would expect to see P0300, P0301, P0302, P0303 and P0304. That just means you are having misfires. What will help us understand why you are having misfires is any other code that is stored. The other side is that you may not be having misfires at all, and that would be strange but conceivable.

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