Q: Idles rough after warm up.

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Starts and runs fine. No warning lights are on. Ignition coil and spark plugs changed. Read that it might be the VVT solenoid but wanted to ask before I change it. Engine r56 n14

My car has 70000 miles.
My car has a manual transmission.

Hi there, thanks for writing in. In most situations when the variable valve timing solenoid is damaged or causing an ignition problem, it will trigger an OBD-II code and thus illuminate the check engine light. If the warning light is not coming on, it’s most likely mechanical in nature - such as because of a clogged or dirty throttle body, fuel injector, or air filter that might be causing this problem. I recommend cleaning those components or contacting one of our local mechanics who can come to your home or office to complete this service for you.

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