I've noticed that my Audi A4's engine seems to struggle when I first start it up in the morning. It idles rough and makes a strange noise. Is this normal or is there something wrong with my car?
ReplyIt is not normal for your Audi A4 to have a rough idle when cold. This could be caused by a few different issues, such as a dirty air filter or spark plugs, a vacuum leak, or a faulty oxygen sensor.
I've had the same issue with my Audi A4 before. It turned out that the idle control valve needed to be cleaned. Once I did that, the rough idle went away.
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