I have a BMW 5 Series that has recently been experiencing a rough idle at start up. It seems to happen more frequently when the weather is cooler. What could be causing this issue and how can I fix it?
ReplyThe most common cause of a rough idle on a BMW 5 Series is a dirty or faulty idle control valve. Try cleaning it first and if that doesn't work, consider replacing it.
Another possible cause could be a vacuum leak in the intake system. Check all the hoses and connections for any cracks or leaks.
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