I have recently noticed that my Audi 80 is experiencing fluctuations in RPM while idling and driving. This is causing the engine to feel unsteady and there is also a slight decrease in power. What could be causing this issue and how can I fix it?
ReplyOne common issue that can cause RPM fluctuations in an Audi 80 is a dirty or faulty mass air flow sensor. I would recommend cleaning or replacing it to see if it improves the issue.
Another possible cause could be a vacuum leak, which can throw off the air-fuel mixture and cause the RPM to fluctuate. I suggest checking all the vacuum hoses and connections for any leaks and repairing or replacing as necessary.
A faulty idle control valve could also be the culprit. If it is not able to regulate the idle speed properly, it can lead to RPM fluctuations. Consider checking and cleaning the valve or replacing it if needed.
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