Help my 57 plate S3 is randomly revving at idle. Revs bounce and then shoot up when stationary. Car now has an emissions warning light. I've changed the PCV and N80(purge vent valve) but still happening. Any suggestions?
Welcome to the club mine has been doing it for weeks. Had new maf and pcv still the same and engine light has come on today. First thing to do is scan for codes I've got
Idle higher than expected hope yours is easier to fix than mine
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