Quote:
Originally Posted by DCM
yes, running. It could be your alternator, if it is struggling under load, but you can also get a load test done on the 12V too. The revs should drop when you put a heavy electrical drain (lights etc) or mechanical drain (air con) but the ecu should pick up the drop in revs and compensate........
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Agreed, on our old Focus the revs would drop for an instant, then pick up as the car increased them to cope.
G