Overactive AAV idle control w108 4.5
This engine has an Auxiliary Air Valve that is supposed to regulate idle speed, it higher idle when cold and lower when warm. Well, mine seems to be overactive, as the car idles way too fast when cold (1 minute after warmup it will be so high that the ECU will cut fuel, then it falls and gets fuel again, ecu cuts fuel, etc), but too slow when warm.
Is there anything I can do about this?
Thanks in advance.
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Csaba
1972 280SEL 4.5, silver
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