Heh,
My Air pump is making quite a racket on start up too. I unplugged a connector but it didn't seem to do anything. So I'm assuming it requires power to disengage the clutch? What is the purpose of the clutch? Does it disengage when the engine is warm? If someone could tell me that 12volts will disengage the clutch, it would really help me diagnose this noise. Thanks.
Darryl
'91 190

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'91 190E