strange clicking/banging sound from motor

[long tall eta]

can't figure this one out. while polishing the wheels the other day i had the car off but the ignition on and listening to the radio. out of nowhere a loud clicking/banging soung starts under the hood. i've heard this before while driving and was advised on the forums that it was the door actuator. i popped the hood and it was definitly coming from the front of the motor area down low. it lasted about 10 or 15 seconds and stopped. what would make a loud noise like this in the front of the engine bay w/ ingnition on but car off? i have bin hearing this maybe 4 or 5 times a year but stopped looking when i was advised it was the door actuator. what the hell could it be??

[YeOldeBuggy]

Perhaps the clutch for the compressor is horribly worn, and engaging/disengaging for some reason?

Thad.

[schtozo]

A mouse trapped in cylinder 1 or 6 begging for mercy??!LOl
When ignition is on the ICV tends to do a noise but deffintly not loud enough to be heard in the cabin. I would check that though.