A/C clutch or whole compressor?

[clickman]

I've got a thrumming (about 2 per second) coming from the engine compartment. It only seems to show up when the engine is warm.

When I took all the access panels off, I found the noise coming from the A/C clutch or compressor. The snowflake was on, and when I turned it off, the thrumming mostly went away, but was still there faintly.

Is this just the clutch, or is the entire compressor toast?

If it is the clutch, can it be replaced without pulling the compressor? (My Bentley manual doesn't cover that.)

Will Porsche sell just the clutch?

Thanks.

Norm

2001 Boxster 2.7, 5 speed, Canada

Edited May 21, 2009 by clickman

[RFM]

Sounds more like a bearing failure or some play inside the compressor than a defective clutch, i would replace the compressor + receiver/dryer and cleaning the entire AC system as well. A visit to a specialised AC workshop is recommended for a confirmation.

[clickman]

Well I just found out the local stealer wants $2100 Can for the compressor, not to mention the labour.

Any chance it could just be the serpentine belt getting worn out?

signed, Praying North of the 49th

[wvicary]

Some noises are elusive to locate, best take it to the dealer or a good indy garage for a second opinion. It's just not cost effective to start throwing parts at these vehicles and hope you guess right. There are many rollers and other components in the belt area that could cause the noise.

[clickman]

i would replace the compressor + receiver/dryer and cleaning the entire AC system

Why the reciever/dryer too?

Why the cleaning?

Thanks

[RFM]

Possible internal compressor damage caused metal flakes in to the system, without cleaning and a new receiver/dryer the new compressor can be damaged again in a short period of time.