[gregw]

I've got 2300 miles on my new 07 Classic CC. I've got a noise that I have noticed at both warm up and also while parked when the engine is at temperature.

I first noticed a "k-chunk" or "chunk" sound. It sounds to be coming from the passenger side of the engine compartment. When I first heard it, I thought someone was closing a door o a building about 30-40 yrads away.....the thump or k-chunk. I then realized that the sound was repeating itself literally every 30 seconds.

I then totally shut off the air unit at the dash. I was able to duplicate the k-chunk sound when I turned the air unit back on. It happened as soon as I turned it on. Is this a pressure slam inside the compressor lines? Is this normal and okay?

I can't make any correlation to outside temperatures or how hard the air unit is working.

Any ideas??????

 

[NCMIC]

several trucks are doing that. maybe bring it to the dealer to make sure the system is full and not overfilled or has any air in it. i will be bringing mine in as soon as i get back to NC. right now I don't need the AC. my lly made the same noises when it was overfilled.