A\C Vibration

[ctennyson]

Hello Touareg Friends

I have a 2012 Tdi Lux Touareg and just recently the car started to vibrating when running the AC in hot weather most noticeable when stopped at a red light.
It vibrates for a second every 8-12 seconds. When I turn off the AC the issue goes away.
I have no idea where and why this issue is coming from, possible dirty fuel, fuel filter, glow plugs. I also posted over on Club Touareg but didn't get much response. I do not receive any CEL !

Any ideas as to where to investigate would be great !
Thanks
Colin

 

[mannytranny]

I'd guess something awry with the AC compressor.

 

[oilhammer]

Or the crank pulley is trying to come apart.

 

[ctennyson]

would i be able to wiggle that with my hands to see if it loose ?

 

[mannytranny]

I'd idle the engine and get a visual on the belt system then turn on the AC, get the vibration going then reexamine the belts.

 

[ctennyson]

Checked out all the pullies and found no play what so ever ! This is a weird one !