The sampler on my 560 was acting just like yours - barely able to hold a single ply of tissue and wouldn't draw smoke, yet I could see it running. I decided the sampler was on it's final leg and installed a new one. ACC has worked fine ever since.

__________________
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.