I am working on my 1999 E300 Turbo Diesel with 180k. The AC will work OK but sometimes it will blow hot on one side or the other. Mostly the right side. With the help of Steve B. I have found that by taping on the ACC dual valve it will go back to normal. This thing has what looks like 2 solinoids held on by smaller than #15 tourqe fastners. My question is, can this thing be taken apart to find if something like the inside of a hose is making it stick? Steve has told me that it works by pulsing so I can see that some small thing could get lodged and jam it open or maybe an intermitent ground fault.

Thank you
nohuti
Roger
1999 E300 TD 180K
84 930 50K

You'll find the answer here along with pics.... you'll need to register and sign in first to be able to read the how to section of the forum:

http://mbclub.co.uk/forums/showthread.php?t=26888

or you may be able to read this without registering.

http://mbclub.co.uk/forums/showthread.php?t=26854