a lot of problems are caused these days[because of age]by crud and debris in the valve body.before i went anywhere else i would pull valve body and have it o/hauled.it needs doing anyway and if you had no syptoms before just may be the cause.

__________________
David S Poole
European Performance
Dallas, TX
4696880422

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
http://www.w108.org/gallery/albums/A...1159.thumb.jpg