The reason I believe the cat to be obstucted is: I recently changed the O2 sensor, shortly after that I noticed, when I am decelerating I hear alot of back pressure coming from the exhaust, does this make any sense? Also, when changing the fuel pump and fuel filter, I noticed the metal around the cat was peeling off. The car does have over 192,000 mis. on it. I don't smell anything(rotten egg smell) or anything like that.

------------------
Richie
1986 300E W124
tint windows
clear corners
euro headlights
16"chrome lorinsers RS90
soon to be 94/95 taillights