Rough Idle SOLVED!!!! Whoo-Hoo!!!

[egubala]

Originally Posted by egubala

My car has been running progressively rougher over the past year. Had @ several dealers who replaced the PCM, and transmission solenoids. That got rid of the trouble codes...dealer could find nothing else wrong but car continued to get worse.

I have personally replaced all injectors, done plugs and wires, checked grounds and sensor voltages (that were accessable), new alternator and battery, watched sensor outputs on code scanner during driving over the course of a week and saw nothing out of the ordinary on the scanner.

Original owner, have done routine maintenance but car does have high milage.

Car almost stalls when throttle is applied from just off idle. It stumbles until it finally catches up and then it takes off like a freakin' rocket.
Throttle position sensor was replaced first to eliminate this out of the equation.

After exhausting other options, I'm thinking it may be a plugged exhaust system. Has anyone experienced an exhaust problem?? If so, what were the symptoms?

Please help!!!! We are ready to strangle a whole pile of kittens. (just kidding!!)

It was the catalytic converter!!! It was plugged like a mo-fo.

Thought you all may like to know. My car is a 1995 Z34.