Engine Performance problem
1991 Cadillac Brougham V8 Two Wheel Drive Automatic 190000 miles
My car is a 1991 cadillac brougham d elegance v8 305 5.0L. My probelm is this. I will drive on the highway and it will drive fine. Here is the kicker if I go above speeds of 58 what happens is when I come to slow down to a stop my car will start idling real rough and will almost stall out. My probelm is I cannot find what is causing this. I got no check engine light and I cannot find a solution. I have checked every vacuum line and have no leaks. I have replaced the EGR valve, the TPS sensor, the catalytic converter, the IAC motor and still cannot find the problem. I have prot injection and the jets are spraying fine into each chamber of the throttle body and there is no problem with fuel. I am stumped and cannot figure this out. This has been going on for months and I would like to be able to drive my car at high speeds again and not worry about it stalling out. Please help me if you can I am in need of it.
have the same problem?
Monday, December 7th, 2009 AT 5:53 PM