Chicago SC
Registered User
My '91 SC just started to misfire or run rough when i get on the gas. If I drive it normal, it runs perfect. But once I really get on the gas, it will start to drive erratic. From 50 MPH or so, I can accelerate almost to the floor with no or little miss. But from a dead stop or when slowing down from a turn, it misses qiute bad when I punch it. The quicker I hit the gas the worse the shake. If i accelerate to WOT gradually, its okay or misses slightly at higher RPMs if anything. However, I can rev it to near redline in park or neutral without any misfire at all. Also it sometimes has a rough time finding idle when started up. this happens about 10% of the time, but it never completely dies. Could a clogged cat or muffler do this? how about a loose or frayed wire in DIS area? I'm stumped........... please help....
Thanks
--Chicago SC--
Thanks
--Chicago SC--