Engine Mechanical problem
1999 Chevy Cavalier Front Wheel Drive Automatic
Getting P0300 Random Misfire code. Car idle very rough and stalling. Very difficult to accelerate. Car missing so bad it takes long time to get up to speed. Once up to highway speed it seems to run pretty well. Replaced plugs, plug wires and front CAT. Had coil pack checked and it was OK. Could the rear CAT cause this? When I first checked codes there was also a P0141 O2 Heater Circ Malfunction. AutoZone said only rear CAT has heater circuit. But once I replaced the parts above and cleared codes I'm just consistently getting P0300 code. 2.2 L, 96,000 miles. Also unplugged MAF on intake hose and no difference or code. Could it be EGR, MAP, Knock sensor, rear CAT? Help?
Saturday, October 25th, 2008 AT 9:19 PM