| Rough start/Sometimes rough idle |
Subject: Rough start/Sometimes rough idle by Fredbird on 2011/6/16 21:33:42 Just started last week... (1991 C4) All of a sudden it's gotten very hard to start, and sometimes when I first start it after it's been sitting for a day it just doesn't want to keep running... start stumbling all over. I'm replacing the Dist cap/rotor because I don't know when it was las replaced and last time I was trying to adjust timing it got the living daylights shocked out of myself... So I think it's cracked. I'm also going to replace the fuel filter because I also don't know the last time that was replaced... and at 109,000mi... it's a good thing to replace. I've also got "On hand" an iginition coil if my current one tests bad, and the Iginition Control Module. Those were two things that were definately referenced in the FSM as possible contributors. I've also noticed that when the car is idle... RPM's seem to fluctuate a bit. It's almost as if it's hunting... Timing is at 6 above TDC, I'm going to also test the pickup coil if I can figure out what the FSM is saying on how to test it... PCV valve is completely clean and free. Plugs and wires are new... (Replaced them a month ago.) I also will try to test the MAP sensor... once again if I could figure out the proper way to do that. Any other ideas? |
