Even when the AC is shut off (and we haven't used it really since), I am still having the same problems. I have been able to officially rule out the air conditioner compressor as a problem.
For what I can understand so far, part of my problem is that the car is sometimes only running on 3 cylinders instead of 4. I had 2 spark plugs changed (one was definitely bad) and the spark plug wires changed as well (there was a small tear/burn) on the one wire - which are less than 1 year old and still under warranty), which leads me to believe that was causing the burn smell, because the smell is gone. After changing the spark plugs, it was fine for a little while like a few hours, but then the puttering started getting a little worse. It is still better than before. And I was told that it's definitely not the cylinder going bad because it is running on all 4 at certain time, it's just accelerating slow and flashing check engine soon light while accelerating and turning, and / or going over 40 mph.
What I am trying to figure out is whether the puttering could possibly be from mis-firing due to clogged the fuel injectors? I am still using bottled fuel injector cleaners, which aren't really working. I read on this site about the Motorvac carbon cleaning system which I am going to try and have done next week. Is there anything that I can try in the meantime, to narrow down the source of the problem?
Saturday, May 3rd, 2008 AT 3:20 PM