It started with low power so I changed out the spark plugs to NGK and it was fine for a month or so. After a month it started having low power again so I took out the spark plugs and checked them all to see if the gap was correct and that they were not damaged or burned out. All the spark plugs and wires were fine so I put them back in the correct cylinders and firing order.
Well later that day when I was going to the gym the car began to feel like it was only on 3 cylinders and nearly died going uphill as well as sputtering and barely making it. I made it to the gym and parked it as I worked out. When I went back outside, after about 3 hours, and cranked the car it would turn over just fine but not turn on, or if it did turn on it would quickly turn off. So I had it towed home and left it till morning.
In the morning I came out and it still would not start. So I checked all the plugs again and ended up cleaning one that looked dirty and putting it back in. It then started and ran all day about 25 miles but on the way home at night it died again while moving and once again it turned over but would not start so I ended up pushing it home a mile or so.
The next morning my mechanic came out and tested all the components. Fuel system was at 55 psi which was normal for that car and the filter was not clogged. We tested the cap, rotor, distributor, ignition coil, coil wire and all checked out. The fuel pump shut off button in the trunk was ok too. So we determined it was not the fuel system, and the battery, alternator, ignition system, alternator belt etc were all working fine.
He had a hunch it might be the Ignition Control Module so he replaced that and the car started and ran better than it has in a long time, more importantly it would start on command and not shut down once it heated up.
Well the next day it began to start rough and idle really funny as well as try to shut off at idle in park, I though maybe it was just cold so I let it warm up about 2 minutes and then left. I drove about a mile and came to a stop at a red light and it died. I put it in park and cranked it and it started right up, roughly again though. I began keeping my foot on the gas at lights very lightly, maybe 1 rpm or less, and it did not die again until I forgot to keep my foot on the gas at a stop sign and this led to it dying but again starting up. So I drove it home and let it idle while in drive and it did not die. I'm fresh out of ideas, any suggestions. Could it have something to do with changing the Ignition Control Module?
I was thinking maybe MAF sensor or Idle Speed Sensor.
have the same problem?
Friday, February 5th, 2010 AT 9:20 PM