I'm looking for some advice from you 5.0 guys out there, with an ignition issue on my 95GT.
The car has aprox 70K miles on the clock, it's a 5 speed, and I had the car tuned this spring to solve an engine ping problem. New wires, cap, rotor, and fuel filter. The IAT and MAF sensors both cleaned up.
The car has been running great, until recently when the weather has turned cool. The engine has been 'stumbling' at all points through the RPM range. If the problem occurs when the car is just idling, it usually stalls the car.
When driving, the rpms will suddenly drop by about 2-300, then bounce right back up. This might happen once, or happen repeatedly. When the car is cold, it does this quite often. As the car warms up, the problem slowly goes away...after aprox 25 mins of driving it runs perfectly.
The car jerks, and feels like it's missing on two or more consecutive cylinders.
I get no Check Engine Light at all.
If the problem continues to get worse, it will soon be undriveable. I've tried swapping out the Throttle Position Sensor, and the problem persists.
The local Ford Dealer think's it could be the IAC valve, but that wouldn't account for the problem occuring at wide open throttle, would it?
I suspect an ignition system problem.
I pulled the new dist. cap off, vacuumed all of the fine metal particles out, and noticed that the PIP is loose, and moves around quite freely below the rotor. Is that normal? I would have to remove the entire distributor assembly to get a closer look, but this is slightly more complicated than I feel comfortable with, and may not be the problem.
The fact that the problem goes away when the engine gets heat soaked must be a clue, but I can't afford to start changing components randomly.
Any ideas guys??? I really can't afford to take it to a shop right now, so I'd appreciate any suggestions for where to start looking.
Thanks in advance,
-Cold 5.0
The car has aprox 70K miles on the clock, it's a 5 speed, and I had the car tuned this spring to solve an engine ping problem. New wires, cap, rotor, and fuel filter. The IAT and MAF sensors both cleaned up.
The car has been running great, until recently when the weather has turned cool. The engine has been 'stumbling' at all points through the RPM range. If the problem occurs when the car is just idling, it usually stalls the car.
When driving, the rpms will suddenly drop by about 2-300, then bounce right back up. This might happen once, or happen repeatedly. When the car is cold, it does this quite often. As the car warms up, the problem slowly goes away...after aprox 25 mins of driving it runs perfectly.
The car jerks, and feels like it's missing on two or more consecutive cylinders.
I get no Check Engine Light at all.
If the problem continues to get worse, it will soon be undriveable. I've tried swapping out the Throttle Position Sensor, and the problem persists.
The local Ford Dealer think's it could be the IAC valve, but that wouldn't account for the problem occuring at wide open throttle, would it?
I suspect an ignition system problem.
I pulled the new dist. cap off, vacuumed all of the fine metal particles out, and noticed that the PIP is loose, and moves around quite freely below the rotor. Is that normal? I would have to remove the entire distributor assembly to get a closer look, but this is slightly more complicated than I feel comfortable with, and may not be the problem.
The fact that the problem goes away when the engine gets heat soaked must be a clue, but I can't afford to start changing components randomly.
Any ideas guys??? I really can't afford to take it to a shop right now, so I'd appreciate any suggestions for where to start looking.
Thanks in advance,
-Cold 5.0