Hi all:
I have an 88 GT 5.0 with a vortech s-trim supercharger, E303 cam, and many other bolt ons.
The car has been very reliable for the 9 years I've owned it.
It was recently in the body shop for almost 10 months and I just got the car back. It ran perfect before it went to the shop and now I'm having an issue with it stalling after running for about a minute.
The car starts right up cold. It runs for about a minute, then instantly dies (no sputtering). Seems electrical. If I give it gas as it dies it will barely sputter until I let off the gas. The car will restart instantly and will do the same thing about a minute later. If I keep trying to restart it, after about the 3rd of 4th time it will just keep cranking. I'll let it sit for a few minutes then it will fire right back up.
I tried to see if any codes were present but I did not come up with any (it was also my first time pulling codes so I believe I did it correctly following other posts I found but could have been doing something wrong. I was using a digital multimeter which I assumed would work ok to see the voltage spike?)
When the car dies, I can still hear the fuel pump running for a few seconds so I don't believe it's a fuel delivery issue. I tried sitting in the car and holding it at 2500rpm to see if it dies and it still does every time.
The only thing I noticed when doing this was right before the car died, my autometer aftermarket tach showed the RPM's jump to about 3000 and then move a bit, then the car cut out. The stock RPM gauge did not do this. I didn't install the tach, but I assume it is getting the signal directly from the blaster coil.
After doing some digging on the forums it appears it could either be the TFI module, PIP sensor, or coil.
Others mentioned similar problems happening with a bag ignition switch/bag ground/bad wires/bag plugs/bad distributor cap and rotor, etc. But if I had any of these problems I would believe it would be hard to start every time, and not fire up when cold or semi/cold consistently. True?
I think best clue I've found so far is the RPM "jump" on the tach right before it dies. Does that indicate the TFI is telling the coil wrong info? Or does not mean the coil is bad?
I found a link to test the different pins of the TFI for resistance, but haven't tried it yet. I figured if I was going to remove it to test it I should have a replacement in hand so I'm about to go get one from the parts store.
http://www.myo-p.com/Ford-EEC/EEC Help files/Files/TFI test and troubleshooting.html
It also seems like when the PIP sensor is bad, it is bad all the time not intermittently. Am I understanding that correctly?
Any help is greatly appreciated!
Thanks,
Tom
I have an 88 GT 5.0 with a vortech s-trim supercharger, E303 cam, and many other bolt ons.
The car has been very reliable for the 9 years I've owned it.
It was recently in the body shop for almost 10 months and I just got the car back. It ran perfect before it went to the shop and now I'm having an issue with it stalling after running for about a minute.
The car starts right up cold. It runs for about a minute, then instantly dies (no sputtering). Seems electrical. If I give it gas as it dies it will barely sputter until I let off the gas. The car will restart instantly and will do the same thing about a minute later. If I keep trying to restart it, after about the 3rd of 4th time it will just keep cranking. I'll let it sit for a few minutes then it will fire right back up.
I tried to see if any codes were present but I did not come up with any (it was also my first time pulling codes so I believe I did it correctly following other posts I found but could have been doing something wrong. I was using a digital multimeter which I assumed would work ok to see the voltage spike?)
When the car dies, I can still hear the fuel pump running for a few seconds so I don't believe it's a fuel delivery issue. I tried sitting in the car and holding it at 2500rpm to see if it dies and it still does every time.
The only thing I noticed when doing this was right before the car died, my autometer aftermarket tach showed the RPM's jump to about 3000 and then move a bit, then the car cut out. The stock RPM gauge did not do this. I didn't install the tach, but I assume it is getting the signal directly from the blaster coil.
After doing some digging on the forums it appears it could either be the TFI module, PIP sensor, or coil.
Others mentioned similar problems happening with a bag ignition switch/bag ground/bad wires/bag plugs/bad distributor cap and rotor, etc. But if I had any of these problems I would believe it would be hard to start every time, and not fire up when cold or semi/cold consistently. True?
I think best clue I've found so far is the RPM "jump" on the tach right before it dies. Does that indicate the TFI is telling the coil wrong info? Or does not mean the coil is bad?
I found a link to test the different pins of the TFI for resistance, but haven't tried it yet. I figured if I was going to remove it to test it I should have a replacement in hand so I'm about to go get one from the parts store.
http://www.myo-p.com/Ford-EEC/EEC Help files/Files/TFI test and troubleshooting.html
It also seems like when the PIP sensor is bad, it is bad all the time not intermittently. Am I understanding that correctly?
Any help is greatly appreciated!
Thanks,
Tom