Let me start by saying I greatly appreciate any time you guys will save me. Divorce, blah blah, money and time.
Car
1995 Cobra
Stock engine. Stock computer. Mods are fuel pressure regulator, exhaust, gear, brakes, and suspension.
Problem
Car intermittently stalls. It will restart after it sits for a while. It will also restart immediately when the spout is removed.
Attempted solutions
• Removed motocraft TFI I installed a few years ago and installed another Motocraft TFI. Same problem.
• Pip sensor. Installed a Napa dizzy. Set timing to 10. Same problem.
• Fuel Pressure
Unattempted solutions
I did not replace the computer. A few internet searches showed TMoss saying "Anytime a car runs with the Spout plug out but not in - it's the computer!"
Some more searches backed this up - This thread shows the same
Because the car will start and run with the spout out when the intermittent stalling occurs, do I assume
• The TFI is fine
• The PIP is fine
• I need to investigate the computer and wiring when the intermittent problem occurs?
If so, do I use this checklist?
Thanks for any help.
Edit; Just found this checklist. http://www.stangnet.com/mustang-forums/threads/mustang-cuts-out-and-dies-after-warm-up.827901/
Car
1995 Cobra
Stock engine. Stock computer. Mods are fuel pressure regulator, exhaust, gear, brakes, and suspension.
Problem
Car intermittently stalls. It will restart after it sits for a while. It will also restart immediately when the spout is removed.
Attempted solutions
• Removed motocraft TFI I installed a few years ago and installed another Motocraft TFI. Same problem.
• Pip sensor. Installed a Napa dizzy. Set timing to 10. Same problem.
• Fuel Pressure
Runs at 32 psi
When i shut it off, it immediately drops some, then raises and holds at 34psi.
After it sits warm, and I put the key in run (not starting), the puel pump whines. I get out and check, and its at 34psi.
Starting while hot, it goes to 32 psi.
• Took the computer out. it looks great. I dont see any burned out connectors. Connectors look good.When i shut it off, it immediately drops some, then raises and holds at 34psi.
After it sits warm, and I put the key in run (not starting), the puel pump whines. I get out and check, and its at 34psi.
Starting while hot, it goes to 32 psi.
Unattempted solutions
I did not replace the computer. A few internet searches showed TMoss saying "Anytime a car runs with the Spout plug out but not in - it's the computer!"
Some more searches backed this up - This thread shows the same
Because the car will start and run with the spout out when the intermittent stalling occurs, do I assume
• The TFI is fine
• The PIP is fine
• I need to investigate the computer and wiring when the intermittent problem occurs?
If so, do I use this checklist?
1. Check for PIP signal at ECM connector, engine cranking (pin 56).... it should oscillate between 3 - 6 vdc.
2. If 1. fails, need to check for an open from pin 56 to the TFI connector, or short to power or ground.
3. Check for the same voltage output as in 1. at the SPOUT connector, engine running plug removed.
4. If 3. fails, check SPOUT wire from pin 36 at the ECM connector to the SPOUT connector and the TFI connector plug connected (same check as #2).
5. if 1-4 are a PASS..... ECM is kaput.
2. If 1. fails, need to check for an open from pin 56 to the TFI connector, or short to power or ground.
3. Check for the same voltage output as in 1. at the SPOUT connector, engine running plug removed.
4. If 3. fails, check SPOUT wire from pin 36 at the ECM connector to the SPOUT connector and the TFI connector plug connected (same check as #2).
5. if 1-4 are a PASS..... ECM is kaput.
Thanks for any help.
Edit; Just found this checklist. http://www.stangnet.com/mustang-forums/threads/mustang-cuts-out-and-dies-after-warm-up.827901/
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