Just bought this car, drove fine for a few days then just stopped running. I narrowed it down to a bad TFI module, which I replaced with a NAPA part, and I used the thermal paste. Car fired right up, then promptly smoked (literally) the TFI. Prior to that I swapped the MSD coil for a oem stock coil thinking maybe the MSD coil, which has higher resistance, was causing an issue...overpowering the system. Check grounds, seem good, no shorts that I can tell. Could a bad distributor/PIP cause the TFI to instantly go up in smoke? Anyone had a similar issue?
94 Cobra wont stay running...
- Thread starter TX_Snake
- Start date
Got it running! After almost 2wks at the shop I drove it home tonight. Thanks for the help guys, your input helped me get a handle on this issue and get it corrected.
2nd day after I bought the car, it stopped running while driving home. Towed back to my shop and started looking into it the next day. found a TFI module completely fried, side melted out of it. Started tracing wires, checking resistance/voltage, grounds, etc. More I dug into it more I realized I had a major wiring issue, a squirell had been living under the intake judging by all the acorns/berries/insulation there....and chewed up wires. I ran out of ideas, so I had a electrical specialist come out before and after I swapped injector wiring harness. He then checked/rechecked all grounds/circuits related to that harness. found the PO had wired the fan into the CCRM to be on all the time as soon as you turned on the ign. This was the root cause of the issue. As soon as the wire was disconnected, the fault was gone, reconnected wire, fault was present. buttoned the car back up, broke, then fixed, some vacuum lines, retimed (swapped distributors thinking it was a bad Hall effect sensor), and now it runs great. I get to finally wash it tomorrow and see how well it will clean up. Thanks guys for the help, I appreciate it.
2nd day after I bought the car, it stopped running while driving home. Towed back to my shop and started looking into it the next day. found a TFI module completely fried, side melted out of it. Started tracing wires, checking resistance/voltage, grounds, etc. More I dug into it more I realized I had a major wiring issue, a squirell had been living under the intake judging by all the acorns/berries/insulation there....and chewed up wires. I ran out of ideas, so I had a electrical specialist come out before and after I swapped injector wiring harness. He then checked/rechecked all grounds/circuits related to that harness. found the PO had wired the fan into the CCRM to be on all the time as soon as you turned on the ign. This was the root cause of the issue. As soon as the wire was disconnected, the fault was gone, reconnected wire, fault was present. buttoned the car back up, broke, then fixed, some vacuum lines, retimed (swapped distributors thinking it was a bad Hall effect sensor), and now it runs great. I get to finally wash it tomorrow and see how well it will clean up. Thanks guys for the help, I appreciate it.
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