- Joined
- Jun 10, 2003
- Messages
- 4,158
- Reaction score
- 131
- Points
- 63
- Age
- 36
- Location
- Toledo, Ohio
- Vehicle Year
- 1987
- Make / Model
- Ford
- Engine Type
- V8
- Engine Size
- 5.8l
- Transmission
- Manual
- 2WD / 4WD
- 2WD
So, i bought a 91 f250 with a 351w. It's got the same tfi ignition they used on the rangers. it didnt run when i bought it, no spark. i put an unknown condition used tfi module in it and it fired right up, now the problem is that it misfires above 3,000 rpm. the misfire shows on the tach (universal, aftermarket tach) so i have to believe that the issue is before the coil, not in the plugs or wires, correct? either TFI or PIP? just dont wanna throw money at it
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