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nesralyrrej
Member
- Joined
- Jun 23, 2014
- Messages
- 309
- Reaction score
- 2
- Points
- 18
- Location
- Arvada Crawlarado
- Vehicle Year
- 1990
- Make / Model
- ford
- Engine Size
- 4.0 s/c
- Transmission
- Manual
- My credo
- Make it fast, Make it loud.
97 f150 4.6, misfire randomly starts and shakes the truck pretty bad, my scanner says cylinder 4 and 7, so I started with what everyone would. Plugs and wires, no change, replaced coil packs, no change, replaced maf, no change, replaced the pcm, seemed to rub better for about 12 miles and started shaking again. I know on the Mustangs and Lincoln's can have the icm's go out and it will fire paired cylinders at the same time (4 and 7 are paired) the f150's don't have serviceable icm's. So I'm beginning to think.. Maybe worn wires that are touching something they shouldn't at random unpredictable intervals. I'm losing my mind here guys, get back to me!
