Nickmustangfps
Junior Member
- Joined
- Feb 6, 2021
- Posts
- 7
- Reaction score
- 0
my 2007 mustang gt has been running rough for years with no codes. Originally I replaced the coil packs and it ran great for about a day then started to misfire again. Shop told me it was because of a bad alternator frying the coils but by the time I replaced the alt and coils again it didn’t help. I’ve replaced just about every part (coils, plugs, injectors, o2s, pcm, wire harness, cam solenoids, full exhaust, battery, timing assembly, piston rings, and had the heads checked) mechanically the engine is fine with full compression so idk what the issue is. I did notice the wire connection to the driver side coils read 11-12 volts when running but the passenger side all reads 14. Neighbor said it should be fine bc the coils up the voltage significantly but that voltage drop seems to be the only thing off in diagnostics. Additionally the car feels sluggish and can only go 0-60 in 6.5 secs at its best. (Stock should be 5.2) PLEASE HELP