I have a 98 v6 mustang that has been v8 swapped.
The car starts and idles perfectly with no problems at this point. If you rev it in neutral slowly it's fine, but if you give it some major throttle (>40-50% i'd say) it will miss a bit. This basically only occurs below 3000 rpms, after that it does not seem to miss.
Then, if you put it in gear (1, 2, D, R... though R will spin the tires slightly in our gravel driveway then go back to the same problem) and just let it go on it's own it'll stumble slightly but slowly pick up. IF you give it ANY throttle (5%-100%), it will stumble and not get out of it's own way.
I have never had it out on the road for fear of it stalling or not making it up a hill on me. Since our driveway is relatively short, I've not been able to even get it above 1200-1500 rpms in gear.
I've changed or checked- fuel filter, fresh gas (mixed with what was in there and some lucas fuel stuff), spark plugs, TPS has been checked, new EGR solenoid, changed MAF sensor, new coil pack, etc
Fuel pressure has been measured at a steady 30 psi at idle up to 40 psi at WOT.
The OBD2 scanner throws codes for the transmission and for O2 sensors.
I'm completely lost on this thing. Can anyone either suggest to me a good (affordable too) modular mechanic near Knoxville, TN or give me some insight as to what might be my problem?
The car starts and idles perfectly with no problems at this point. If you rev it in neutral slowly it's fine, but if you give it some major throttle (>40-50% i'd say) it will miss a bit. This basically only occurs below 3000 rpms, after that it does not seem to miss.
Then, if you put it in gear (1, 2, D, R... though R will spin the tires slightly in our gravel driveway then go back to the same problem) and just let it go on it's own it'll stumble slightly but slowly pick up. IF you give it ANY throttle (5%-100%), it will stumble and not get out of it's own way.
I have never had it out on the road for fear of it stalling or not making it up a hill on me. Since our driveway is relatively short, I've not been able to even get it above 1200-1500 rpms in gear.
I've changed or checked- fuel filter, fresh gas (mixed with what was in there and some lucas fuel stuff), spark plugs, TPS has been checked, new EGR solenoid, changed MAF sensor, new coil pack, etc
Fuel pressure has been measured at a steady 30 psi at idle up to 40 psi at WOT.
The OBD2 scanner throws codes for the transmission and for O2 sensors.
I'm completely lost on this thing. Can anyone either suggest to me a good (affordable too) modular mechanic near Knoxville, TN or give me some insight as to what might be my problem?