bigshotsho93
05-04-2017, 07:49 AM
Any SBF/Fox Mustang experts in the ranks? I have some unresolved issues and have a lot of contradictary info about the problems and their origins.
1977 Ford Bronco Resto-Mod
1991 Ford Mustang EFI 5.0 HO Swap
New Painless Chassis Wiring Kit
New Painless 5.0 Conversion Engine Wiring Kit
FiveologlyRacing.com (http://fiveologlyracing.com/) Computer and Maf, for a conversion (because not available new)
Completely stock rebuild on engine, stock injector size, stock computer, stock maf, eletric out of tank fuel pump with fuel pressure regulator.
No emissions components, no a/c, I have reinstalled the (new) EGR, just because I had it and it was an easy check to see if that was my issues.
On to the problems, The truck runs like crap! driving down the road it seems fine (not as much power as I expected but not bad) during Idle it will have inconsistent problems with idle speed, loading up and wanting to die, obviously low vacuum when low idle, and it will sometimes be to the point where it will need to be "2 footed" to stay running.
I have replaced the distributor and module in one shot (actually exchanged the new one that was in it) just to make sure there was no problem in there.
All grounds are good, timing is correct, no vacuum leaks, good and constant fuel pressure.
So do I have problems with the EEC thinking that there is still emissions like purge canister/valve etc. and need a chip to program those out of the computer? Or is there no need for that with removal of the emissions on a 1991 Mustang? If that is the case then any ideas of what my issues may be?
1977 Ford Bronco Resto-Mod
1991 Ford Mustang EFI 5.0 HO Swap
New Painless Chassis Wiring Kit
New Painless 5.0 Conversion Engine Wiring Kit
FiveologlyRacing.com (http://fiveologlyracing.com/) Computer and Maf, for a conversion (because not available new)
Completely stock rebuild on engine, stock injector size, stock computer, stock maf, eletric out of tank fuel pump with fuel pressure regulator.
No emissions components, no a/c, I have reinstalled the (new) EGR, just because I had it and it was an easy check to see if that was my issues.
On to the problems, The truck runs like crap! driving down the road it seems fine (not as much power as I expected but not bad) during Idle it will have inconsistent problems with idle speed, loading up and wanting to die, obviously low vacuum when low idle, and it will sometimes be to the point where it will need to be "2 footed" to stay running.
I have replaced the distributor and module in one shot (actually exchanged the new one that was in it) just to make sure there was no problem in there.
All grounds are good, timing is correct, no vacuum leaks, good and constant fuel pressure.
So do I have problems with the EEC thinking that there is still emissions like purge canister/valve etc. and need a chip to program those out of the computer? Or is there no need for that with removal of the emissions on a 1991 Mustang? If that is the case then any ideas of what my issues may be?