I've tried everything to get this car to run right and still a huge lack of high RPM and a severe miss over 4500.
New fuel pump
new filter
fuel pressure is at factory specs (40 psi)
new plug wires
new plugs
MAF cleaned with the proper cleaner
no vacuum leaks can be detected
no CEL
IMRCs were cleaned and seem to work fine
Intake is sealed up with new Ford gaskets
I have an OBDII interface for my laptop that reads most sensors and the short term fuel trim is going very high when it starts running like crap. When I push on it the reading is +35% and it lays down and misses bad. Im I correct in assuming thet means the computer wants to add fuel? I think it's trying to add, add, add.!
Some of you Mustang gurus please chime in here because I'm at the end of my rope. It's a good solid car that just needs something small fixed to make it a great running car again.
On another note, I don't know if the ECM has been flashed by a previous owner. How can I tell? If it has, can it be flashed back to factory?
Thanks in advance for any input, Steve
New fuel pump
new filter
fuel pressure is at factory specs (40 psi)
new plug wires
new plugs
MAF cleaned with the proper cleaner
no vacuum leaks can be detected
no CEL
IMRCs were cleaned and seem to work fine
Intake is sealed up with new Ford gaskets
I have an OBDII interface for my laptop that reads most sensors and the short term fuel trim is going very high when it starts running like crap. When I push on it the reading is +35% and it lays down and misses bad. Im I correct in assuming thet means the computer wants to add fuel? I think it's trying to add, add, add.!
Some of you Mustang gurus please chime in here because I'm at the end of my rope. It's a good solid car that just needs something small fixed to make it a great running car again.
On another note, I don't know if the ECM has been flashed by a previous owner. How can I tell? If it has, can it be flashed back to factory?
Thanks in advance for any input, Steve