Resolved Slow throttle response and misfire
- Thread starter Tas_Jak
- Start date
Ho, all spark plug wires are correct for the HO, my timings at idle is around like 8, which I know is low but shouldn’t affect it that much right? 88 Mustang btw with a maf conversion done.
89ripper
Founding Member
8? Stock base timing is 10. Was the conversion done right? This is efi so these things are important
Set timing back to 12 since I’m running 93 in it, yeah pretty sure it wasn’t running like this a bit ago
89ripper
Founding Member
Well you said replaced every sensor, did you reset battery? Because if you did it could cause driveability issues until it relearns everything. You have lots of variables here.
It has a main electrical disconnect as it used to be a drag car, so the battery has been off and on repeatedly
89ripper
Founding Member
That I’m not sure about, I know it has a msd ignition box but I’m pretty sure it’s a stock ecu but upgraded for the maf
Update on this video, after holding down the pedal for a bit longer it will rev up but misfire, I can post a video if that will help again
No video, thanks.
Unless it's longer..
Also do you have another thread with this car here?
I don't want to ask all the obvious questions about the build.
Unless it's longer..
Also do you have another thread with this car here?
I don't want to ask all the obvious questions about the build.
No the other thread I had was a few months ago for a smoke out the exhaust that led to me rebuilding the motor.
89ripper
Founding Member
So lets rewind, was running before, just fine now you got issues...what things did you change? You changed sensors, but why?
