Hey everyone having some problems with my stang hopefully someone has an answer. Dont flame either I've looked through every forum imaginable, I think i know the problem but right now I just want to verify what I think.
Ill include full detailed long story and the short story
Short Story:
Car stutters, hesitates, and backfires through intake. Sometimes while sitting on the driveway when I hit the throttle but most of the time when under load trying to drive down the street. Usually between 2500-3700 RPM. Once it gets past that its fine and has lots of power.
I think its the MAF it has a PMAS that is calibrated for my 24lb injectors. When I unplug the MAF it runs better (weird right?) and I have NO hesitation or stutter or backfire. So should I try replacing the MAF or what?
Long Story:
Got the car 8 months ago. It ran and seemed fine but upon closer inspection it turned out the timing was all jumbled up. Got the wires going in the right direction set the timing to 12* then the car started to have an idle surge.
Went through the whole checklist for surging idle. Checked the codes and came back with many. Notably code 66 and codes for lean condition on left and right side. Replaced fuel filter and finally installed a new idle air valve which had to be installed upside down for it to work correctly lol. The surging stopped but now I have a new problem:
First it started out with no power between 2500-3700 RPM's while in gear but would idle and rev fine. Every time I tried to drive from a stop as soon as it reached those RPMs it would stutter, hesitate, sometimes backfire through the intake. Replaced the o2 sensors thinking it was just a lean problem because the factory sensors were still in place and replaced the spark plugs. Ive cleaned the air filter and sprayed the MAF with MAF cleaner. Still the same problem but now its gotten worse. It will stutter, hesitate, and backfire even while idling when I hit the throttle on the driveway. Sometimes it will try to die out. Once it gets past 35-3700 its fine and has lots of power whether stopped or driving.
Ill include full detailed long story and the short story
Short Story:
Car stutters, hesitates, and backfires through intake. Sometimes while sitting on the driveway when I hit the throttle but most of the time when under load trying to drive down the street. Usually between 2500-3700 RPM. Once it gets past that its fine and has lots of power.
I think its the MAF it has a PMAS that is calibrated for my 24lb injectors. When I unplug the MAF it runs better (weird right?) and I have NO hesitation or stutter or backfire. So should I try replacing the MAF or what?
Long Story:
Got the car 8 months ago. It ran and seemed fine but upon closer inspection it turned out the timing was all jumbled up. Got the wires going in the right direction set the timing to 12* then the car started to have an idle surge.
Went through the whole checklist for surging idle. Checked the codes and came back with many. Notably code 66 and codes for lean condition on left and right side. Replaced fuel filter and finally installed a new idle air valve which had to be installed upside down for it to work correctly lol. The surging stopped but now I have a new problem:
First it started out with no power between 2500-3700 RPM's while in gear but would idle and rev fine. Every time I tried to drive from a stop as soon as it reached those RPMs it would stutter, hesitate, sometimes backfire through the intake. Replaced the o2 sensors thinking it was just a lean problem because the factory sensors were still in place and replaced the spark plugs. Ive cleaned the air filter and sprayed the MAF with MAF cleaner. Still the same problem but now its gotten worse. It will stutter, hesitate, and backfire even while idling when I hit the throttle on the driveway. Sometimes it will try to die out. Once it gets past 35-3700 its fine and has lots of power whether stopped or driving.