Hey new to this forum I have had my mustang for a few years finally got a steady job ready for some mods. Mods so far: CAI-UPR Long tube headers-BBK Off road x-pipe-BBK SLP loud mouth resonators Hurst short throw shifter Smog delete MSD wires MSD coil MSD cap & Rotor After I put my exhaust on I had an issue when starting. When I start it it will rev high(I know it's in open loop so it will rev high, it's higher the that). Sometimes it will even die right after I start it. When I'm driving in in any gear at about any speed it will pop through the exhaust and if I go wide open throttle it won't do it anymore. So someone time me it could be an O2 sensor, I agreed because I had trouble getting my old O2 sensor out and thought I might have damaged it and replaced it. Any help would be great. Thanks Sent from my iPhone using Tapatalk
Well the high idle could be your IAC crapping out. The car is 20 years old, replacing the O2 sensors would help a bit, even if they're fine right now. As for the delay and popping through the exhaust, I had the same problem. Car felt like it wouldn't move at all, and felt the popping going through the exhaust. Turned out to be a bad o-ring on one of the injectors, so check your injectors
I dont know if it helps or if it works the same way but i had a similar issue on my '72. And it turned out that a spark plug wire was coming off. Same thing, power loss, and poping through the exhaust, however it didnt rev high or and i didnt WOT so i dont know if it would of solved it, but its worth a check just in case
Could be o2 sensors but Check those wires, could have one arcing off the headers, happened to me, car was running crappy and I poped the hood at night and I could see the arcing
i would check plugs, wires, gas integrity, clean throttle body, check iac for carbon, fuel pressure during good operation compared to acting up, Sent from my DROID RAZR using Tapatalk
I checked plugs, looked ok but I replaced anyway, my plug wires are good not touching the headers, I've been using 93 octane, I've cleaned my throttle body. All with no change Sent from my iPhone using Tapatalk
Watch this video. Pull the codes for free and even do the Cylinder Balance Test too. 1995 Mustang GT KOEO KOER Test - YouTube
