sputtering

  1. S

    Bad idle and sputtering when hot

    I have a 92 mustang 5.0 with some mods done. when cold started it has a rough idle unless I unplug the iac the rpm’s drop the way they should. it’ll drive fine for about 10 mins and then it’ll bog completely on its face past half throttle and will eventually die if you don’t pull over and let it...
  2. Barron91lx

    Sputtering until warm

    I finally have my car running great, when it's warm that is. It's very strange. It starts fine and idles fine, but when starting out it feels like it's missing. Most notably, driving at a constant speed in third, it sputters. Then like a switch, at around the same place on the road, it...
  3. D

    Engine 2002 V6 Sputtering On acceleration

    I recently purchased a 2002 v6 model from a gentleman in the area, the car only has 134,000 miles on it. It runs great in idle, very smooth and quiet. Upon accelerating the car sputters, runs very rough and the acceleration itself is really poor. I have tried a few things already, I put new...
  4. O

    For Those Who Care

    For those who care to take a guess at the issue or have seen this issue before!- As warmer weather nears, I'll be fiddling with the car to get more info. Here are the specs/ concerns: -88 original 5.0 car Paxton novi 1000 supercharged with FMU - (No chip in ECU) -Car is still speed density...
  5. s2s281sc

    Engine 2000 Saleen Series I I ; Mil Status Off, Running Rich, Idle High

    I've recently purchased a 2000 saleen series ii mustang that is: Running rich Idling at high rpms (1,500) Sputters at lower rpm band When I plug in my obd2 I'm getting "Malfunction indicator lamp (MIL) status Off", so I can not check for any error code, which is frustrating or a at least it...