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rpms jump

  1. SVT & DOHC
    hey there fellow mustung guys.. i recently purchased a 98 mustang cobra as my first sports cars ive been into crotchrockets... Anyways..... when i pull up to a stop and take it out of first it wants to idle at 1,200-1,400rpm for about 5 seconds before dropping to 900rpm. at one point it was...
  2. 94/95 Tech
    Recently I had an issue where the GT wouldn't stay on and it ended up being a bad coil (MSD Blaster #8227). I replaced it with an Autozone version and the GT fired up. Ran fine for a few days but then I started to feel some hesitation. As I would accelerate I would see the tach jump in small...
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