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  1. 04 93 aero po638 code and limp mode symptoms

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    I was changing my spark plugs and accidently broke one of the coil pack bolts getting it out. Finished up and drove it to the store to replace the bolt and the engine suddenly kind of 'cut out' and wouldn't rev above 2500. Replaced the bolt, checked everything over, right plugs, torqued down...
  2. 04 93 aero, changed plugs now having serious issue, PLEASE help me out here!

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    Hi I just bought this car, 2004 9-3 aero, 140k miles. Already sunk over 2 grand in bringing it up to snuff. I just put in new ngk plugs, they're gapped properly, they are torqued down to 21 ft/lbs, the coil packs seem fine. Finished up, drove car around and it was driving much more smoothly...
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