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    Running on 4 cyls, strange tack readings...

    Hmmm. Starting about 2 months ago my 89 SHO developed an intermittent low-power problem, whereby it'd be chugging on only 4 cylinders. Pulled the codes, they indicated one of the coils was bad. I checked the wires running into the coil pack, and all of them had a power signal, so I replaced...
  2. A

    Low power - Coil pack or DIS module or both? (pulled codes)

    The car: 1989 SHO with heads rebuilt 8000km ago. For the past couple of months, at idle there's been an occasional misfire-- nothing significant enough to make me want to pull the codes. Today I'd driven to school, parked for a couple hours, then I headed home. I left the parking lot, and my...

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