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test jumper

  1. J

    Sunroof problems

    The sunroof on my 04 Explorer stopped working without any notice, when I push the open switch it does nothing, no noises or movement. I checked the fuses under drivers side and under hood and they are still good. When I tested the wires using a light tester, I noticed that none of the wires to...
  2. J

    1994 2.3L Engine runs better with diagnostic test jumper installed - why?

    From previous thread: 1994 2.3L 5 speed base model Mazda B2300. Engine ran ROUGH, no power, backfired, bogged down etc. Replaced Fuel pump assy, cleaned tank, new fuel filter. Cleared codes. Added SeaFoam cleaner to tank of fresh gas. codes 111,111 and that's all. Looks like only "pass"...
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