Recent content by Jeepin789

  1. J

    Rough idle and codes p0300, p0301. Tough time diagnosing but finally found the problem.

    Haven’t tested compression after the valve job since it’s running normal again but I’ll throw the tester on there when I get a chance. I believe 80psi running compression is pretty normal for a 4.0 with 225,000. We have another xj with 230,000 and it has about 80psi for running compression too...
  2. J

    Rough idle and codes p0300, p0301. Tough time diagnosing but finally found the problem.

    I searched high and low on the web while trying to sort this issue so I figure I'll share and hopefully save someone else some time. A few months ago my 1996 xj 4.0 aw4 started having a rough idle and p0300, p0301 codes. Other than that seemed to run fine. I tested/cleaned injectors, tested...
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