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Recent content by arib

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    p0301 missfire help

    See this thread about the cam sensor in my 98 4.0. I had a pretty constant P0301 code and check engine light and slight miss for 2 years, after synching my cam sensor it is running like new, no audible misfire anymore. The check engine light and p0301 code has come on once (went off the same...
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    P0301 and rough idle

    Update: just completed the cam sensor alignment using gradon's write up, disconnected and reconnected the battery, and the 254k old 4liter sounds and runs like new. Standing next to the engine you can barely tell its running. No more rough idle, and no CEL after idling for about 10 mins. Im...
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    P0301 and rough idle

    Awesome!! Thanks so much gradon! Ive been busy at work today but will try that tmrw. I saw the 3-4 or however many holes on the pulse ring under the plastic piece last night and didnt know which one to line up, thanks again for the awesome write up! o-gauge I was thinking that possibility as...
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    P0301 and rough idle

    Awesome thanks guys. gradon, that is the one thing I have yet to really troubleshoot. Through all of my research it said the toothpick trick only works on the 00-01 with the coil rail. I just took a look at the cam sensor in my dizzy, and its slightly different than the one in the write up, with...
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    P0301 and rough idle

    Hey all, first off I have a 98 XJ 4.0/5 speed 4x4 with 254k miles and still love it. However, in my 4 years and 40k miles of owning it, it has always displayed an intermittent P0301 code and CEL (cyl 1 misfire), but always ran great with a slight miss at idle as well as a rough idle. About 2...
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    cylinder 1 misfire - update

    I have the exact same problem on my 98 4.0 5 Speed. Good compression, good mpg, good spark, but every once in a while (once or twice a month for the past few years) it throws the P0301 code. CEL always goes off after a few trips. Puzzling stuff!
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    Code P0301 and P0320

    Been lurking for a long time awesome site! Here's my first post. On my 1998 XJ 4.0 5 spd with 225k miles I've been getting an ever increasing tick when accelerating, and a low end rattle and piston slap from the engine at idle. Exhaust manifold is new and there is no exhaust leak (I've checked...
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