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  #33  
Old 13-03-2018
awg  awg is offline
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Quote:
Originally Posted by Sobek View Post
Just trying to track down the pickup coil at the moment. Called around and either no one can get one, or places like Burson reckon they can.... For $230. Might be a dealership or online order for this one sadly, just too obscure a part - the guy at Burson was pretty surprised when I got spark plugs for the XJ, says they never sell those any more and no one with these Jeeps ever really comes in. Maybe it's just those prices, yikes.
I would be inclined replace the entire dizzy ebay $178, given the way things looked, they can get worn on an old motor, which should include all needed parts (I think)...check the sensor wires very carefully for splits/damage..wiggle it to see if the motor stalls, XJ wires can be "bad inside"
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Last edited by awg; 13-03-2018 at 11:42 PM.
  #34  
Old 20-03-2018
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Definitely thinking I might just replace the whole lot - have money coming in just over a week from now and I'm going to hit Rockauto for a whole lot of parts. In the mean time, I took the dist cap off, cam sensor (coil pickup, your choice) and cleaned everything up - the cam sensor ribbon cable was a little kinked where it exits the sensor itself, so I straightened that out and reinstalled it in a way where that won't happen. I've done a couple of shorter runs to the shops and back and so far, zero issues. I need to do a horse feed run today so that will be the big test - sure hope it doesn't die out on me at 100kph on the motorway with a full load of hay!! Hah...

Can anyone tell me, from my pictures on the last page, does the dist cap button look worn to you?



It's practically flush with the plastic housing. Maybe this is also to blame for some of the erratic running? Thinking I should just pick up a dist cap locally in the mean time to be safe.
  #35  
Old 24-03-2018
ATOMICPUNK  ATOMICPUNK is offline
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get a new cap.
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  #36  
Old 24-03-2018
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frosty and worn
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/__l_l_,\____\,___
l_---l_l__l---[ ]llllll[ ]
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  #37  
Old 24-03-2018
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New cap and rotor installed yesterday, plus an oil change and filter Didn't get a second to spare to drive it so will be doing that tomorrow.

Rotor button in the old dist was flush with the plastic housing, I was on borrowed time. Comparing the old rotor to the new one though, there was zero wear, but I replaced it anyway - got an emergency spare now at least.

In a week I'll get a bunch of parts from Rockauto but hopefully for now this helps it along, camshaft / pickup coil sensor will come from Rockauto too. I shopped around for a new fuel filter and it was a bit ridiculous, the absolute cheapest I could find one for was $45... For such a piddly little filter!! That's going to be an online order too.

Feels good to get these maintenance items squared away though, just one less thing to worry about. Will report back after I do some longer drives and see how it fares, thank you again everyone
  #38  
Old 24-03-2018
alexbrown64  alexbrown64 is offline
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I started reading this thread from the beginning and the straight away i thought coil, as my XJ used to have the exact same symptoms.

Glad you replaced the coil as yours looked fcuked. Your cap and rotor are also completely rooted and i probably wouldnt drive the car until you replace them. Rockauto has the cap/rotor combo for $5.67 (ULTRA-POWER 3D115

I replaced my XJ coil today ULTRA-POWER 8228 Ignition Coil $18.98, as well as the cap/rotor and plugs. Jeep is running brilliant now.

I usually do the cap/rotor/coil/plugs every couple of years just as a matter of recourse. The whole lot through RockAuto is less than $40. After i had my XJ chew its own rotor button up and have an intermittent fault with the coil, i just change them all out now regardless of condition.
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  #39  
Old 26-03-2018
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Cheers Alex, well, it's certainly nice to have all those parts new now, I'm a huge fan of preventative maintenance but the Jeep is a little behind the ball in that department - but I'm working on it!!

Unfortunately, the rough running is still there. I did my horse feed run today, which is roughly a 20km / 30 minute round trip. Everything was running BEAUTIFULLY smooth and fine right up until I was a minute from home, and then it just started to hesitate as I made it home. No check engine light, no error codes. Engine was running at about 70c the whole trip, so everything was as good as it could be.

So it looks like the ign coil, dist cap, rotor, plugs and leads aren't the culprit, but it sure is nice that they're all sorted either way. Now I just need to look at the other possible culprits - what do you guys think. I will replace my camshaft sensor, although I'm not sure that fits the circumstances of this problem exactly. I hear a lot of people talk about DME issues on these cars with high mileage or age, anyone ever had rough running like this when warmed up? Bad solder joins maybe? I would expect it to just stop working though, not cause a weird misfire after half an hour. Hmmm.

Open to ideas here!
  #40  
Old 26-03-2018
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they do silly things when they get bad earths, never heard of DME.
for stumbeling only when hot& fixing itself once its cooled down, suspect;
crank sensor, coil, and cam sensor, in that order.
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