98 xj hesitates and clunks 2-4 times at random times
Thread Starter
Member
Joined: Apr 2017
Posts: 242
Likes: 15
Year: 1998
Model: Cherokee
Engine: 4 Cyl 6L
Even the pros get their asses kicked from time to time.
That would be an intermittent problem, and are the worst kind. Intermittent problems are like a fart in the wind. If youre not quick enough, it blows away.
A cut wire. Nice. I have no idea what its for or if its even part of the problem, but it looks like it may be the other end of that crimped wire below it, where that pink wire is now, which doesnt look factory. What color is it? Looks brown or violet. It may be nothing, but its worth finding out where it leads, just in case. And for peace of mind.
That would be an intermittent problem, and are the worst kind. Intermittent problems are like a fart in the wind. If youre not quick enough, it blows away.
A cut wire. Nice. I have no idea what its for or if its even part of the problem, but it looks like it may be the other end of that crimped wire below it, where that pink wire is now, which doesnt look factory. What color is it? Looks brown or violet. It may be nothing, but its worth finding out where it leads, just in case. And for peace of mind.
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Joined: Feb 2011
Posts: 14,479
Likes: 805
From: Blunt, South Dakota
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker
You'll notice the main table of contents, go to the system that you're needing to work on. At the start of each "chapter" it will show a table of contents for that section. Scroll down to the area in that chapter you're looking for. Start reading. Sometimes, it will refer you to another section to remove certain components that are in the way. You need to be able to learn to cross-reference in the manual...the nice thing about the PDF file is you can print only the sections you need...without having to flip back and forth. I print sections out all the time, haha.
As for using a mutlimeter...you need to have at least a basic electrical knowledge, look for youtube videos on how to use a meter, that should get you started. You need to be able to know what settings to put the meter on, how to test for continuity, how to use probes, etc....when probing, you need to put the leads on the conductor, either on the wire strands themselves, or at the connector pins.
As for your old man...tell him you'll never learn unless you try. Let him know you have an entire community backing you up and are willing to help. Also relay the fact that doing this stuff will not only give you the knowledge of your vehicle from front to back, but can save your butt someday on the road, and once learned, will cost FAR less than taking it to a mechanic...and give you a pride of ownership few people have nowadays.
Once he sees you are doing things the right way, and starting to make progress, he'll change his tune. Probably will start asking you to work on HIS car, LOL
What a great response.
Definitely take advantage of youtube for tutorials. Be systematic and document results/readings as roninofako stated earlier for later reference.
Remember to check the TPS also.
Definitely take advantage of youtube for tutorials. Be systematic and document results/readings as roninofako stated earlier for later reference.
Remember to check the TPS also.
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Joined: Feb 2011
Posts: 14,479
Likes: 805
From: Blunt, South Dakota
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker
Thanks, and it's the truth.
Just realize, troubleshooting/diagnostics is what make a mechanic. Even an amateur one. Anyone can turn a wrench and replace parts. What separates the men from the boys is being able to track down what the root cause is. It takes patience, dedication, thoroughness, patience, time, patience, a good shrink, patience, and...well you get the idea, haha
That said, even the best of the best get stumped. I've known life-long mechanics that have said just when you think you've seen it all, and think, nah, that's impossible...Murphy has a way of rearing his ugly head. Just accept that, try your damnedest, give it hell, and when you hit a roadblock, come and ask the question.
Just realize, troubleshooting/diagnostics is what make a mechanic. Even an amateur one. Anyone can turn a wrench and replace parts. What separates the men from the boys is being able to track down what the root cause is. It takes patience, dedication, thoroughness, patience, time, patience, a good shrink, patience, and...well you get the idea, haha
That said, even the best of the best get stumped. I've known life-long mechanics that have said just when you think you've seen it all, and think, nah, that's impossible...Murphy has a way of rearing his ugly head. Just accept that, try your damnedest, give it hell, and when you hit a roadblock, come and ask the question.
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Joined: Nov 2015
Posts: 2,863
Likes: 201
From: syracuse ny
Year: 1997 230,000 miles
Model: Grand Cherokee (ZJ)
Engine: 4.0, new lifters valve job with new springs and exhaust valves, preload set with shims
Ok now you look like this guy
Late comer to the discussion here, but breaking up at higher RPM's has always been a sign of secondary ignition failure. How about switching in a used coil? my 2 cents
Late comer to the discussion here, but breaking up at higher RPM's has always been a sign of secondary ignition failure. How about switching in a used coil? my 2 cents
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Joined: Feb 2011
Posts: 14,479
Likes: 805
From: Blunt, South Dakota
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker
One step at a time. He's young, new to this, and needs solid help.
Last edited by Rogue4x4; Aug 22, 2017 at 01:27 PM.
CF Veteran




Joined: Nov 2015
Posts: 2,863
Likes: 201
From: syracuse ny
Year: 1997 230,000 miles
Model: Grand Cherokee (ZJ)
Engine: 4.0, new lifters valve job with new springs and exhaust valves, preload set with shims
All yours. Didn't know it was a closed thread. I wont mess with you again. My bad.
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Joined: Feb 2011
Posts: 14,479
Likes: 805
From: Blunt, South Dakota
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker
Regardless, he is new to this, let's get him on the right path, not jump to conclusions, throw unbacked info out, and confuse the situation. I say we get him in the right mode to troubleshoot properly. That's all.
Trust me, if I wanted this thing closed, it would be.
Thread Starter
Member
Joined: Apr 2017
Posts: 242
Likes: 15
Year: 1998
Model: Cherokee
Engine: 4 Cyl 6L
I wossed out
i took it to my Works mechanic just for diagnosis and I feel like an idiot it was super simple a transmission line was leaking enough fluid to the point that it was so low it was slipping when it got too warm he found the leak fixed the leak topped it up and it seems to be fine but we won't know until I go to work tomorrow
i took it to my Works mechanic just for diagnosis and I feel like an idiot it was super simple a transmission line was leaking enough fluid to the point that it was so low it was slipping when it got too warm he found the leak fixed the leak topped it up and it seems to be fine but we won't know until I go to work tomorrow
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Joined: Feb 2011
Posts: 14,479
Likes: 805
From: Blunt, South Dakota
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker
I wossed out
i took it to my Works mechanic just for diagnosis and I feel like an idiot it was super simple a transmission line was leaking enough fluid to the point that it was so low it was slipping when it got too warm he found the leak fixed the leak topped it up and it seems to be fine but we won't know until I go to work tomorrow
i took it to my Works mechanic just for diagnosis and I feel like an idiot it was super simple a transmission line was leaking enough fluid to the point that it was so low it was slipping when it got too warm he found the leak fixed the leak topped it up and it seems to be fine but we won't know until I go to work tomorrowIn this case, I'm sure we would have gotten there eventually by tracking down and eliminating your codes on a one by one basis, but I get that you felt overwhelmed by it, and need your ride for work. So don't kick yourself too hard. Also sounds like you know a good mechanic, so that's a bonus.
Now that you have a service manual though, you can start using it by doing basic maintenance items as they arise. Win=win.
Well...mea culpa: I'm old enough and know better; fluid level should have been questioned up front.
You may want to consider making a daily routine of checking the vehicle over, especially fluids.
Keep us updated on codes. Obviously the fuel pump code is unrelated to the trans codes.
You may want to consider making a daily routine of checking the vehicle over, especially fluids.
Keep us updated on codes. Obviously the fuel pump code is unrelated to the trans codes.
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Joined: Feb 2011
Posts: 14,479
Likes: 805
From: Blunt, South Dakota
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker
If it's throwing a code, though, you'll have to address that before your emissions test in CO. They will fail you for a CEL. My advice there is hold off until it's a bigger issue, or you need to do it to pass emissions.
Keep us updated on your situation!
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Joined: Feb 2011
Posts: 14,479
Likes: 805
From: Blunt, South Dakota
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker


