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post #1 of 57 Old 06-19-2021, 11:44 AM Thread Starter
tburger88
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Greetings - first timer here. I just paid $2098.00 for a 2000 Cherokee SE 4D 4WD with 165K miles on it. Listing indicated mine dents and scratches and a mechanical issue. Carfax had 1 owner, no accidents, and regular service. If I had to guess, the owner had to get service 2 years ago to pass emissions test, then failed it again in May of this year, selling the car to Peddle Llc instead of throwing more money at it. I may need your guys help in nursing this XJ to health - especially if the mechanical issue turns out to be major or the rust looks really bad. First jeep ever for me. I like to buy old salvage Hondas and rebuild them. The carfax makes it look like someone babied this XJ then couldn’t afford to keep it going and couldn’t diy. I forgot to mention: this car lived in Frederick MD it’s whole life so I’m worried about rust!!!

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post #2 of 57 Old 06-19-2021, 05:43 PM
ravenworks
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First thing you need to do is square away the battery

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post #3 of 57 Old 06-19-2021, 07:09 PM
Fourspeedman
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It looks better than mine!

Mark in Queens- Home of Spiderman and the Ramones
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post #4 of 57 Old 06-19-2021, 08:49 PM Thread Starter
tburger88
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Originally Posted by ravenworks View Post
First thing you need to do is square away the battery
Lol - no doubt!
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post #5 of 57 Old 06-19-2021, 08:51 PM Thread Starter
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Originally Posted by Fourspeedman View Post
It looks better than mine!
I’m seriously worried about the undercarriage
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post #6 of 57 Old 06-24-2021, 12:25 PM Thread Starter
tburger88
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I finally got her! The good news: almost no rust underneath, but I only looked while it was up on the vehicle transport. Even the rocker panels look rust free. Bad news: she throws code p0303 - cylinder 3 misfire. As long as the block itself isn’t cracked, I’m ok with fixing the other potential problems. As long as the cylinders themselves aren’t toast.
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post #7 of 57 Old 06-25-2021, 02:17 AM
Ralph77
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Don't get all worried just yet.
While a lot of times I believe a misfire code is just the symptom of an underlying problem sometimes it is not.
Had a P0304 in my '00 a couple years ago.
Figure simplest thing first.
Pulled the plug, looked fine, but replaced it anyway.
Been fine ever since. LOL.
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post #8 of 57 Old 06-25-2021, 03:34 AM Thread Starter
tburger88
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Originally Posted by Ralph77 View Post
Don't get all worried just yet.
While a lot of times I believe a misfire code is just the symptom of an underlying problem sometimes it is not.
Had a P0304 in my '00 a couple years ago.
Figure simplest thing first.
Pulled the plug, looked fine, but replaced it anyway.
Been fine ever since. LOL.
You’re totally right. This could be that heat soak issue, which is a 6$ Fix. I’m going to tear down the engine anyway since it has almost 200K miles and that notorious cracking head. I wanna see exactly how beat the engine is.
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post #9 of 57 Old 06-25-2021, 05:56 AM Thread Starter
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Just started her for the first time. Engine sounds good at idle, revs nicely. I erased the code before starting and no codes have been thrown yet. Can’t drive her because no tags. No smoke from tail pipe. As engine starts to warm up I hear a very very slight knock that goes away when I rev. It’s barely noticeable. I’m not accustomed to the sound of a normal and healthy 4.0 I6 so is that normal? Goes into and out of gear nicely and in park I can shift between 2H 4H and 4L smoothly. But no lights came on to show that I’d shifted into 4WD - is that normal? All I see on the dash - which is minimal with no rpm gauge even - is “part time” and “full time.” They did not light up. Tried driving in driveway in 4H and 4L. Some grinding noise from transfer case when switching into h or l. L wanted to pop back into N. Also I don’t know the procedure for shifting into 4WD; I should read the manual 😬 radiator fan came on at just over 100C. Coolant looks clean - no oil. Shifting between P D and R gave slight lurches but nothing major and no clunk noise. It’s an Automatic btw.

Oh one last thing: short and long term trim could be better. One of them stayed at just over 14% fr a while and the rest fluctuated between 5-9%, mostly negative I think. Srry for the long post.
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post #10 of 57 Old 06-25-2021, 08:03 PM
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Why tear it apart? You just got it! What oil pressure? My XJ has 180k and the 0331 head is fine so far. Just don't let it overheat. Mine rattles at start-up too then gets quiet when all warmed up. Every misfire I ever had was cured by a new injector. So do the spark plugs, oil, coolant, the usual stuff, and keep your fingers crossed.You may have found the diamond in the rough.

Mark in Queens- Home of Spiderman and the Ramones
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post #11 of 57 Old 06-26-2021, 01:30 AM Thread Starter
tburger88
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Originally Posted by Fourspeedman View Post
Why tear it apart? You just got it! What oil pressure? My XJ has 180k and the 0331 head is fine so far. Just don't let it overheat. Mine rattles at start-up too then gets quiet when all warmed up. Every misfire I ever had was cured by a new injector. So do the spark plugs, oil, coolant, the usual stuff, and keep your fingers crossed.You may have found the diamond in the rough.
Man you might be right. I’ll give that some serious thought, thx.
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post #12 of 57 Old 06-26-2021, 02:30 AM
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Quote:
Originally Posted by Fourspeedman View Post
Why tear it apart? You just got it! What oil pressure? My XJ has 180k and the 0331 head is fine so far. Just don't let it overheat. Mine rattles at start-up too then gets quiet when all warmed up. Every misfire I ever had was cured by a new injector. So do the spark plugs, oil, coolant, the usual stuff, and keep your fingers crossed.You may have found the diamond in the rough.
You took the black words out of my mouth Fourspeedman.
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post #13 of 57 Old 06-26-2021, 02:56 AM
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I got the misfire code on my 01' after I got it, I did a full tune up changed and flushed all fluids and put a bottle of seafoam in the gas tank and have had no problems since.

I also put in a bottle of Chevron Techron fuel system cleaner about every 5-6 tanks, because fuel here is such high quality haha.

01'XJ,4.0l,AW4,NP231,D30,CHY8.25,3"IROlift,Bilstei n's,IRO OTKsteering,245/70R16,NokianRotiiva AT
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post #14 of 57 Old 06-26-2021, 04:04 AM Thread Starter
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Originally Posted by OCDXJ View Post
I got the misfire code on my 01' after I got it, I did a full tune up changed and flushed all fluids and put a bottle of seafoam in the gas tank and have had no problems since.

I also put in a bottle of Chevron Techron fuel system cleaner about every 5-6 tanks, because fuel here is such high quality haha.
Ha!!! I definitely have things I know need fixing: hood latches shot, tires and hubs, shocks… not buying a new head and engine rebuild kit would free up a lot of $.
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post #15 of 57 Old 06-26-2021, 09:10 AM
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When my other 2001 XJ had the cracked 0331 head it was traced to an overheat condition caused by a leaky water pump. It was ignored by my daughter and eventually the milky oil showed up under the oil filler cap. Oil pressure had dropped too as the oil got mixed with coolant. When I got to it the oil pressure was 8psi at hot idle and yet the engine ran silently. Upon tear-down the rockers were gouged all to hell and the head had a crack right between the #3 and #4 exhaust valves. I ended up buying a new Chinese cast head, had it finish machined here, and the short block totally re-manufactured. It cost $4000 and now is running like new. So don't be so quick to change the head unless it fails a cooling system pressure test. Oil pressure is key. If you are at 10-20psi at hot idle and it rises to 40-50psi at speed you are fine. Also that was my first ever 4.0 removal/replace and I would rather chew on broken glass than go through that again. These Jeeps are a #$%^*&^%% to do that on.

Mark in Queens- Home of Spiderman and the Ramones
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