Stocker Reliability Thread -
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post #1 of 12 Old 12-24-2008, 11:15 AM Thread Starter
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2001 WJ 
Join Date: Sep 2008
Location: San Francisco
Posts: 13
Stocker Reliability Thread

Hello everyone, I thought this might be an interesting thread idea. If you have a stock Jeep just drop your 2 cents!

How well has your Jeep done while being stock in terms of reliability?

2001 WJ 4.0 Inline 6: 83,000 miles, only the battery and tires have been replaced. The back liftgate no longer works (key word "properly") and the drivers side door key broke which is fixed due to cold weather.

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post #2 of 12 Old 12-02-2009, 02:25 PM
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Join Date: Sep 2006
Location: Wisconsin
Posts: 11
I have a 1997 ZJ, 4.0 L with over 123,000 miles. Tires, battery, and muffler have been replaced. I had to replace the lifters (cheap and easy diy job) on the tailgate as they no longer worked in cold weather. I also recently had to replace the tie rod ends and install a new radiator. Other than that just the routine maintenance.


97 ZJ, 4.0 L, Reese Class III/IV Receiver hitch. Dark Rosewood Pearl
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post #3 of 12 Old 12-02-2009, 02:34 PM
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1993 ZJ 
Join Date: Oct 2008
Location: Lima, Ohio
Posts: 3,377
1993 ZJ, 4.0/42RE. 161,000 miles. At 130,000 the transmission was rebuilt, and went out again at 155,000. I've replaced the transmission, torque converter, transfer case (249->231), resealed the engine, water pump, idler pulley, radiator, steering gear box, steering parts and ball joints, front and rear axles (rear axle blew up, swapped to a set with 3.73's), shocks, brakes, rear brake lines, starter, battery, TPS, IAC, CTS, and quite a few other things.

Overall I have no complaints, it's been pretty good for me. I knew what I was getting into when I bought it.

Want to swap an NP242 or NP231 into your ZJ? Here's how:

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post #4 of 12 Old 12-03-2009, 01:15 AM
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1998 TJ Wrangler 
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Location: Kamloops
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today i bought a 94 zj with a 5.2 it has 480000 k's it leaks but otherwise drives great and runs awesome (i wouldnt have bought it if it didnt run great)

way i see it too is a got a hell of a deal because of the mileage
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post #5 of 12 Old 12-03-2009, 07:06 AM
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Location: Cushing, IA
Posts: 55
I own a 1997 ZJ Limited. It has 178,000 miles, It has been in 3 accidents. I have had to rebuild the motor (5.2, spun main #2, cracked the block, new block, pistons, crank, cam, 3 angle valve job.), Rebuilt the rear axle (D44a, bearings, 1 axle), Replaced all control arms, replaced the 249 --> 242, Replaced the fuel pump due to obnoxious check valve leaking. The PO Rebuilt the Trans, had oil pump issues (i believe the source for my spun main), replaced Water pump. Overall its been a beast, I've only been left stranded once (when the main spun). I would drive it anywhere, (with my tools in the back of course ) I plan to drive it well past 250,000 with some transmission work and swapping in an 8.8 for the rear axle.
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post #6 of 12 Old 02-15-2010, 12:13 PM
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1998 ZJ 
Join Date: Apr 2009
Location: Oklahoma
Posts: 3
1998 ZJ I6 4.0 with 242 bought it july of 2008 with around 198,000 miles :/ (kinda scary) but i have never had any problems with it haven't replaced anything and It has 210,000 miles on it now lol
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post #7 of 12 Old 03-10-2010, 04:16 AM
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1998 ZJ 
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Location: ashland ohio
Posts: 73
1995 ZJ limited 4.0 257,000 miles runs like a top!
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post #8 of 12 Old 03-10-2010, 05:17 AM
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1995 ZJ 
Join Date: Sep 2009
Location: Sacramento, CA
Posts: 305
1995 ZJ Limited 5.2 152k
Has had:
Water Pump
Rebuilt trans
Tensioner Pulley
Idler Pulley
Drive Belt
after market trans cooler

rear d44a rebuilt (mostly new bearings)
driver side cv axle
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post #9 of 12 Old 03-10-2010, 09:22 AM
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1993 ZJ 
Join Date: Aug 2009
Location: Utah
Posts: 2,732
'92 4.0l 42re 183k
Just replaced the water pump, checked all the pulleys at that time and found the idler pully I haven't replaced yet was a little loose. May have been the moaning that I was hearing, so I replaced that idler pully too.

anyway, waterpump
idler pulley (2)
valve cover gasket
routine maintenance
fan clutch
front axle shaft u-joints - then replaced an axle shaft with a cv axle shaft due to warping the tone ring

bought it at 151k seven years ago. Don't know anything that happened prior.

93 red ZJ 199k 4.0. Spent more money than I should have ...
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post #10 of 12 Old 03-10-2010, 09:37 AM
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2004 WJ 
Join Date: Jan 2008
Location: Fenton, MO
Posts: 18
'04 Grand Cherokee SE 4.7 w/ 105,000 miles

2 water pumps
2 thermostats
2 fuel pumps
1 starter
1 battery
1 belt tensioner
1 pair of heads (warped) and head gaskets
1 set of timing chains (cracked guides)
1 set of spark plugs

1 annoying rattle from the rear. I think it's a shock...factory units that I will replace soon.

When the heads warped I was all but ready to give up on it. Now that I have it back and it runs like a top I LOVE it again.

Another bi-polar Jeep owner
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post #11 of 12 Old 03-10-2010, 10:32 AM
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1994 ZJ 
Join Date: Jan 2010
Posts: 537
ive got a 94 ZJ have about 263000km or 161000 miles on it. Other then a couple leaks, trashed axle CV shafts, and replacing the water pump, and battery; it runs great still
83000 miles, your still in the break-in period
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post #12 of 12 Old 03-25-2010, 07:58 PM
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1999 WJ 
Join Date: Mar 2010
Location: Nassau County, New York
Posts: 377
99 WJ Laredo, 77,981 miles. So far I've changed the battery, fan relay sensor, in dash speakers, driver side window mount (my own fault though ), joints, shocks, CPS and now only one hinge on my back window opens. Anybody want to take a bet on what will go next?

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