I just sold my 4 Cyl and in the market for a straight 6. I know these are bullet proof engines but am curious as to what a good buying time is for one of these. At how many miles will I start running into problems? How many miles did you have and what, if any problems did you encounter? Thanks guys!
Bought my 2000 last Nov with 126k. It was totally rust free and on the way home from the dealer the idler pulley seized LOL!!! Dealer came and replaced it for free, 'twas a fluke since I'd test driven it already. Couple weeks later I found a leaking freeze plug, replaced it and it still leaks, just a lot slower... It's got 130k now but runs like a top, burns no oil, no tapping noise, none of the worn out engine signs. Just test drive it and check the engine over well. Over 100k will prob have leaks and such but if its smooth up to 4k rpm and no tapping at idle then it's ok. First thing you should do is a total tune up anyways to "zero" time everything for your piece of mind.
I bought a 2000 tj hard top with lift kit & 33's and it had 200,000 miles which seemed like a lot but the carfax report showed very regular and thorough maintenance and oil changes it's whole life at jeep dealership. There's only one small oil leak and it's the valve cover gasket witch is not a serious problem but I'm gonna change it any way. I've put about 5k on it with out any problems.
Bought mine with 105,000. At 120,000, two rod bearings blew, and it need a rear main seal. The motor ran well when I bought it, and checked it out with a mechanic, but the oil pressure was never right, and I changed it every 3k and it never lost a drop, but it probably either saw some rough driving, or the oil wasn't changed often enough.
Had a motor with 100k put in it. It sounds and drives like a brand-new engine, oil pressure is awesome, and after 8k, I feel confident this motor will go another 100k.
i got my jeep 14600 on it and about 6 moths ago and i thing i need a new rear main seal because it just started leaking oil not a lot but just a little bit the part is 20 $ but you can go on quadratic and get a seal kit. the kit comes with oil pan seal rear main it looks like a timing seal and some other seals and its only 45$ so if you are going to buy one for 20 than you can get the kit for a little bit more
I bought my stock, 97 4.0 with 80,000 5 or 6 years ago, it's a daily driver, now has 230,000.
Mine is no stranger to the Jeep parts counter though.
Replaced the following in the past few years:
Cooling system, always ran warm/hot replaced with 3 row radiator
Fan clutch failed
Water pump leaked
Spider gears broke
Front sway bar link broke
2 oil pressure senders
Replaced both 'U' joints
AC compressor replaced, front bearing failed
Front brake caliper sized
Fan belt idler & tensioner pulley bearings failed
Distributer plate intermittent/failed,
Retainer spring on throw out bearing broke, replaced clutch & bearing
AC evaporator coils leaked,
On the drive home from the dealership, the clutch was making an odd noise. I turned around and drove it back. They offered to either refund my money or fix it. I rolled the dice and told them to fix it...because it was love at first sight.
Same clutch in the Jeep now...11 years and about 95K miles later.
Bought my Jeep Wrangler 1 month ago. 4Cyl, 2006 33,000 miles. Came with MSD Ignition, magnaflow, lifted, 35" Tires, Ford 8.8 back axle and others. Only issue I had was it had no hand brake lines. That was 60$ to add them. And the A/C Compressor clutch died, that's 80$ to replace. So far everything else is good!
Bought my 98 five months ago at 160k. No leaks whatsoever and runs great. It did have sudden failure of the clutch and ac blower motor. I also had to replace the radiator and steering box due to degraded performance. Otherwise everything is great. Everything else I've done to the jeep has been to upgrade perfectly good parts with newer beefier parts.
This 14 year old jeep will be brand new by the time I'm done with her.