Question for Jeep Owners

Status
Not open for further replies.
Joined
Jun 27, 2009
Messages
916
Location
Hollister, CA
I am looking at a 1998 Jeep Wrangler with the 4.0L straight six and the manual transmission. The exterior looks in great shape, interior is good, but it does have 120K on the odometer. Any concerns or known problems with that year or with the mileage in general?

Thanks.
 
The 4.0 is a VERY reliable motor even with minimal maintenance. The AX-15 Transmission isn't bad either ... just don't expect sport shifts.

I wouldn't have any problem with a rust free 4.0 wrangler with 120k.

Unless you beat the living daylights out of it, or the previous owner(s) did and didn't take care of it ... I would expect 200k easily.
 
I'm with Miller....this Jeep should last awhile, and the 4.0 will likely outlast the rest of the vehicle.

Only concern, as you said, is the mileage. I'd expect the same things any other used vehicle with 120k might have going on, like brakes, hoses, fluids, etc. But again with proper care it should be good to go.
 
Originally Posted By: Miller88
The 4.0 is a VERY reliable motor even with minimal maintenance. The AX-15 Transmission isn't bad either ... just don't expect sport shifts.

I wouldn't have any problem with a rust free 4.0 wrangler with 120k.

Unless you beat the living daylights out of it, or the previous owner(s) did and didn't take care of it ... I would expect 200k easily.


x2. The mileage wouldn't scare me if its in good shape. I've seen 4.0's with almost 400k on them and still running. The '98 had a pretty solid drivetrain. Rust would be my main concern, as well as the condition of the cooling system. Otherwise I'd say go for it.
thumbsup2.gif
 
mileage wouldnt scare me at all, but expect endless electrical, vacuum, and other nit pick issues to plague you until the end of time.
 
As a diehard Jeep dude, I concur with my colleagues.

As Jeepman said, take a good look at the radiator as the factory unit had plastic tanks. Don't despair if it's going, as they are super easy to change and you can get a 3 core HD all metal inexpensively.

I'd jump at a clean 120K Jeep - if Mama would let me have one more.
 
120k should be nothing.
check to see how bad the rear main seal is leaking (they almost all leak) its not a big deal but if its bad enough your gonna want to fix it. Mine is wet with oil in the area but I don't need to add any oil during my OCIs.

start the jeep a few times. If it takes a few seconds of cranking to start then runs fine its a common problem to have the Fuel pressure regulator check valve fail, causing the jeep to loose fuel pressure while the vehicle is off and lets all the fuel drain back into the tank. The valve can be replaced but its inside the gastank with the fuel pump assembly. Again not a big deal but a pain to fix.

check the inside of the frame for rust as well. I have seen some scary pictures of frames rusting from the inside out and causing the transfer case skid to fall off while the outsides looked solid. Because its a boxed frame but no drain holes its a big problem if your in a salty area.
 
Last edited:
Originally Posted By: Jarlaxle
My only concern would be the 120K miles and not knowing if the PO cooked the clutch.


how much is a clutch?
 
I went ahead and purchased it yesterday. The body was clean with no rust, dings, or dents. The paint is still shiny, but does have some scratches - about what you would expect given age of the vehicle. The interior has no rips or tears, the seats are still tight, not loose on the seat tracks, and the carpet looks good for it's age. The engine sounded good, no lifter noise and no obvious leaks other than the rear main seal. The transmission, transfer case and axle had no whine, clunks, or hard shifting. The clutch engagement was smooth and there was no slipping or chattering. The tires were BF Goodrich 31x10.5 and are brand new. The Jeep also came with full doors and a hard top.

When I picked it up, the heater would only send air out of the defroster and there was a slight miss at idle when the engine was warm. I found the vacuum line going to the vacuum reservoir was cut/broke. I quick trip to the hardware store and $3 later both problems were fixed!

The only issues I see are the before mentioned main seal leak on the engine, and a slight weeping leak on the pinions of both axles. I also see what might be some wetness on the bottom tank of the radiator. I've got to verify this because the place I bought it from will replace the radiator under warranty.

So far all I've got planned is the usual change all the fluids and filters, do the tune up, and replace the drive belt, tensioner, and idler.
 
Nice. Looks like you made out well.

Pinion seals are pretty easy to do. There are a bunch of decent write ups you can find with a gOOle search.
 
Originally Posted By: Sunnyinhollister
I went ahead and purchased it yesterday. The body was clean with no rust, dings, or dents. The paint is still shiny, but does have some scratches - about what you would expect given age of the vehicle. The interior has no rips or tears, the seats are still tight, not loose on the seat tracks, and the carpet looks good for it's age. The engine sounded good, no lifter noise and no obvious leaks other than the rear main seal. The transmission, transfer case and axle had no whine, clunks, or hard shifting. The clutch engagement was smooth and there was no slipping or chattering. The tires were BF Goodrich 31x10.5 and are brand new. The Jeep also came with full doors and a hard top.

When I picked it up, the heater would only send air out of the defroster and there was a slight miss at idle when the engine was warm. I found the vacuum line going to the vacuum reservoir was cut/broke. I quick trip to the hardware store and $3 later both problems were fixed!

The only issues I see are the before mentioned main seal leak on the engine, and a slight weeping leak on the pinions of both axles. I also see what might be some wetness on the bottom tank of the radiator. I've got to verify this because the place I bought it from will replace the radiator under warranty.

So far all I've got planned is the usual change all the fluids and filters, do the tune up, and replace the drive belt, tensioner, and idler.


All 4.0L's leak at the rear main and it's an easy and cheap repair.
 
Status
Not open for further replies.
Back
Top Bottom