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Non VW Group Diesels This section is for discusion of Non VWGroup Diesels.

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Old January 24th, 2020, 16:02   #1
tomo366
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Default Jeep Grand Cherokee Eco Diesel



Got this one last week 2015 Jeep Grand Cherokee EcoDiesel
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Old January 24th, 2020, 17:56   #2
eli
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Nice!

I got An 019 terrain diesel on January 2 . Very nice so far.

Selling 017 cruze diesel stick to a buddy, because the mpg is too good, may as well go large.
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Old January 24th, 2020, 18:01   #3
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Quote:
Originally Posted by eli View Post
Nice!

I got An 019 terrain diesel on January 2 . Very nice so far.

Selling 017 cruze diesel stick to a buddy, because the mpg is too good, may as well go large.
I have my 2015 Jetta SEL TDI loaded Stick Car , and my 2014 BMW 328D XDrive! And now My Jeep 2015 Jeep Grand Cherokee Overland EcoDiesel
Love it!
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Old January 25th, 2020, 14:29   #4
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Very nice, Tomo.

How many miles on it?
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Old January 25th, 2020, 14:56   #5
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Originally Posted by andreigbs View Post
Very nice, Tomo.

How many miles on it?
67 K 1 owner loaded AIR suspension, 8.4 screen Uconnect Pano Sunroof 20inch wheels
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Old January 25th, 2020, 16:12   #6
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She’s a beauty, enjoy it.
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Old January 26th, 2020, 09:09   #7
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The diesel Jeeps have always intrigued me a bit.

Hows the reliability on them and what do you guys see as real life MPG's?
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Old January 26th, 2020, 09:28   #8
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Only had it a week....will let you know
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Old February 3rd, 2020, 14:38   #9
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Just got home this afternoon with a 2005 Jeep liberty CRD, 2.8l common
rail with a gt2056v Garrett turbo. 1 owner, very well maintained, a few
basic mods and great documentation on all work.

246k with a rebuilt auto tranny, runs great. I'll get some pics up soon.
TB was done 45k ago, but 5 years old. I'll get her registered,
PA inspected, and have a good look underneath. Drives good!


Should be a good tow vehicle, upgrade from the teardrop that the Golf
pulls.
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Old February 8th, 2020, 20:11   #10
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Default First Impressions

We've had the jeep a bit less than a week, but it's shaping up nicely.The front tires were in poor shape, so I bought a complete set of Generals and swapped one of the good rears onto the spare.That exercise turned into a drama, knuckleheads with impact guns had over tightened all the lug nuts. These are a "capped" nut, and some of the nuts had the caps busted off. So two different socket sizes, an 18 and a 19 to remove the nuts. New set should be here Monday. And one nut had to be drilled out and the stud replaced.



With the wheels off it was clear the inner pads on the front discs were starting to seperate, so off with the calipers, and while we're there, new discs. It had been sitting for 6 months or so. Previously the PO had been using it to commute to work, so lots of highway miles and 246k on the clock.


An engineer, hehad all records of maintenance, including a couple of key mods. CCV running to a Provent catch can system, and by unplugging the MAF, effectively deleted the EGR system. The CEL that pops up on starting is gone within a minute or so, he has a OBD scanner permanently plugged in that deletes the code. Haven't had time to really investigate exactly what it is, but it certainly works. Last TB was done 4 1/2 years ago, receipts included, and 45k miles. I'll have to investigate whether it has an age related change recommendation. I think I'm safe running it for another year and a half, kit sourced from IDparts.


Thankfully the front suspension was solid, ball joints, tie rod ends etc. No rust underneath, it spent it's whole life just south of the rust belt. And the owner always garaged it, and kept it clean. Said he never off roaded it.
The Chrysler auto transmission has known problems, the torque converter shudders going 4th to 5th (overdrive) circa 1900rpm. I believe that it's basically a gasser tranny that doesn't take in to account the low rev torque of the diesel motor. Shift points throughout the range are too low.


I've taken to hitting the overdrive on/off button, which cuts out the 5th, and also lifts the revs before shifting in the lower gears. Leaving it in 2nd around town with traffic and lights makes it much more controllable, you've got some engine braking. Into drive with OD off deals with country roads, once over 55 hit the button for OD 5th and now you're cruising. Since developing this overall strategy, shifting the auto, no shudder whatsoever, and now I've got some engine braking. Engine is running in the low 2k rpm range instead of the high teens. Same way I drive the TDI, rev the engine out it a bit more than "normal". Don't lug the diesel!, they don't like it.


Garrett GT2056v is I believe a VNT like the TDIs, certainly gets the 2 1/2 tons moving right along from 2500 to 3500, surprisingly quick when pushed. I can see why people like it offroading, it's got some grunt. And very comfortable at 70 on the highway, a real crossover.


It's got a couple whistles and bells, but not overburdened. I'm hoping the gas consumption computer is right, showing 26.5 around town. I'll be happy if it gets low 30s on the hwy. Body and interior very clean, garage kept and kept clean. Mechanically very good, motor sounds great, I've got rear brakes discs, pads, and a rebuild kit for the parking brake on the way. Muffler has been deleted with CAT in situ. Good price at $3900, already got a grand going in to it, but that's standard for any old used car to get her up to scratch in my view.


Got a 2" receiver hitch for the factory mount from Walmart, $20, and bolted it on with a nyloc nut. With the spare on the rear door no chance of getting taken out at the shins with the protrusion.
Had the 4WD running in the heavy rain on some country roads, haven't quite figured out what the "part time" 4wd does yet. Smooth shifting once tranny warmed up, should be great in snow.



Done some digging for Jeep forums, found a couple, but nothing as active as Fred's here. Apparently only ~ 12k imported 05-06 to the US, but rumor has it they were popular in Canada. Some used parts on Ebay, I'll have to talk my local injector guy if he knows anything about the fuel system. Idparts has the turbo for $1k. If I can keep the motor going for another 100k I'll be happy. DOHC 2.8l, VM, lots of them in Europe apparently, I'll have to talk to Frans about it. Don't know how feasible a manual swap would be.



The tranny was rebuilt a year and a half ago by the PO, transferrable 1.5yr left on the warranty. I feel much better about it after the last 2 days of playing with the shifting. Don't push it, and I think it'll be fine for my needs, got the Golf to hoon around in.
















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Old February 10th, 2020, 07:23   #11
andreigbs
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Nice work getting it caught up on maintenance and repairs out the gate. It should serve you well.

Regarding the part-time vs full-time 4WD: on our older Grand Cherokee I remember the full-time 4WD basically allows for the diffs to be open so you can slip some of the front and rear wheels as needed, and this setting also allows for normal speeds on the road.

The part-time 4WD was only to be used for slower speeds and off-road where it locks the front and rear diffs and splits the power evenly between front and rear. It was not to be used continuously, just to help with extra grip.

I'm sure someone will chime in with a more technical answer soon.
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Old February 10th, 2020, 13:55   #12
Rob Mayercik
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Quote:
Originally Posted by andreigbs View Post
Regarding the part-time vs full-time 4WD: on our older Grand Cherokee I remember the full-time 4WD basically allows for the diffs to be open so you can slip some of the front and rear wheels as needed, and this setting also allows for normal speeds on the road.

The part-time 4WD was only to be used for slower speeds and off-road where it locks the front and rear diffs and splits the power evenly between front and rear. It was not to be used continuously, just to help with extra grip.
Correct, in a "part-time" 4WD mode, the front and rear driveshafts are locked together with no differentiation. Must not be used on high-traction surfaces (pavement).

"Full-Time" 4WD mode has a center differential inside the transfer case, so it's safe to use on any surface in this mode.

The KJ-Series Liberty (what you've got there, Russell) offered the same two 4WD systems as the XJ Cherokee that preceeded it:

If your transfer case shifter offers only 2Hi-4Hi-N-4Lo, you have the Command-Trac (NP-231) Part-Time 4WD system.

If your shifter shows 2Hi-4Hi-4Full-N-4Lo, you've got the Select-Trac (NP-242) system, which has a full-time High-Range 4WD option. 2Hi,4Hi, and 4Lo on this case are the same as in the Command-Trac case and thus should only be used on low-traction surfaces.

For both cases, you can shift between 2Hi-4Hi-4Full while moving at pretty much any speed (technically the owner's manual says only up to 55mph, but I've pushed that a little in my XJ). For 4Lo, the process is as follows:

1. Slow to 2-3mph or less, but still rolling slightly
2. Transmission to neutral
3. Transfer case through Neutral into 4Lo
4. Transfer case back into gear

Getting back to high-range would follow the same steps (slow to near-stop, to neutral, change tcase mode, back into gear).

All of this is in the owner's manual (which, given your description of the previous owner, you probably have).

Also, since it sounds like you plan to a lot of the work on this yourself, definitely invest in a Factory Service Manual (around $100). I did this for my 92 XJ, and while I'm no expert wrench, it's more than paid for itself over the years. Light years better than a Haynes or Chilton.

As to the manual swap, some of the 2.8L KJs sold here in the States did have a manual trans - someone I know in Colorado through work bought one with a stick, and loves it. A quick Google search indicates that the factory used the NSG-370 Six-Speed trans behind the 2.8, so there's probably a couple out there in in the salvage yards,
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Old February 10th, 2020, 17:56   #13
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Many thanks for the input gents! We've had some adventures already
with tires. I ordered the stock size but my set must have been on the
bottom of a stack. Trying to get them to install on the original 16x7 rims
was a no go, beads were collapsed in. So we went old school, my trusted
guru came back with a can of ether and we proceded to blow them into
place. Wowowow! It worked! We did go outside in the parking lot,
and they certainly did jump.

After wire brushing and chipping the rusty wheel mounts, and
carefully torquing every nut to 85'#s, a day later and maybe 20 miles, to my horror
there was a tic tic noise coming from the front. It got worse as I headed
for my guru's shop. A quick call and he said "Did you check the lug nuts?"
But I just torqued them 2 days ago! I was about to limp the next 5 miles,
luckily still had tools aboard, and thought, ok, I'll check 'em. Ayup!
Lugs were loose on the front tire that had the stuck nut. I would have
found out if the new lugs had arrived today when they were supposed to.
Noise now gone, made it to the shop without incident. After discussion,
it was clear that rust, or the lug stud not fully seated, had created just
enough space for vibration to start on the left front wheel, counter
rotation to the RH thread. Also the spec is 95#s, I'll adjust the wrench.

Got the PA title today in the mail, somewhere along the paperwork chain,
it got listed as "gasoline". Back to AAA to make a correction, just the kind
of thing that might bite you down the track with PA demanding an emissions
sticker. None here for diesel.

The onboard mileage computer seems to be working, dropped back to
25.5, and it does vary, so it's reading something. Perfectly acceptable
around town, and I'm adapting to shifting the auto.

The motor seems to be freeing up, though I'm not quite ready for a road
trip yet, have to develop some confidence with it before venturing very far.
Certainly starts ok with only a minimal pigtail showing first thing
in the morning. It's got a label on the motor about ceramic glowplugs.
and it had the Jeep "fix" for the problematical shudder of the torque
converter, from what I can gather, they detuned the motor a bit,
160hp > 150.
Now that I've developed a workaround for that, I'll not worry about
it.

Thanks for the explanation of the "part time 4WD", I do have the manual
and have been studying, but other than tying the axles together, I see no
real reason for the option yet. The fulltime 4WD with both diffs running
makes sense. I'll need a genuine offroad surface to test the differences,
or, heaven forbid, a good snowstorm.

My friendly guru I'm hoping will let me do the rear brakes myself,
I "helped" with the tires and fronts, learning heaps in the process.
Pay cash for his work, etc, and having his expertise when problems
come up is well worth the money he charges me. I've only ever been
a mechanic of necessity, but I find I can get interested in diesels.
Cheers!

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Old February 11th, 2020, 06:26   #14
Rrusse11
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"If your transfer case shifter offers only 2Hi-4Hi-N-4Lo, you have
the Command-Trac (NP-231) Part-Time 4WD system." Rob

That's the one! And I'm getting a handle on the differences, part time is
indeed intended for occassional slippery surface use. If that snowstorm
hits, use it for getting going, and then use fulltime for driving around in it.

I've managed to find a manual online, which I've downloaded;
http://colorado4wheel.com/manuals/Jeep/KJ/

Got an oil change kit and a new MAP on the way, the PO made a point of
telling me to clean it regularly. I'll swap the old out and have a clean spare
on hand. Service interval on the oil is 5-6k, although I'm tempted to run
it 10k like the TDI. Don't know if the "truck" oil is really any different,
I did manage to find a gallon of Rotella T6 5W-40 at the local Walmart.
The oil pan has a valve installed, which my guru shuddered at, he doesn't
like the possibility of it getting knocked off. It does need the skid plates
put back on, not that I bought the vehicle for offroad use, but any kind of
oil pan protection is a good thing in my book.

The manual swap would be a good thing to do, but the Significant Other
won't drive them, and it's supposed to be "her car". She's comfortable
driving it, I'll be sure to impress upon her the cautions on the 4wd system.
She allowed as how she's always wanted one, but her mechanic father
wouldn't allow it, said she'd likely flip it. Growing up in the snowbelt,
Maine, 4WD was a desired option.

I'll carry on with the full service, the rear brakes will be interesting. The
parking brake has shoes on a mini drum as part of the rotor.

I'm assuming the TB has an age limit like our TDI's. Got good documentation
it was done 4.5yrs ago with idparts quality kit, 45k. So I reckin I'm good
for at least another year and half. Good video on youtube about the job.
Involved!
I'll get a hold of some quality synthetic gear oil for the diffs and axles
and change all that. Fingers crossed that for it's low mileage intended use,
it'll keep going for a while. At least all the running gear is easily
sourced, and the more I listen to the motor, it's got a chance of going
another 100k without too many issues.
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Old February 11th, 2020, 08:03   #15
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Quote:
Originally Posted by PeteZ06 View Post
The diesel Jeeps have always intrigued me a bit.

Hows the reliability on them and what do you guys see as real life MPG's?
Quote:
Originally Posted by tomo366 View Post
Only had it a week....will let you know
That's the same 3l diesel I have in my Ram, although I don't remember if the Jeeps got the 8 spd tranny. Engine can have some issues, but then we're used to that! Make sure to take it in for the updated AEM flash. Supposed to be an improvement over the original EPA mandated crap. At 34k miles, I'm around 22 mpg lifetime with best tank at 27.
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