|12-18-2014 05:35 PM|
|12-18-2014 12:08 AM|
the auto in a ZJ is a 42RE. The auto in the 03+ TJ/LJ is a 42RLE.
only one letter difference, but they have different roots and are different trans.
|12-17-2014 11:46 PM|
I have 124k with no issues except leaking tranny pan gasket fixed at 89k. I hit WOT 2-3 times every time I drive it. Very generous with throttle and intake really help. I believe my Jeep is making a little more power than most so I have no issues with gear hunting or highway use. I don't leisurely drive around either, I hit it quite hard from a stop light and beat it up on the back roads. Haven't had a problem yet, actually no problems mechanical wise at all yet. Ran it 18 times at the drag strip one night and drove it home 2 hours afterwards. Must be just bad batches out there.
EDIT: oh 2006 Wrangler
|11-04-2014 12:20 AM|
|11-03-2014 11:58 PM|
|11-03-2014 11:35 PM|
|05LJTampa||Bought my b&m cooler for $55. And learned how to properly run the plumbing after doing it backwards the first time lol. Mine isnt as beefy as unlimited04 one out of a 65' motorhome but it does the job and keeps me between 165-180 tops even in hot fl summers and traffic. I welded a bung in my pan for a sensor too.|
|11-03-2014 11:21 PM|
Thanks for the replies.
I should have done that right after I bought it new but I didn't ( aux trans cooler ). I just
knew that trans's aren't as tough as they used to be ie TH 400, C6, 727 and I service trans out of that train of thought. My usual service interval l for engine is 3500 to 5000 miles and 2 to 3 times a year. Also the drain plug I put in the trans pan makes it easy to rotate out the ATF+4.
Shift points do suck, but I am used to them. Need to add a cooler even now.
|11-03-2014 11:19 PM|
But the 42RLE is still in my Jeep.....for the moment.
|11-03-2014 10:48 PM|
|05LJTampa||Aux trans cooler is the first thing i did after seeing 3 others i was with overheat their tranny offroading. You change your trans fluid every oil change? That would be every 6 weeks for me! I changed my fluid and filter at 60k and once again just fluid since i installed the cooler. Im at 72k now|
|11-03-2014 10:30 PM|
|CtacTj||WOW! This is an old thread. I'd like to revive it to find out what the max mileage you got out of your 42RLE trans and what you did for the longevity. Service intervals, how hard you run it on road and off, etc. My Jeep, 04 X model 6 cyl. 3.73 gears, 30x9.5x15 tires. Mostly street driven, no hard offroad. My experience: Drain plug install, filter, fluid at first service at 25,000 mi. Every engine oil change, drain and refill trans, every 25,000 mi.drain/drop pan filter change. Filter and gasket kit from NAPA and ATF+4. Just recently found what i consider fines-non metallic in pan, minor metallic fines on magnet and a few large fines @ 1/32'', looks like bushing material. Mileage now at 117,000 miles. Shifts and drives good other than normal issues 42 RLE's have. What"s your experience? Regards.|
|08-23-2014 05:20 PM|
|98whitelightnin||With 185k miles and a rebuild at 80k mine does good for the most part. It doesn't want to shift to 1st sometimes and will take off in 2nd. It's been on a mail route since new and when I got it a few thousand miles ago, the fluid was burnt. I flushed the old ATF and replaced the filter, I also bought a solenoid pack but never installed it.|
|08-23-2014 04:25 PM|
|08-23-2014 12:46 PM|
(and I don't care how old this thread is! Its still relevant to my 2005 Jeep!)
|04-12-2012 08:28 PM|
I have a 42rle transmission too in my '07 Wrangler, only lasted 65k miles. I don't even 4-wheel in it, drive very conservative and obviously don't put that many miles on it, and I kept up with all of the recommended maintenance, including transmission checks. I called Chrysler and they took no responsibility for it. I was the second owner and that somehow lifted them of all responsibility. I bought it with only 17k on it so I'm not sure how that factors in much. Needless to say, I'm not impressed with either Chrysler or their support.
|03-22-2012 06:40 PM|
|Jerry Bransford||Not to mention the rig driven by John Currie of Currie Enterprises and Gerald Lee of Savvy Offroad that won the Every Man competition at King of the Hammers was running a 42RLE transmission.|
|03-22-2012 04:35 PM|
|Barrie||You do realize this thread is almost a year old?|
|03-22-2012 04:33 PM|
Bought my used 2004 Jeep Liberty about a year ago. Started to notice an odd shift from 2nd to 1st at a rolling stop & a slip i9nto a thud in 1st. Oddly enough I can't make it do it at anytime, It's like it has a mind of its own. Sometimes when passing a car & it kicks down a gear, before it shifts back to normal gears it revs out the tachometer. This thing is nuts. I have replaced filter, solonid, sensors, took off battery cables for 15 min to hopefully reset any stored adaptive learning or memory in the computer. No results & the same issue is ongoing. Its more annoying than anything. I was told I don't have the liberty with adaptive learning & no "posi" in the rear differential.
Reading forums like crazy trying to learn more before I sink any money into a transmission that seems to run fine with a few qwerks. 2 Jeep dealerships stated it needs to bew rebuilt. After reading about people rebuilding them & still having the same issues, I can't say I agree. Also when changing the filter, there was some fine debree, (no chunks of metal) on the magnet with 140,000 miles I think there would be some.
|04-07-2011 01:40 PM|
|Rubicon2||89,000 plus miles on mine without any problems. I have no complaints with the 42RLE.|
|04-07-2011 01:38 PM|
I've had lots of issues you describe. I've been saying the 42RLE is crap for many years now. I've even asked JeepEngineer's directly why they can't give us a TSB or new prog to make the shift points better.
It's shifted link crap since I drove it off the lot brand new. I've complained to the dealer about it since day one. I've had the current TSB applied, the tranny reflashed & all the latest updates done by the dealer many times. It caught fire around 12k miles & was partially rebuilt. It was totally blown and needed a complete rebuild at 50k, under warranty. Shifted fine for a 42RLE, yet all the clutches were shot and most of the big snap rings were f'ed. In fact they couldn't even find one, it was ground into powder. Only piece left was stuck to the magnet in the bottom of the tranny, and was about 1/10th the size of a penny.
I've even contacted B&G tranny programming, who claims to have a reflash for the tranny. Costs upwards of $1000, but over the past 3+ years, they have never answered their phone nor replied to my half dozen emails.
My conclusion has been to throw gears at it. 4.88s with 33s isn't too bad on the highway. 4.56s with 31s would be good too. 5.38s for 35s. Thats the best you can do until someone reliable comes out with a better program/flash.
The reason this tranny sucks so bad is three fold.
1. It was never designed to be behind a 4.0L in a Jeep with aerodynamics of a barn. It's designed to be a front wheel drive tranny in smallish aerodynamic V6 vehicles. Minivan's, coupes, sedans, etc.
2. A sonic reasonance issue gives a very annoying drone noise in overdrive due to the firing order of the 4.0L.
3. It runs HOT, fluid/tranny damage hot. Several dead 42RLE are a testiment to that, including mine. To reduce heat and improve gas mileage for EPA regs, the 42RLE locks up the torque converter and tries to find OD if at all possible. That huge drop in the RPM's makes the 42RLE bog down, and if you have the cruise set or intend to maintain speed, the 4.0L/42RLE starts bouncing between high RPM 3rd gear and low RPM OD, shifting multiples times a minute (usually every 10 seconds).
Every other 42RLE in a Jeep - KJ, JK, whatever - all got a big factory tranny cooler. the TJ did NOT.
To fix the tranny, you need a big tranny cooler mounted in front of the radiator, better gears and much better programming. Only two of those are possible right now.
|04-07-2011 12:21 PM|
I have new axles and 4.88's going in, along with a bunch of other stuff. It is as low as I can go with a D30. Hopefully it will help this problem.
There are many 42rle threads abound on many forums. Unlimited04 has some great info on them. What it comes down to is that the 4.0 does not have enough sack to run this tranny. Maybe a V8 swap???????????????
|04-07-2011 12:16 PM|
|Jerry Bransford||The 42RLE's problem is nothing more than its extremely steep overdrive ratio that drops the rpms too low. Guess whose fault that is. The all-knowing all-liberal EPA who constantly pushes auto manufacturers for ever increasing mpg ratings. That OD ratio is simply Chrysler's attempt to help boost the mpg even a tiny amount for the required EPA tests and CAFE requirements which simply means the overall fleet's average fuel economy.|
|04-07-2011 12:04 PM|
|04-06-2011 03:33 PM|
Besides overdrive being geared way too high, the only problem I have had with my 42rle is the plastic shift interlock rod breaking. It has happened to hundreds on the forums. The popular forum fix is a chinese chopstick, or plastic coathanger cut to the length of the broken piece. Jeeps answer is buying and replacing the entire shift mechanism with the same faulty part inside. I am sure hundreds of owners that do not read the forums have had to spend alot of money to fix this on their own.
Why would Jeep want to change that?
IMO, this is a safety issue as (depending on when it breaks) you cannot get it into park and get the key out. Or you can't get it out of park. (unless you are mechanically inclined enough to pull the PRND321 cover off and manually do it.)
You also cannot get it into low (1st) gear. (Think about trying to crawl down a steep mountain trail in 4lo, only able to use 2nd gear on an automatic!)
There ya go. See what you can do. Good luck with that.
|04-06-2011 12:20 PM|
|coolbreeze||My 42 RLE works as expected. Hope this helps|
|04-06-2011 10:56 AM|
|04-05-2011 06:25 AM|
|04-05-2011 12:56 AM|
|anthonyrini||I have the e-mail adress of the CEO of jeep I have been in contact with him via e-mail and if I get enough people with the same or similar issues I'm going to present him with this problem the current lawyer that I'm using is Todd friedman who works in a law office in California. My voice will not go unheard no company can knowingly have a product that they can't fix especially under warrantee. California state law states that any vehicle that is under a warentee repair if the deductible is paid the vehicle must be in proper working order. With warrantees there has to be a garenteed solution or the California lemon law will take affect and the vehicle must be purchased back and reparations paid at a minimum of 1000.00 per day with out vehicle in proper working order. Also a minimum of 5,000.00 must be paid to the victim.|
|04-04-2011 10:57 PM|
I can appreciate your effort but unfortunately it will not even be heard by Jeep. Unless NHTSA issues a safety recall, no mechanical problems such as
OPDA, 42rle tranny issues, or even the fuel overflow problem that many have, including mine which seems like a safety issue to me, they apparently don't see it that way , nothing will be done.
|04-04-2011 09:39 PM|
05 automatic transmission
Now I want to bring to jeeps attention the absolute fail that they put out with there 42rle transmission. Please anyone who has had a problem with the shift points or any other problem with this automatic transmission state the problem and the vin, year, make, and model for the veichle. I'm going to present this to jeep and you guys will help jeep step up there game and solve the problems with it.
Fellow jeep owner
Alone we are nothing but together we are strong.