Jeep Wrangler Transmission


Remanufactured & Rebuilt Jeep Wrangler Transmissions for Sale. No Upfront Core Charge, Up to a 5-Year Unlimited Warranty Plus, Free Shipping!! If you own a 2018-2019 Jeep Wrangler and have been experiencing some weird behavior with your transmission, then you should find something interesting here. Wrangler JL owners have reported suspicious behavior causing their wranglers to go into limp mode.

  1. Jeep Wrangler Transmission Oil
  2. Jeep Wrangler Transmission Fluid Change
  3. Jeep Transmission For Sale

A manual transmission is just a solid piece of engineering that doesn't want to break. It doesn't care what angle you are at. It has compression braking that automatics can't touch, and when you are driving it you feel connected to your Jeep. It is a more immersive driving experience.

Jeep Automatic Transmissions Available from Midwest Transmission Inc.

Running damaged or worn out Automatic Transmission is dangerous and can cost you a lot of money.

We offer a very popular line of Heavy Duty Road Runner Series Automatic Transmission and Torque Converter Packages for Jeep, 4WD applications. Hydraulic and electronic controlled units can be found. We have a large inventory of automatic transmission and transaxles ready to ship.

What causes automatic transmissions fail

Automatic transmission failure may be cause by low fluid level, or contaminated fluid brought on by heat buildup and non metal part degradation, clogging veins in the valve body, pump and torque converter. When exchanging your automatic transmission be sure to flush the actual fluid through the cooling system including lines from your transmission to the radiator and the reservoir underneath the radiator a minimum of a few times using the correct chemicals. When adding automatic transmission fluid or changing your transmission fluid verify and make certain the manufactures recommend fluid is utilized. A person can be shocked the number of times the incorrect fluid is utilized leading to an on-slot of issues.

Factory Built Ensures Consistency, Quality and Long Life

Our automatic transmission rebuild services are performed by experienced transmission discount coupon Jeep automatic transmissionstechnicians. A transmission rebuild, also known as a complete transmission overhaul, involves the complete removal and disassembly of your transmission. Each part of the transmission being rebuilt is inspected for wear and damage. Low service expectancy components will always be swapped out no matter their condition. All the other parts that don’t have brand new potential service life are replaced with the highest quality parts available. Conformity updates are installed to enhance maker’s designs to repair issues found after the vehicle leaves the factory. Our warranty is the best in the industry 100,000 miles and 3 years.

Throughout the rebuilding of your transmission all gaskets and seals are replaced with brand new ones. All new clutch fractions are part of a complete rebuild and are always replaced during a proper overhaul, including bands, electronic solenoids seals, bushings and gaskets. Valve bodies are taken apart, cleaned out, inspected and all balls and springs are replaced. Specific attention is paid to the planetary gear set, including sun gear, annulus ring gear, planet gears and planet carrier parts showing wear are replaced.

Automatic transmission rebuilt.

To ensure the greatest level of quality we utilize the best parts and torque converters obtainable along with highly trained technicians to rebuild re-manufacture your Jeep automatic transmission. We can build your automatic transmission to your specification including heavy duty towing transmissions with robust bands and clutch frictions, shift kits and external cooling systems if desired. We provide a wide variety of torque converter options, all rebuilt units are supplied with stock/OE torque converters. Optional torque converters are available, converters to satisfy your particular stall, lockup, horsepower and torque requirements. Matching your vehicles desired performance (off road or rock crawling) using the correct torque converter specification is critical. Be sure to consult our Drivetrain expert at time of the order to enable you to get the converter required. You can extend the life span of your Jeep automatic transmission by installing an auxiliary transmission cooler either under the car or truck next to the transmission or behind the grill. One other good idea if you’re towing heavy loads is to monitor the transmission by installing a temperature gauge. We advise you install the sensing unit in the output side cooling line as it leave the transmission
headed to the radiator cooling reservoir.

We offer the following Automatic Transmission Models for Jeep 42RE and 45RF. Don’t see what you need just give us a call toll free 888-824-2012.

Part NumberTrans. ModelMin YearMax YearApplicationEng. Lt.Core DepositYour Price
T4810AA42RE19961997Cherokee 4WD$$2,040.36
4003690A245E1997Cherokee 4WD4.0$$1,595.00
T4806AAAW419982001Cherokee 4WD4.0$$2,040.36
T4805AAAUTO 5 SPEED19911996Cherokee 4WD, Grand Cher4.0$$2,040.36
400298544RE1997Grand Cherokee 4WD$$1,395.00
400326744RE1998Grand Cherokee 4WD4.0$$1,395.00
400341945RFE19992000Grand Cherokee4.7$$1,642.71
T2593AA42RE20002004Grand Cherokee 4WD$$1,763.31
400467245RFE20002002Grand Cherokee 4WD4.7$$1,642.71
400408945RFE20032004Grand Cherokee4.7$$1,642.71
T6221AA4T80E20052008Grand Cherokee 4WD, Com4.7$$2,349.64
4002596A518199319Grd Cherokee 4WD$$1,450.00
400067342RE1996Grd Cherokee 4WD$$1,395.00
400450042RLE20052006Liberty 3 Plugs LH Side$$1,395.00
T2531AA90419972002Wrangler 4WD4.0$$1,422.23

Experience – Quality parts equal long life Automatic Transmissions

If you’d like assistance with your automatic transmission or having issues diagnosing the problem give the Drivetrain expert at Midwest Transmission a call 888-824-2012 we have the answers you’ll need. Don’t see what you need or want us to build your core just give us a call, you supply the core and save the core charge.

If you own a 2018-2019 Jeep Wrangler and have been experiencing some weird behavior with your transmission, then you should find something interesting here. Wrangler JL owners have reported suspicious behavior causing their wranglers to go into limp mode. Some reports include harsh gear shifting and loss of power, while others report sloppy clutch pedals. Let’s look into it and what the possible causes are.

There nothing more frustrating than having endless reliability issues after recently purchasing a vehicle, may it be new or used. You’re still unfamiliar with the vehicle dynamics and not always sure if certain behavior is “normal” or cause for concern. Sometimes these woes can get so frustrating that you even considered selling the vehicle event though you love the brand. Whatever your situation may be, we’ll look at a few transmission issues 2018 and 19 Jeep Wrangler owners have reported online, which could give you some insight and possibly offer a solution.

Jeep Wrangler Automatic Transmission Problems

I’ve personally experienced the symptoms of a sketchy Jeep transmission when my mate and I were driving in his trusty 2018 Wrangler, feeling all cool and stuff, when suddenly, the CHECK ENGINE –FAULTY TRANSMISSION light appears. OOPS! Not something you want to see right!

All sorts of crazy thoughts immediately starts going through our minds. What did we do?

After a bit of inspection we noticed some transmission fluid dripping from underneath the vehicle. Later we also noticed fluid in his driveway. The vehicle felt rather weird like it was holding onto the gears a bit longer than necessary. And the transmission didn’t sound too healthy either. Prior to that we noticed the up-shifting was lethargic, even when on a decline, holding the revs at over 2500rpm.

What was the problem?

What we noticed was a leak somewhere near the transmission, hence the oil spill. Also, the transmission fluid was low, so that possibly affected the shifting process somewhat, causing the transmission to labor a bit.

Leaking Seals

If this happens to you, crawl underneath and have a look around the transmission to inspect where the leak is coming from? Later it was discovered by the dealership to be a leaking rear seal, which was sorted under warranty.

Jeep wrangler transmission 2018

Symptoms experienced:

  • Lethargic gear shifting
  • Holding the gear till 2500
  • Oil leaks
  • Check engine – Faulty Transmission light

Harsh Down Shifting

Bear in mind the 8-speed automatic transmission has a learning process, which records your driving style and throttle position over time. So, if you experience harsh down-shifting, like the Jeep is confused when coming to a stop, it should improve over time as the transmission control module adjusts. But it shouldn’t feel violent or aggressive when it downshifts coming to a stop or rolling and pulling off immediately.

The ZF transmission was designed to improve the vehicles fuel economy, and can achieve up to an 11% fuel saving compared to the ZF 6-speed transmission and 14% versus modern 5-speed transmissions. In General the 8speed box is smooth and should shift up effortlessly from pull-off. The 850RE Torqueflite eight-speed automatic transmission is world-known for being one of the more reliable transmissions built.

Gone are the days of crude gear shifts and jerky downshifts, so if you experiencing something similar, something’s amiss.

Fuel Pump

Harsh up and down shifting can often be put down to fuel related. Its sounds weird indeed, however the fuel supply will send signals to the ECU which will control other factors. So, in the case of a bad fuel pump which delivers weak or reduced fuel flow, it will definitely result in a reduction in power. This will cause the transmission to delay shifting to the next gear. The transmission shift points are normally controlled by outside sensors, including fuel supply and pressure. Doing a diagnostics test will more than likely reveal a faulty fuel pump fault code.

2018 Jeep Wrangler Manual Transmission Problems

If you have a 2018 Manual Jeep Wrangler and the vehicle feels underpowered and goes into limp mode it could be any of the following:

  • Fuel Pump
  • Fuel Relay
  • A clog in the fuel line
  • Faulty PCM control module

However, sometimes you get these weird issues, not only with jeeps but all modern diesels and it’s hard to trace without a diagnostics machine or with DIY inspections. It could be something completely unrelated, like an electrical gremlin. One owner reports that after the dealership replaced almost all his fuel system components the vehicle still went into limp mode. It was eventually traced to an electrical fault and a lose pin in a wiring harness.

So what are some symptoms you can look out for?


  • Vehicle goes into Limp Mode
  • start stop light goes on
  • Underpowered between gears switching
  • Sluggish behavior
  • engine vibration and shaking



Lose pin in the harness
Park Rod Recall

Early in 2018 there was a recall to replace transmission park rods on approximately 71 units.

Jeep Wrangler Transmission Oil

NHTSA warned, “If the incorrect park lock rod is installed, the transmission may not shift into ‘PARK’ and keep the vehicle from moving, increasing the risk of unintended vehicle movement and the risk of crash.”

NHTSA Campaign Number: 20V124000

Manufacturer: Chrysler (FCA US LLC)


Components: POWER TRAIN

Potential Number of Units Affected: 33,237


Cluedo film daniel craig. Chrysler (FCA US LLC) is recalling certain 2018-2020 Jeep Wrangler and 2020 Gladiator vehicles equipped with manual transmissions. The clutch pressure plate may overheat and fracture.


The remedy for this recall is still under development. The recall is expected to begin April 22, 2020. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler’s number for this recall is W12.


Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to

2019 Jeep Wrangler Transmission Problems

Jeep wrangler owners are generally very happy owners, since their vehicles don’t give them too much drama, and the drama it does give, they are generally happy to deal with as a small price to pay. However there are a few complaints from 2019 Wrangler owners.

Remember, these are not recalled or what you can really call “common” occurrences, just reports of faults owners have experienced with 2019 models.

Remember, people seldom take the time to compliment a vehicle for doing what it’s meant to, however when there is a problem, the first thing they’ll do is hop online and lodge a complaint. This could give you the impression the problem is worse than it actually is and could just be a few isolated cases or part of a batch that had a recall. It’s still good to be aware, since these can happen to you at a later stage and the owners input can assist you to diagnose the problem faster.

Without any further delay, let’s look at some reports of transmission issues only.

  1. Odd engine noises
  2. Fluid all over the undercarriage. (Leaking rear seal)
  3. Transmission noises when shifting from park to drive or reverse
  4. Clunking noise especially on a cold start up
  5. Issues with the start stop or the transmission
  6. Power losses (Fuel related)
  7. Loose Clutch pedal (recall)
  8. Sluggish performance
  9. Shakes and vibrates excessively

It’s important to isolate transmission issues with stop/start issues. If you experience any weird behavior with the stop/start activated, disable it and see if the problem persists. If it does, you know its transmission related.

If the Jeep feels like it is about to die, it could be related to the charging system, fuel system or a weak battery. Usually with fuel related issues, it’s not intermittent. Do all the basic checks like battery terminal, earth ground strap, battery health and underneath for anything obvious first.

2019 jeep wrangler start stop disable

Jeep Wrangler Transmission Fluid Change

The module installs easily under the dash, and does not disable the Security Gateway Module (SGW) nor does it take up the OBDII port. It also does not set off any fault lights, warning dings or fault codes. Check out the

The module makes no modifications to the OEM software in the vehicle at all. It also does not cause any faults. If it is removed, there is no evidence that it has been used as long as you plug the cable back into it its original socket.

Alternatively, you can do it the manual way and remove the start stop plug in the engine bay like this:



Jeep Transmission For Sale

If your jeep is giving you endless transmission issues, keep a record of the issues you are experiencing and what you were doing at the time. Your best bet is to figure out how to reproduce it so you can explain and demonstrate to your dealership.