Last post on Nov 17, 2013 at 5:12 PM
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Jeep Grand Cherokee, SUV
#648 of 1100 Jeep: Trans problem or just overfilled fluid? help!
Jun 17, 2010 (9:13 am)
We have a 1998 jeep Grand Cherokee with 148,000 miles. Lately the car has been revving and the gears not catching primarily in the overdrive gear but sometimes at a lower gear as well. This problem only occurs when it is hot outside and the car itself is hot. We looked at the trans fluid which is fine in both color and smell, however it is overfilled and bubbly. I am aware that an overfilled trans can cause the fluid to be bubbly, but I am also concerned that it is an actual problem with the transmission. The mechanic does not recommend a drain and fill since it is an older car and it could be a trans problem. What should we do?!
#649 of 1100 Re: Jeep: Trans problem or just overfilled fluid? help! [trose7]
Jun 17, 2010 (11:38 am)
could be a trans prob but drain and new filters and oil is a lot cheaper than a rebuilt trans go for the cheep first
#650 of 1100 1999 GRAND CHEROKEE TRANSMISSION QUITS WORKING
Jun 18, 2010 (12:21 am)
THE ENGINE WAS SWAPPED. THE TRANSMISSION WAS TROUBLE FREE. AFTER THE SWAP THE TRANSMISSION QUIT WORKING ANY IDEA WHERE TO START.
#651 of 1100 Re: 1999 GRAND CHEROKEE TRANSMISSION QUITS WORKING [victorclesi]
Jun 18, 2010 (12:36 pm)
Look at any cables or wires that go between the transmission and other engine components like the throttle, engine computer, etc. I never pulled a transmission so I don't know how the flywheel and torque converter go together. I dropped the pan and replaced transmission filter on my truck. I was very cautious about refilling it to make sure I didn't overfill it. I observed that before fluid reached an adequate level, it wouldn't shift at all. Also, because they are physically in the way, they had to disconnect transmission lines to the cooler. If they are now leaking, the transmission would work OK when they delivered it, but loss of fluid may disable it. Remember, you must check fluid level HOT.
#652 of 1100 Re: grinding from start 99 gc 4.0L selec trac [pleight]
Jul 06, 2010 (4:11 pm)
Sounds like you have a broken motor mount, and the fan is hitting the shroud.
#653 of 1100 Re: 1999 GRAND CHEROKEE TRANSMISSION QUITS WORKING [victorclesi]
Jul 09, 2010 (7:16 am)
When you hooked up motor to trans did you make sure torque convertor was pushed back into pump on trans. They dont give you much room but this is very important item to watch.Sounds like there could be binding problem in that area.
#654 of 1100 Re: Can't shift [tommy939]
Jul 09, 2010 (7:26 am)
Hey Tommy had same problem on a 1996 4 wd trans. Turned out to be torque convertor. Drop pan and see if you have metal in it. Also upgrade fluid to ATF-4 newer trans hate dextron even if the book says you can get away with it. Hope this helps. Good trans shop can also read code and narrow down, mine completely rebuilt mine for $700.00 on bench i did all labor which is not that hard.
#655 of 1100 2006 JGC trans problems
Jul 14, 2010 (7:37 am)
Bought this 2006 Jeep Grand Cherokee Laredo with the 3.7L a few months back. During the test drive it ran smooth and shifted like a dream. It has 74K miles on it and recently started acting strange at the 1300 - 1500 rpm range. mostly with light throttle and starting up a slight grade. the tach is jumping up and down while the Jeep is surging or bucking. The dealer has looked at it twice. Re programed the computer and said it was torque shudder and just manually shift it at a higher rpm cause it shifts into overdrive too soon. Dealer also suggested a bottle of Lucas Tans fix. After adding the additive it has gotten worse. It now is making a growl or chatter noise when it's doing it's surging. I asked the dealer if a trans service would help and he said that it might be a good idea at this mileage. I see alot of other people having the same problems but what was the solutions? Or is there a solution? Thanks in advance for any advise you may have.
#656 of 1100 trans jerking
Jul 14, 2010 (10:48 am)
I read all about the Lucas trans fix and it is important to use the right one. I believe there are three types. Might be good to do a total flush that will get ALL the fluid out from the tranny and the torque convertor. The filter actually get pretty cleaned out in the process.
I have a 93 with a 6 and it does this trying to go into first gear but never fails if I manually put it into first. This makes me think it might be electrical but the solenoids can do this as well so I have been told.
#657 of 1100 Re: 2006 JGC trans problems [pacman8]
Jul 16, 2010 (12:11 pm)
I have a 97 JGC I bought in 2000 with 70K on it and I didn't have any transmission trouble until 170K this year. I serviced the trans myself 2-3 times only dropping the pan, but the filter got changed. I never did the flush. Dropping the pan is a PITA, but it's the only way to change the filter. I'd rather drain 50% of fluid and change the filter than drain 100% of the fluid. I see 100% fluid drain as a preventive measure more than a remedy.
If I really liked the car and had lost faith in repair shops, I would buy the 2006 shop manual and read the whole chapter on transmission. My manual has over 120 pages just on transmission. Read the troubleshooting sections. What can you check with the trans still in the vehicle? Cables? Wiring?
Maybe operation in 1 or 2 will help you learn more.
If the trans has its own computer, make sure the ground and power wires are OK. You need a good voltmeter.
It's a difficult situation. I believe its $500 in labor just to pull and re-install a transmission, but it seems way too soon to have to do a rebuild.
If you get it resolved, please update the thread for our benefit.