Jeep Wrangler Forum banner

Auto trans slipping?

3K views 19 replies 11 participants last post by  MikeMTJ 
#1 ·
Happy holidays to all! When I come to a stop then go again before I actually stop it feels like the trans bangs. I'm not sure if I should take it to a trans place or if that's normal and ok. Thanks
 
#5 ·
did they change the filter or just flush it?
 
#4 ·
Not sure if it will help, but I think lucas makes a product for slipping that I have heard helps.
 
#7 ·
To do it properly you really should change the filter especially at 60,000 miles.
 
#20 ·
Proper maintenance of an automatic transmission would be flushing it and changing the filter. I flush mine and change the filter every 20,000 miles due to what I use my vehicle for.

I have mine flushed through a local shop that is independently owned. They are a shop that only works on transmissions, and has been incredibly reliable.
 
#10 ·
I would not add any additives to the ATF. The first thing I would do is properly check that the transmission's ATF level is full. Start the engine, warm it up, shift throught the gears and then leave the shifter in Neutral while you check to make sure the ATF is up to the full line. The transmission will slip if it's not full of ATF.

Also, hopefully they filled it with only ATF+3 or (better) ATF+4 when it was flushed. No other kind of ATF can be used in any of our Jeep automatic transmissions.

Also know that simply dropping the pan leaves around 6 quarts of the old ATF behind inside the cooler, torque converter, and lines. Personally, I don't believe that flushing all of the old ATF out is a bad thing to do. That's what I first did to my new/used 3-speed automatic I converted my last TJ to a couple years ago.
 
#12 ·
I'll check the level this weekend and also check the receipt and see what kind of fluid and how much was put in. It wasn't a sloppy lube but it wasn't a transmission place either. Hopefully it's an easy fix like that. I did see on another thread not to use any additives. Not sire if I should put Lucas in it or not? What do you think?
 
#13 ·
The problem with an automatic transmission is when they start to act up it's usually a warning sign of bad and expensive things to come, I would do all the checks the above posters have mentioned and I would also certainly scrutinize the receipt to make sure they indeed put the proper ATF in because if they didn't your going to have to fight with them for a new transmission. I wouldn't bother putting in the Lucas because if she's going to blow an additive isn't going to help you.
 
#14 ·
Not trying to hijack but I hate makin a new thread when I could just add to a thread of similar content. Anyways my 99 auto has 143,xxx miles. Not sure when or if the fluid/filter was changed but my trans has started to slip REALLY bad. It acts like as if someone were pushing in the clutch pedal and I have to flutter the gas pedal to get it to go back into gear. I talk to a guy that his dad has done transmissions for 20 years and he said it was my clutch packs going bad and we wants $1800 to do a basic rebuild. I almost crapper my pants when he told me that. Is that approximately the going rate for a basic rebuild and do y'all agree on his diagnosis?
 
#17 ·
If the filter is severely clogged, yes. It's worth the time and epense to replace it before heading to a professional for further evaluation, esp. if routine maintenance has not been performed.

If you're looking at $2k to "rebuild", it might make more sense to just purchase a new unit instead. Add about $300 for installation, and you're back in business. Expensive, yes, but much cheaper than buying a new vehicle.
 
#18 ·
Hmmm. Well Chrysler transmissions up to i believe 2006 needs theyre bands adjusted periodically when ever it starts to shift wierd and starts to acting up. I just did my bands. I went by a haynes repair manual dropped the pan to get to the rear band torqued it down to 72 inch pounds. Backed it off 4 full turns no less no more. Changed the filter while I was in there. New gaasket put the pan back up. Filled with 4 quarts of atf+4. Now it shifts and drives like new up to 55. Then it starts to slip a bit. But I still have the front band to do so the front band adjustment should take care of it. To adjust the front band torque to 72 foot pounds and back of 2 and a half turns no more no less. I believe my 95 2.5 3speed auto has the same trans as you 4.0 tj guys double check to be sure. But i think the only difference is you guys have a deeper pan.
 
#19 ·
JD Adams said:
If the filter is severely clogged, yes. It's worth the time and epense to replace it before heading to a professional for further evaluation, esp. if routine maintenance has not been performed.

If you're looking at $2k to "rebuild", it might make more sense to just purchase a new unit instead. Add about $300 for installation, and you're back in business. Expensive, yes, but much cheaper than buying a new vehicle.
Well that settles it. I'm gonna be swappin filters and hopefully this fixes my problem.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top