Transmission Problems

[love my commander]

Hi I am in UK, 3ltr deisel commander
I and the previous owner have transmission problems
The gear change is not smooth and sometimes it is as if it is not in gear then jerks forward.
It has had the electrical plug changed, new gear shift module and the valve inside transmission changed.

But still not happy with performance

During all this when you first switch the following message very quickly flashs up before normal display. Had to film it and slow down on computer to read

" Transmission over temp" this even when cold from over night and dealer says not dtc's showing

Milage now 17,000 was 5,700 when bought

Any thoughts or anybody had same?

Thanks

[Longbow]

Sounds like something similar that I am going through now. I have an 06; 2wd commander with 79000 miles. For the last few days when slowing down for a stop light or sign, as the xmsn downshifts it seems to "jerk" into 2nd or 1st gear. It happens about once a day for the past week. I have tried to duplicate it with different driving styles but nothing happens. When I try to manually shift down to 1st gear I feel a similar "jerk" but I dont think its only happening in that gear when in D. I have not yet had it looked at for that reason but plan too soon. If you get an answer please post it and I will do the same. Also I am in Texas now and the weather is.... Hot and Humid so I dont think it has anything to do with the problems in the earlier posts.

I have not noted the RPM when that happens and I notice no real difference in performance other then that sudden "jerk". Also, there has been no Transmission light that comes on.

[Jeepster91505]

I have had the same jerking issues with my transmission. I did some research online and found out there was a TSB for this problem. I took it to the dealership and they flashed the computer with new PCM software and it seems to be working properly again. No more jerking and erratic shifting. Granted I just had this done yesterday, but it hasn't happened since. Also there is a period where the PCM has to re-learn your driving habit/style and the software adjusts the shift points in the tranny. I have read it takes ~ 500 miles but don't quote me on that. The cost was $110 for all related TSB's so you can imagine my relief. I thought I was in for major work. There are many software related TSB's so check the list and find all that apply to your Commander. I found 3 that were fixed with the software. A list of TSB's can be found here http://www.xkjeeps.com/xk_tsb.htm Hope this helps! I will re-post later if the problem arises again.

[love my commander]

Originally Posted by Longbow

Sounds like something similar that I am going through now. I have an 06; 2wd commander with 79000 miles. For the last few days when slowing down for a stop light or sign, as the xmsn downshifts it seems to "jerk" into 2nd or 1st gear. It happens about once a day for the past week. I have tried to duplicate it with different driving styles but nothing happens. When I try to manually shift down to 1st gear I feel a similar "jerk" but I dont think its only happening in that gear when in D. I have not yet had it looked at for that reason but plan too soon. If you get an answer please post it and I will do the same. Also I am in Texas now and the weather is.... Hot and Humid so I dont think it has anything to do with the problems in the earlier posts.

I have not noted the RPM when that happens and I notice no real difference in performance other then that sudden "jerk". Also, there has been no Transmission light that comes on.

Mine now seems sorted after a complete transmission replacement under warranty.
Chyrsler techincian came up but would not talk to me at all, report given to dealer was nothing found but fault most probaly in trans and authorised a replacement.

Still have the "over temp " message and they are trying to say it is nothing just a characteristic of the software "beleive " it is that they do not know what is causing it.

I did check through the tsb's and any relevant ones were flagged up to the dealer for action but nothing resolved

The dealer did say however that the 2008 GC's were flashed to update the software but it cannot not be done for the commander??
which has the same running gear. Revison version not compatible??

Apart from the " temp" message which I still have I also still have the hesitation on applying the accelerator after coasting e.g. like coming off roundabouts etc.

[Billybob]

I just bought my Commander about 1 month ago. I Have recently noticed that when you shift from park to drive and punch it something strange happens. the engine will rev for 1 sec then die down then slowly rev back up and start moving the truck. It also happens if I shift from neutral to drive. It only lasts for about 2 or 3 seconds and doesn't ever happen from a stop just when newly shifted into drive. Is this something that is bad that I should have looked at? or is this a failsafe system Jeep built into the computer? any Help would be great!

by the way its a 07, 3.7L

[sherts82]

I joined the forum just to talk about this...2008 XK w/42k mi. 3.7 4x4. I talked to my mechanic and he thinks it's just the 2 sensors on the tranny??? Hopefully not too expensive. Will repost on or after Friday, when my car see's its doctor. Wish me luck!

[UK Commander]

Originally Posted by love my commander

Hi I am in UK, 3ltr deisel commander
I and the previous owner have transmission problems
The gear change is not smooth and sometimes it is as if it is not in gear then jerks forward.
It has had the electrical plug changed, new gear shift module and the valve inside transmission changed.

But still not happy with performance

During all this when you first switch the following message very quickly flashs up before normal display. Had to film it and slow down on computer to read

" Transmission over temp" this even when cold from over night and dealer says not dtc's showing

Milage now 17,000 was 5,700 when bought

Any thoughts or anybody had same?

Thanks

Hi there fellow Brit,

Oh dont get me started.....I had 3No transmissions replaced on my 3.0ltr CRD, the dealer was no use what so ever....i never did really find out the truth of the problem....they say it was a bad trans mounting and alignment that caused the continual failures...I'm not so sure.

I hope you dont take yours to JCT 600, I did twice and boy are they totally stupid!

I'll check back through my records, i'll see what i can find.

I'll be back soon.

[guitarfool]

Greetings! I have an 07 commander and love it, In the past few weeks a "whining" noise started. Sounds like fan on high but only sounds when i accelerate and car isnt remotely hot. This leads me to think its the tranny. How to fix whiny transmission or should i trade it before it gets worse? HELP!

[specpot]

My UK spec 07 commander 5.7 hemi has recently developed a very similar auto box problem. Gone into safe mode indicating 3rd but in 2nd and moves with lots of revs but not really controllable as jerks and goes quickly. It has only done 30K UK miles and has been serviced more or less on schedule by Jeep apart from the last service at 27K miles. As it broke down on holiday in the far north of Scotland there were no Jeep dealers so the local main Ford dealer ran a limited diagnostic on it and found low oil pressure & perhaps a blocked filter but could not even start to fix it. Recovered 250 miles to main Jeep dealer who tell me I need a new (rebuilt) gearbox and torque convertor. Cost £GB 6200 inc tax. Currently asking Jeep Europe for a serious contribution as a car that cost £GB36K new should not require such a repair at 30K miles. I can get a specialist repairer to recon my own transmission for £GB 2800 so I think Jeep are taking the mince as we say in Scotland. Seems to be a lot of posts about auto box failure. Jeep have asked my dealer if they think it is a manufacturing defect but they seem to think Jeep are going to find fault with the service record and blame it on that. Car never towed more than 1500 kg for not many miles and never been off road other than in a muddy field.

[Shawn]

Hi, another brit here.

JC 5.7L Limited on 60,000ish miles

2 nights ago it was cold and icy (2c) and I was gonna drive home from work. Whilst pulling away I noticed the car was shuddering and driving really slow, then I realised it was stuck in 3rd gear! Going from N to D made the car jump forward and was instantly in 3rd gear. Restarting didn't help. Pushing left and right did nothing, except holding the stick to the right made it display 'D' but was actually still stuck in 3rd. Letting go just flipped back to '3'. Managed to get home but the check engine light came on during the journey. DTC code P0700.

Next day, engine light is still on but looks like I can use it as normal (not driven it but no longer selects '3'). Taking it to Jeep tomorrow, will let you know what they think. I suspect the cold weather had something to do with the problem. I've only had the car 2 months so I really hope this is a one off!