My trans can't seam to figure out wich gear to be in. All stock, at highway speeds 60-75 it wont stop shifting. Up and down, up and down. Even with the overdrive turned off it still tries to shift.

 

Are your tires bigger than stock?
How much heavier than stock is your Jeep?

 

No problems at all with mine, no vibrations at any speed.

 

15000+ and the only prob I have had is the transfer case cable retainer breaking. Now I carry half a dozen replacements with me, just in case.

 

No problems yet - I have 17.000 miles on my 2.8 CRD with auto tranny. I have reprogrammed the tranny with the AEV procal module due to the bigger tyres, this changes the shift points - works just great.

 

Well on Saturday I went in for my first oil change and had them take a look at the tranny vibration/hum that I get while at different speeds (I usually get them between 40 and 45) but they were not able to duplicate the problem ( I dont know why) but they did do a tranny reflash and that did change the problem. dont get me wrong it did not go away but it did change. it is now a deeper hum and at different speeds but not as bad as the orginal problem.

 

Still working good after 35k

 

after reading the other posts I guess I do have the "shudder from day 1 first to second" but only after starting. I always let the JK warm up but the first few times it shifts from first to second I do get that shudder.

 

20k miles no problems spinning my 35s

knock on wood

 

22,000 and no problems (with 35's) but I am considering an additional cooler.