So at about 70k i decided to do a transmission service at the shop i work at.
(I now have about 72.5k) 500 miles later after the service, every time I reverse and go to drive the trans kicks hard and some times when i cam to a stop and accelerated it would also kick some of the time but not as hard. I've had it at a trans shop today they told me $2,700 for a rebuild. I also had my diagnostic computer on it when i had it at the shop and reset any parameters to do with driving just so i had a clean slate to start with. still nothing.

Have any of you guys came across an issue like this?

Any advice is appreciated!

 

What model and year?

 

If the car is a X308 it probably means the A drum is failing. Was the service a transmission flush? There have been several warnings about not doing that because of the risk of disturbing abrasive particles and leaving them suspended. But it might also just be coincidence.

 

Like he said, year, make, and model. Is it a 97 XJ8, 03XJR? There are different trans in different models. It helps the board to give as much info as you can.

Chris

 

I do apologize about that. it is a 2003 xj8 sport. it was a standard transmission service with dropping the pan, replacing the filter with fluids. The trans is a ZF 5HP25.

 

I think you mean 5HP24. I does sound like a A drum failure, like I said. It's unfortunate that you didn't replace the main pressure valve with the upgrade from ZF, but the drum may have already had a crack started.

 

Is there any chance that there is simply not enough oil? Did you do the service yourself? If just doing filters there is a fancy procedure how to fill the transmission to the right level. Something like "fill until slowly dripping out at a certain temp at certain rpm".

 

I did do the service myself but when I took it to my buddies trans shop he told me that fluid levels were over filled just a smidge so that will not cause the issue I have. I have heard of this drum failing since I also drive a 2001 bmw 530i, mine is a manual trans but on the forums I've seen the topic float around about this drum on automatic models. Well... since I work in a shop, how hard is to replace this drum or any real special tools to use or proper placement procedures?

 

If you do a search on the forums for rebuild of transmission or 5HP24, you should find lots of help, even DIY with pictures. Also check jagrepair.com. It is not difficult or expensive.

 

I did a bit of forum searching and found that the drum and the valve with in the valve body goes bad inside the transmission. I will have to contact Transtar and see what these will run me.

 

I believe several members have purchased updated A drums and associated parts from ebay vendors. Sunbelt appears to be a good source for a valve body rebuild, probably a good idea at this point.

AW55-50, O1M, JF506E, 5R55e, 09G Valve Body Replacement

Replacing the transmission with a used one would not be wise, in my opinion.

 

I work in an auto shop and we did a used transmission on a 2000 mitsu Montero sport. The darn thing blew up 1000 miles later. After seeing that I will never buy a used transmission.

 

Also could someone tell me what the name of the valve that goes bad in these as far as when you go into drive and or reverse. I might give that a shot first before gutting the trans and getting into a world I have not been to before.

 

Hope this helps, Blighty forum

ZF 5HP24 Valve Body Fault

And a forum member that might help as he's familiar with the job, I'm not....yet
https://www.jaguarforums.com/forum/x...-bmw-x5-66718/

 

http://jagrepair.com/images/AutoRepa...%20ZF5HP24.pdf

Main Pressure Valve 5HP24 - 5HP30