Hi,
I have problem with my gear box jaguar xj8 model 2003, its rebuild recently, when I take it from the mechanic as cold engine it was fine, but after it runs and the engine become hot with its normal temp the shifting gear from N or P to D become not good as have small to medium knock and push, please any professional help with gear box ??? Many thanks to you in advance !

 

Hi Farid, welcome and please take a few moments to introduce yourself in the New Members Area. Just go to the top left under Forums, General Jaguar Forums and New Members Area.

I believe member Daim just went through a rebuild on his, hopefully he can add some information to your issue? What did you have done to yours...was it a complete rebuild? Initially I would check the fluid level, ...just as precaution since it seems to only do it when its hot. I suspect a pump then. If you could give us some more detail on what "not good" is. Is there anything else, ...does it stick, grind, get stuck, click, slip, etc... All information is valuable, remember, we can't see or hear it unless you tell us or post pics or a video. We look forward to your response....

Also check in the regional section for other members in your area that may be able to assist you in person or give you direction to a reliable shop.

 

Was the main pressure valve upgraded? If not, your gearbox could already be on it's way out again.

It can also be too much play in the clutch packs resulting in a knock.

 

Thank you highhorse , mechanics told me they change driving shafts which was broken with some discs which was about 50 cm assembly long. Also, there is no slip, grind or stuck but only push and kind of click and knock when put shift from N to D or from N to R too , he put fluid kind of ATF equivalent to Dexron 11, not esso or Mobil 1174.
Thank you.

 

They didn't replace the valve...

They cured the symptomes but not the cause...

 

Thank you Daim,
mechanics was not upgraded main pressure valve ! So I assume to upgraded , as I have no idea about it that need to put upgraded new one !
Thank you Daim, you are a great help .

 

Hi Farid,

Welcome to the Jaguar Forums. It's great to have you with us, but I am sorry that your Jaguar is unhappy.

If you can please post the exact fluid he used, that will help us determine whether it may be contributing to the problems.

Cheers,

Don

 

Yes Daim, he didn't replace the main pressure valve .
But the big astonishing news just now as I talk with the authorized Jaguar co. in Beirut they told me price of this main valve of gear box is $6000 just for the piece with out labor ?!?!

 

Welcome to the forum Farid,

We're a friendly forum and we do like to something about our members.

Please follow this link New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum to the New Member Area - Intro a MUST forum and post some information about yourself and your vehicle for all members to see. In return you'll get a proper welcome and some useful advice about posting to the forum.

Graham