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Sticking gear box valve


Mike A
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Help:

 

Jag XK8 2005.

 

Sticking gear box valve .. OK when cold. In low gear it does not want to change up. Had oil changed in Gear Box . No metal bits on Magnet.

 

Dish info .. again only when hot sign of Engine lights up “malfunction indicator lamp (MIL)”. Plus after a while  Gear Box problem lights up..

 

Any one got any thoughts

 

Mike

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  • 3 months later...

I have a similar problem with my 99XK8. I first suspected one of the 8 solenoid valves.  Mine hesitates before engaging from a full stop, but not all the time. If I gradually press the accelerator it has less of a tendency to  pause and jerk into gear. From what I've read the ZF 5HP24 transmissions were known to have problems with the A Drum/Clutch chipping and or burning. There is a improved version available that isn't expensive. It's the labor cost of removing the transmission and replacing the A Drum and putting it all back together. I got estimates of $2800 USD to repair it. My next choice is to get a used tranny and swap it out. I found a used one for $500 USD  and a private shop that will swap it out for $675 USD. I haven't changed the fluid and filter yet but will start there and look for metal on the magnets. There is always a chance it's just low on fluid, but not getting my hopes up. It shifts very smooth if it weren't for the annoying occasional jerk from a standing stop. I hope this helps you make your decision.

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