Hello Fellow JAG Lovers,

I have been able to get 1985 Jag XJ6 started.
From the last maintenance records, this car has sat nonoperational since 2006.

When i set the gear to Reverse, you could feel and hear the reverse gear is activated but accelerating to drive on reverse fails or never works.

1. What could be the possible cause of reverse drive failure
2. how do i fix it.

Thanks for your support.

Mike

 

Mike:


I fear the worst.


1.
A. trash in a valve body passage so that the band on the reverse sun does not get applied.
B. The lining on the reverse band is worn away, and it doesn't bite the drum.


2. In the linkage from the shift tower to the sift lever on the side of the transmission case. The cable is susceptible to failing. Result, odd results, such as yours.


A. Go down and under and have a pal shift the trans and see if the cable and lever respond correctly. The clamp and or the swaged housing on the cable can go adrift.


Carl

 

Hi Carl,

When set the shift to reverse, you can feel it wants to move but could not be would you still confirm as you have mentioned?

 

Does it go forward?

 

Yes Please, it moves forward.

 

There is an adjustment for the rear band, try tightening it up until its snug then back it off 3/4 of a turn.

 

Hi XJTONY,

Please could you explain well to me and if possible with diagram from the service manual.

thanks

 

Kudo's great and well illustrated.


Good archival material. If I had a BW equipped car, I'd surely print it out and add it to my considerable Jaguar lore.


Carl

 

I asked if it went foward for the following reason:

I experienced exactly the same in my Audi. Turned out to have been filled wrongly by the p.o.
An oil change did the trick for me.

 

Thanks All for support,

Th car is about 360km away from me, it is actually located at LOME port car park in Togo where m fixing it. I was there today trying to apply what i got here but i could not and i also noticed that the reverse light (the white part of the tail light was always on) even on park position. What about this too?

I will have to get a proper area to jack up the car and apply as in the diagram from Carl

More support is needed to fix my Jag to road

 

The reverse signal for the lights comes from the range switch which is mounted externally on the transmission on the range lever, perhaps its faulty or loose or the shifter is not moving the range lever correctly. Its just a switch and has no other bearing on the transmission operation.

 

The credit for the tutorial goes to XJtony, not I.


But, his explanation of the switch that turns the reverse lamps on opens
another thought.


Back to shift lever to trans lever orientation. A slipped cable just might do this.


So, if you are going sown and under check both.


CAVEAT!!!! Never, ever climb under a car suspended on a jack alone. No matter what. Jack stand/s as well.


In your case, as the car will go forward, I'd go for a pair of ramps and a pair of hefty "chocks". And, no tests with anyone under and the engine running. No matter how suspended.


Apologies, just my past profession at work. Folks getting hurt...


Carl