I have added a 1991 Classic Collection XJS to the fold. 27,000 miles on the clock, and this car set for years.

The transmission seems to work fine, shifts smoothly, however I have transmission fluid pouring out through what appears to be a tube hidden above the transmission governor cover plate. When I rev the at 30,000 rpm, then let my foot off the gas, about to teaspoons of Transmission fluid pours out of this tube, dripping all over the transmission mount and rear part of the transmission pan.

The hose that pours the fluid appears to have a nipple to attach a vacuum hose or perhaps a drain. I have followed it, it appears to head towards the front of transmission, up past the vacuum modulator up and to the left middle of the top of the Transmission. (that is as far as I have been able to see so far.
Is there any way to access the side of the transmission from the cabin? Please help.

 

Just had a look at the parts drawings.

The V12 is more to the front.

The 6cyl is in the extension housing, and has an o/ring arrangement.

Both parts drawings are attached.



6 cyl breather



V12 breather

 

Grant, Cheers mate, and Thank you for the pictures.

The leaky niple I found on my V-12 looks like the niple (part # 12) in the second photo above. The tube, (Part #14, appears to be laying straight across the top right hand side of the transmission, towards the rear, connected to nothing.

In the photo, I slipped the clear tube on the empty nipple (part # 12) to divert the transmission fluid away from the transmission mount. What should Part # 12 be plugged into, if anything.

 

AHA, the mud clears.

The V12 tube is basically clipped to the body of the car near the RH side of the trans from memory.

It does not connect to anything as such, it is simply an atmospheric vent.

Not sure why you have fluid exiting from that tube. Never seen that in all my years.

The filler tube grommet at the trans casing is the MOST common leakage point, and a fair mongrel to replace in situ.

 

I think you are always going to have trouble with it if you keep reving it to 30,000 rpm LOL It's not just been overfilled and spewing out the breather is it?

 

Looks like she has been over filled.


The dipstick that was in my newly acquired 1991 XJS (27,600 miles on the clock) was 6.5 inches shorter then the dipstick on my 1988 XJS.

Thank you Grant and Baxtor for getting me on the right track.

 

One looks like an engine oil dipstick and the other looks likes transmission oil dipstick


Cheers
DD

 

Doug is SPOT ON.

That short one is an engine stick, 100%.

Gotta luv previous owners, NOT.

The top one is a TH400 stick, and that will sort your problem quickly. Suck the excess out via the dipstick tube. I use that Black plastic irrigation tubing and a large syringe (350ml), and have some JD nearby for company.

Cheap fix, and look at the $$ we saved you for DRINKS.

I forgot, I do that.

NO, there is NO transmissoion damage. Simply get it back to level, and drive the pants off it. Oil smell will settle eventually.

Always remember, "Its a Jaguar, you MUST have FAITH".

 

Dipstick on ebay $18 bucks. Done. Bottle of Jack. Done.

Since I have that pesky Transmission mount off of her at the moment, I may as well put her new Transmission pan on. Any suggestions on dealing with the trans mount, or should that be a different thread?

 

Trans mount is a "operate with extreme caution" item.

That spring packs a PUNCH. Greg in France did a top write up on uusing threaded rods to remove and refit that thing without losing your hand, and I cannot find the link at the moment, buts its here somewhere, and also he will slide past when the time zones sort themselves out, and give us all a steer.

 

Here it is, thank you for the compliment Grant!

https://www.jaguarforums.com/forum/x...itting-145478/

Greg

 

my 1990 jaguar is doing the same thing but. the transmission stick is the right one and when i check the fluid its showing over full i dont get it that was a lot of fluid poring out the bottom of the car just like the pic above.

 

help me Greg my 1990 jaguar is doing the same thing but. the transmission stick is the right one and when i check the fluid its showing over full i dont get it that was a lot of fluid poring out the bottom of the car just like the pic above.

 

If the tranny is overfilled (I think that is what you are saying), then you have to remove some fluid. As the standard pan has no drain plug, it is easiest to undo the single clip holding in the modulator and let it pour out of that hole. You can even syphon some out of there if need be.
In the photo, the modulator is the small round unit on the tranny just in front of the dipstick tube. You can get to it from below without removing anything. Also check that the vac tube and elbow that cones out of it is not shot. This tube goes up to the manifold.
Greg

 

Or, push a small diameter hose/tube down the dipstick filler tube, and syringe out the excess.

Fluid level must be checked HOT, with the engine running, in case you did not know.

 

thanks for the reply Greg and Frances but let me give you more info i took my 1990 jaguar out for a ride after 1 hr of driving i notice smoke when stop so i pulled over thats when i notice fluids poring out the bottom of the car if i had to guest it had to be about a cup full or so. but i dont understand i haven't added no fluids been driving the car and this never happen lost about a cup full of fluid and it still showing a bit over filled and the back transmission mounting looks loose i could shake the back of the trans with my hand.

 

BigS
It could just be the oil pressure and warning light senders leaking. These can easily produce the symptoms you describe. They are at the back end of the V, on the oil distribution fitting, at rear of the capstan stand. Each has a wire going to it. The leaks are hard to detect just be looking, but if it looks oily there, that would be the reason. If you renew them, you MUST support the fitting against the undoing torque, or you will break the ally casting.
Greg