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1985 Jaguar XJS Repair Question


Topics covered: Clutch, Pressure test, Transmission.
Mileage: 86,000 miles.

Asked on March 19, 2012

Transmission excepting no gears

I just rebuilt the tranny,because i was only getting reverse.
now i can't get any gears to except.I'm Machanically inclined and not my first tranny rebuild, but i'm stump on not getting any gears.
i'm looking for things i could have over looked..no gears at all is odd to me.
Avatar Asked by kfernandes

Answer

Replied on March 19, 2012

Have you checked to see what the transmission line pressure is?Thats the first thing i always check.

Tiny Answered by saturntech9 (expert)
23,158 answers provided
Replied on March 19, 2012

i just diconnected the line to see if there was any pressure at all. the one thing that was different in the parts that was changed was the vaccume modulator, the original one was pretty big in comparison to the new one that was sent,i was told that it would be a propblem.. could that be the culprit?

Tiny Response from kfernandes
1 question asked
Replied on March 19, 2012

i dont have a pressure gauge for a line, but there was plenty fluid coming out when i disconnected the line,and i checked both lines.

Tiny Response from kfernandes
1 question asked

Replied on March 19, 2012

We could have enough pressure to squirt fluid all over doesnt mean there is enough to go into gear.The first thing i would check is the actual fluid pressure.I would have checked that even before rebuilding the transmission.

Tiny Answered by saturntech9 (expert)
23,158 answers provided
Replied on March 19, 2012

what tool would i need to check the fluid pressure?
and the clutches in the two packs were fully burned out.clutches were down to metal.

Tiny Response from kfernandes
1 question asked
Replied on March 19, 2012

ok,so i will check fluid pressure, what should it read?
if thats turns out to be ok, what would be a "checklist" of things to check before coming back with more questions?

Tiny Response from kfernandes
1 question asked

Replied on March 19, 2012

The clutches could have burned up from low pressure especially since you said all the clutches burned up.There is always a reason why the clutches burn up.You would need a transmission pressure tester kit I bought a nice one from amazon and it was 50 something when i bought it.I will look up the pressures for you.

Tiny Answered by saturntech9 (expert)
23,158 answers provided
Replied on March 19, 2012

ok, do you know what the pressure should read?

Tiny Response from kfernandes
1 question asked
Replied on March 19, 2012

I posted all the info on how to do the pressure test and where to screw the pressure tester in.Let me know what you find.

Tiny Answered by saturntech9 (expert)
23,158 answers provided