V8 BTR Transmission woes

[SPArKy_Dave 8,892]

Help me, all thee knowledgeable OzFalcon members........

 

The BTR trans in my EL 5ltr wagon is playing up a bit.

(been doing it for a while, but just not as consistently as now)

three things it does -

 

1. It very slightly delays the 1-2 shift, and ends it with a thump into 2nd.

This happens under part throttle only. Full or 3/4 throttle 1-2 shifts are fine.

 

2. It randomly unlocks the torque converter when you're driving along,

with no change to throttle position or engine load.

 

3. Engine braking is random - in that if you manually drop back a gear or two

on a downwards incline, there is no off throttle engine braking.

Not until you either slow right down, or put your foot back on the go pedal.

 

 

Other than these three things, it works fine.

 

Opinions?

[PRO250 1,506]

Pressure control solenoid s5 sounds like its playing up, but the s2 may also cause the same issue and may also be why it ties up in the shift as well

No engine breaking will likely be the inhibitor switch

The lock up convertor sound like a issue with the 1 way clutch its mostey the o ring is damaged on a older trans in a car that's showing on off issues or a speed sensor issue

Theres so much to these transmissions its not funny

Im doing one now and ive had the valve body out 3 times now its going limp mode but its shifting hard to and ive swaped the vps and the s2 and its still doing it I think its a hub issue cause the box has metal in it

Another thing if you open the box and theres a lot of metal in it id just replace it theres a lot that can go worng with them s5 spring can break and a front servo issue can also cause the same thing  
 

[Thom 6,654]

The trans In my wagon was doing the same thing it eventually shit itself about 40,000ks of hard driving after it started doing it forward clutch was completely burnt out

[SPArKy_Dave 8,892]

The trans In my wagon was doing the same thing

What was it doing exactly?

[SLO247 1,713]

Solenoids and clutch that does engine braking.

[PRO250 1,506]

But if the inhibitor is dead it causes the same issue, and if he can step on the go pedal and it will then apply that gear its the inhibitor

[SPArKy_Dave 8,892]

But if the inhibitor is dead it causes the same issue,

 

It had a faulty inhibitor switch back when I first got the car.

It would randomly kick down a gear, and/or go into neutral while driving along.

 

I put the dash into diagnostic mode, and could see it happening.

I replaced the inbibitor switch with a NEW genuine OEM BTR part - an Aussie made Bosch switch.

(the motorcraft ones supplied by Ford these days, are a copy part - not bosch.) 

[Thom 6,654]

Delayed 1st 2nd shift, randomly unlocking the torque converter an no deceleration on gearing down ( also if you down shifted it would act like it had a mega stall until engine rpm matched car speed)

[PRO250 1,506]

Swap that again it's the first place I'd look cause you don't have to change the box or open it