@Bemble is the gearbox god in this ere area. The oil swap will reveal any evidence in the sump when you drop it... But be ready to make big decisions if needs be.
@Bemble .. Have you quite finished showing off now????Well it’s certainly worth checking the fluid level, but I’m afraid it sounds like the axial needle roller bearing between the B-clutch hub & C-clutch drum has failed and allowed the input shaft to slide inside the B-clutch drum, splitting the O-ring which seals the A-clutch.
When the fluid is cold the pump can keep up with the leakage. Once it heats up, and the viscosity reduces, the pump can no longer keep up and the pressure on the A-clutch drops, allowing it to slip. The controller senses the slip and immediately puts the transmission into failsafe. Once the fluid cools down, the cycle repeats.
Because the A-clutch is used in all gears except 5th and Reverse, these are the only gears that continue to operate.
Phil
If you’re reasonably handy with a set of spanners there’s no reason that you can’t fix this yourself. Stripping, fixing and rebuilding the transmission is the easy bit. Getting the thing out of, and back into, the vehicle is by far the hardest part.
If you don’t fancy doing it yourself then take it out or get somebody to take it out and send it to Benble and he can sell you a new one that is as good as the day it was born if not better.. Buying second hand or one that hasn’t been properly refurbished is a painful game.
People seem willing to tackle complex engine jobs yet, when it comes to transmissions, they think there’s some kind of witchcraft involved and it’s a black box that no one should dare delve in to. This is absolutely not the case. Automatic transmissions are a darn sight easier to rebuild than any engine.
Phil
If you’re reasonably handy with a set of spanners there’s no reason that you can’t fix this yourself. Stripping, fixing and rebuilding the transmission is the easy bit. Getting the thing out of, and back into, the vehicle is by far the hardest part.
People seem willing to tackle complex engine jobs yet, when it comes to transmissions, they think there’s some kind of witchcraft involved and it’s a black box that no one should dare delve in to. This is absolutely not the case. Automatic transmissions are a darn sight easier to rebuild than any engine.
Phil
... I had asperations in this direction as I love the combination of precision engineering & the cleanliness associated with auto-box overhauls, but to my shame I have left it far too late in life
