A4 Tiptronic, no reverse.

[h100vw]

After having a couple of recent dramas with our B5 wagon, I thought I'd let you in on them. After doing a few 100km one weekend, the following morning, the driveshaft "fell" out of the left CV while my wife was at the shops. SO I fixed that in the street. Luckily I had a spare boot at home.





Then a week later, it is banging into reverse. Again after doing another few 100 the day before??

The internet suggested that there could be a bad O ring that controls how reverse is fed in.

And behold, when I dropped the oil pan I found the missing piece of this clip.



Dead O ring poking out from valve body at 1 O'clock.


Hoping Jimmy's gearbox man can help me out tomorrow.

[Lito]

That's some serious bad luck mate. Maybe tell Debbie to stop doing reverse donuts at the shops

[guile]

That's some serious bad luck mate. Maybe tell Debbie to stop doing reverse donuts at the shops

are you sure it's debbie, may be the kids are going joy riding? family full of hoons…

nice diagnosis though dr gavin...

[h100vw]

are you sure it's debbie, may be the kids are going joy riding? family full of hoons…

nice diagnosis though dr gavin...

Neve has had some "lessons" although we wouldn't call it hooning. It was fine doing reverse donuts to the right she said

[h100vw]

Fingers crossed this is it.

You can just see the O ring sticking out at 1 oclock



The clip that holds it in had snapped/broken off and was stuck on a magnet in the oil pan.. So maybe there was some stress on one side that caused the O ring to pop out?



Good news everyone.

Picked up an O ring from transmission shop and he gave me a piece of steel to fashion a clip from.

Pictures of this to follow.




Looks horrible but I am a function over aesthetics guy





Filter and oil plus pump. The car was only just off the ground and filling the box last time was hard work. This pump was great and I now have a massive left shoulder from pumping 7 litres through it

I had 4 litres of fluid from the first change I did 2 odd years back and bought 2 more litres with the new filter. Re-assembled everything, new pan gasket etc. Used my new pump to fill the box up, it took a bit over 4 litres before I had to start the engine. Then I used up the whole of the 6 litres I had, I could just get a finger in the filler and feel over the edge and it came out dry. Off to the shops for another 2 litres of fluid.

Valvebody back in place and I should mention the number of bolts holding it. They are t 3 different lengths but you can't get them all to fit and have some in the wrong place. Also the 4 longest skinny ones, go right through the VB and pull down another block onto the top of the bit the VB bolts too. I had a panic here briefly as this block had moved and the holes didn't line up.

One of the wires in the loom had moved it when I disconnected the solenoids to get the VB out. I managed to get a finger on it from the rear end of the box and lined it up.

It took 1,5 of those too. Greedy gearbox. I only dropped 5 out before I started.

Shifting in the garage on stands was encouraging, backed straight out onto the road, no dramas.

Test drive and smooth as silk, it hasn't been this good since we got it.

Really pleased with the job.