Weird Trans Issue...solved?

[Spud Man]

Just thought i'd post this in case any one comes across a similar issue.

Some months back had an MV Auto shift kit fitted to my rwd C34. Everything was fine and dandy for a few months until one day i wanted to have some real fun, manual mode, wot.

Got home and noticed funny whirring sound from trans, checked fluids etc, found everything good.

Next day drove it in D seemed fine, switched to manual and revs would flare approx 500 rpm for each change, back into D and fine again.

Spoke to MV auto and they said they hadn't heard of that sort of prob before and it sounded strange and i should get it checked.

Found a local tranny bloke here in Western Suburbs and described symptoms. He said it was very strange as the symptoms should show up the other way around. If there was an issue with the trans, i.e if the pump was dropping pressure it would show up in D and manual mode should make it seem less obvious. He said it might be a TCU problem.

I decided to see if i could get it to relearn by disconnecting the battery and drain power by jumping on the brakes. After reconnecting and driving it for about 20 mins no change. Booked it in for a check up. Went to drop it off this morning and it was good again. Tranny bloke said it would've been the first thing he would have done as well.

So now back to Yee Ha and smiles. I'll keep posted if issue returns but am hoping relearn has solved problem

Cheers

[zoomzoom]

If you use a consult cable and the free software OBD scan tech, you should be able to access the auto section of the ECU. It will display the status of all the relevant sensors and solenoids. This works on a s1, I know there are some differences with the later ECUs.

That would be a good start to see what is going on. You can log the sensors as well to capture what is happening when the gears flare.