Transmission fault
 

I have a 91 svx with 136,000km and transmission was serviced about 25,000km ago. Last week the transmission developed a fault. When accelerating from standing in D the transmission slips extremely badly. On partial throttle it will redline while travelling at about 5k's. If you take off really slowly you can feel it partially grippingenough to accelerate, this lasts until there is enough speed to shift into 2nd after which there is no problem. Downshifts to 1 also cause the same problem. The interesting factor is that if you put the car in 1 there is no problem. In 2 and 3 and in Manual Mode the car has the same problem. I have checked all the error codes but there aren't any.

Any ideas would be Great
Thanks

Re: Transmission fault
 

Well from your description, it looks like the 1-2 one way clutch is slipping. It is used in 1st gear in the D position, but is not used in 1st position, its replaced by the Low and reverse brake, in this position.

It is a Sprag type one way clutch. not a clutch with linings. the slipping you are getting, is not wearing any thing away, just the sprag that is sliding around the wrong way.

Why it is slipping, don't know, just looks like the sprag is worn. Yes the box needs to be pulled down to fix it.

I the mean time use the shift lever for the first gear take off, then lift the boot and slip it into D. When you stop at a light select 1st again. All the best.

Harvey. ;)

Thanks for the information, i was kinda hoping that the box would not have to come out, but nevermind. Looks like i'll have to bring plans for a manual conversion forward.

Yer, sorry about that, just have to use the stick till you can fit another stick.:)

Harvey.;)