have a had a search on the forum and found that the problem is more than likely related to the speed sensor on the driver side of the gearbox, was looking today...is it the thing with two wires going into it just above the point where the exhausts bend to bring them closer together? its got a black plastic top on, about the size of an old 10p piece? held on by what looks like two 6mm nuts ? help please - power steering up the swanny and also revs get to about 6000 or a toucch more and then on more - just stops giving any more power although if you ease up you can still accelerate in the next gear - have I got two diferent problems here ?

1990 auto jap

That sounds like the one mate.

Happened on mine and gave exactly the same problems.