Just thought I'd give a quick update on this - replaced accumulator, adjusted clutch rod and recalibrated. Drained as much of the unknown red Dexron III as possible by releasing both in and out hoses, refilled with Tuleta CS, ran through, drained and refilled again.
After this, gear changes are much smoother, especially when cold, when the car had a tendency to kangaroo hop like I was a learner when setting off first thing, much to the amusement of the kids :-)
Now the annoying bit - The gear indicator still flashes in 1st and 2nd while accelerating. There are no error codes from the selespeed ECU, and the car drives really well. I'd convinced myself it was electrical as the flashing seemed to be more frequent during wet weather, or if the car hadn't been driven for a few days. Today I've cleaned all the contacts to the sensors, relays and the big multiplug, and it's still the same, even though it's nice and sunny and dry, so I'm thinking it could be something else.
The flashing in 1st and 2nd seem to go away after a while on a good long run, but then return when the car is cold again, and it only flashes while accelerating, and only ever in 1st and 2nd.
It's not really causing a problem with driving the car, but it is annoying, and I'd like to get to the bottom of what the problem is. I'm thinking its either the gear position sensor at the back of the actuator, or something physical with the gearbox.
So, my plan of action is to drain the gearbox, remove the end plate and clean any swarf. Then if that doesn't solve it, replace the gear position sensor. Does anyone have any better ideas?
To me it's odd that it only happens when accelerating, which would point to the clutch speed sensor, or a worn clutch, maybe? The car has done 86K, but that is a lot of stop-start and country roads, not motorway cruising.
Any suggestions (including, relax, enjoy and be thankful and wait till it breaks properly with an error code or something else obvious!) welcomed...
Last edited by ceejaybee; 26-08-12 at 23:40.