Gearbox Oddities

[ulfilias]

Hi Guys,

Never had an issue with my old 2000 FL S8 and the gearbox up to 235K. Just picked up the new one 98 PF S8 and it drove from London fine. Up to Leeds and Back and then Monday on the 12 miles to work I hit the A1 and it reved up high and no power. PNRD4321 on the dash and then power came back but it didn't seem to change gear.

Got to work an put on vagcom 17117 - Gear 3 Incorrect Ratio P0733

Cleared this off and things worked ok.

Driving home and PRND4321 came up just after starting

Cleared the fault again and I could select select things on the dash and vagcom, but the gearbox didn't seem to do much. Tiptronic showed 5 not 1. I could go back and forwards, though pick-up was slow until moving forwards. Seemed like the car can go 0-??? in one gear!

Drove to the supermarket. Parked up. Did stuff. Got back in and no error. Drove home fine.

Yesterday morning it was fine for the first few miles and then again high rev. PRND4321 and similar problems. Clear the code and this time it seems Tiptronic shows 4. The revs are a bit higher at motorway speed, though take off is still very slow until moving.

Vagcom showed
17114 - Incorrect Gear Ratio P0730
17145 - Shift Solenoid 3 (N90) : Open or Short to Ground P0761

Again I cleared them off. Left it a while. But now i get PRND4321 with a bit of a thump when i select D or R

and 17145 keeps returning.

Any ideas where or what Shift Solenoid 3 is ???
BTW I do still have the old S8 at the moment for parts etc!

Lee