Auto VXR8 stuck in gear briefly

[Z0m81e]

Had a problem with the VXR8 earlier downshifting into a roundabout off an overtake I manually held the car in 3rd for some engine braking then a fairly leisurely shift down into second followed by drive. When I left the roundabout the car didn't shift up so I went back into active but whatever gear I selected the box stayed in second tho the number on the dash changed. I pulled over it shifted into 1st as I pulled up and seemed to be fine after. Anyone any ideas what went wrong?

Paul

[ringram]

Stock tune?

[Z0m81e]

ringram said:

Stock tune?

No Walkinshaw remapped about a year ago.

Paul

[ringram]

All bets off then..

[Z0m81e]

ringram said:

All bets off then..

I suspected at the time it might be a software issue considering it started working again as soon as it was forced to change gear by me pulling up and it having to engage first. I guess that is what you think as well. I'll email Walkinshaw and see if this is something which can happen.

On a related note I considered changing it into neutral and back to unscrew it but I wasn't sure what happens if you take a automatic box from drive to neutral and back while moving, will it even let you? and if so what happens? I was worried it would engage first when it flicked back into drive and cause even more problems considering I was doing 30-40 so as not to cause an obstruction on the A road.

cheers,
Paul

[StefanVXR8]

You could try removing the fuse under the bonnet for the Transmission Control Unit, does seem to have some effect at resetting the auto box (it won't harm the remap).

I've noticed on mine that if I brake hard coming up to a give way junction/roundabout the gearbox sometimes struggles to keep up with the downshifting/upshifting.

Stef

[ringram]

Yeah not saying it's definitely the tune, could be a hard fault. But worth considering.
If you have to pull the fuse then it's very likely a tune issue as in effect you are resetting the adaptive learning back to defaults..

[Z0m81e]

I'll leave it be for now and see if it recurs its never happened before so hopefully it was a one off. Just wanted to check it wasn't going to be an issue with the fluids or such. Car was in for its service last week but I doubt they would have touched the transmission.

Paul

[r-kid]

Is it not the 'flare' issue that you're having?

http://forum.grrrr8.net/showthread.php?t=14829&amp...