Originally Posted by barry P.
It will be one of the pressure sensors in the gearbox failing. They stop working when they get to approx 80C and then are ok when the box cools down again. Contact ACSpeedtech in Warrington or Litchfield Motors in Tewkesbury who will be able to fit the Dodson replacements and carry out the recalibration which is necessary after the replacements are fitted
Best advice i've had all week thanks Barry