ok gearbox stripped and put back together and different motor, still the same.
Interestingly however, if i hold the throttle at 100% it jerks along intermittently giving power to the wheels but if I turn the car left the steering doesn't work!!! So it must be a fault with either the transmitter or receiver ? I shall try my brothers 27mhs system in there to see how it goes.
One daft question, the transmitter has a battery meter on it, which usually reads 12volts (8 x 1.5 volt batteries), its down to three quarters on the bar and reading 9.9 volts.....surely the handset would still operate ? I might get some batteries and check tomorrow....I'm using the ones I got from with the car in January (bearing in mind Ive only run the car 8 times) if thats the the case I might have thought they would have lasted longer)