[Kdw807]

Hello everyone
I have a fault with my Auto gearbox but my peugeot garage cant seem to help (no fault codes on the computer).
this is a description does anybody have any ideas ?.
After first starting the engine when cold
Engage any gear for the first time there is a hefty clunking noise from the auto gearbox and the vehicle lurches in the direction of the gear selected.
(If the parking brake is off)
After driving forward for the first time
When the vehicle gets to normal speed for gear change the auto gearbox attempts to change up,
but there is a loss of drive causing the vehicle to slow down,
then with another hefty clunk engages gear almost stalling the engine and nearly stopping all forward momentum.
This can happen up to 3 times in the space of 100 metres and then seems to right itself.
All the above will happen again after the gearbox has cooled down.