Car not firing up after short jounreys

[agent_audi]

I have been having a few problems when i run the car on short journeys she doesn't want to fire up and i have to frustratingly keep trying untill she does fire up, its completely random in how long it takes, or even if she will not start up. At first i thought it was the hall sensor issue i have read about but that as far as im aware only arises when the engine gets hot.

Any ideas?

[Jamo]

Classic Hall Sender, had the same get it changed before you really get stranded. I remember getting stuck at a petrol station not good memories

[Fat Audi 80]

Pour some water down the back of the cambelt cover when it does this to confirm it indeed a hall sensor problem. Mine did this a couple of times and after the water trick never again.

Others have been less lucky and had to change it...

Cheers,

Steve.