could anyone tell me why my 300 sometimes wont start when its hot...i allredy managed to check that it has a spark when the problem ocours and i no that its not the ptu sensor...has anyone else come across this??:headvswal

Usually a series 1 ptu, its not a sensor by the way it acts like a distributor and controls the signal to the spark plugs.

 

The series 1 ptu has heat sink fins, also has been a common fault by getting too hot, i take it your car starts when its cooled down?

 

HTH

Cheers

Graham

yea it does,start fine when its cooled down

Then i would suggest changing the ptu, should solve your problem. Ideally get a series 2 ptu. The ptu series has nothing to do with the car seiries by the way, its just an upgrade that most people do for more reliability

 

Cheers

Graham