warm start problems ??

[tennentsfan]

Hi there ,
Having a few problems with my passat .
Starts nae bother when cold but it struggles when warm .
Also sounds like the fuel pump is priming itself when you switch engine off .
Its a tdi 130 remapped to 176 .
Any suggestions ?
Regards Kieran

[calum]

Kieran , general search on the net concludes that the coolant temperature sensor has failed , a genuine replacement can be had for less than £20 don't buy a pattern part or else you'll have to change it again , hope this helps , Calum .

[tennentsfan]

Thanks Calum ,
No such changed the coolant sensor as suggested and its still happening .
Did read somewhere that it might be the fuel pump relay ???
Regards kieran

[martin1810]

A code read would help.

[tennentsfan]

the guy who usually does my diagnostics is offshore at mo .
Dont suppose you could point me in the direction of a cable for vagcom so i could do it myself ??