I used to have an LPG system on a Ford Scorpio about 10 years ago.
We had a few problems where it would cut out all of a sudden after driving on LPG, especially in the cold.
It was a long time ago, so the systems may have changed considerably. Get ready for a very non-technical description:
it turned out the problem was that not enough hot water reached the higher parts of the lpg engine bits, the bit that got very cold, it was easy and cheap to fix.
might be worth a look?
Last edited by MichaelG; 02-11-2010 at 07:52 PM.
Reason: spelling