Mon Aug 13, 2012 5:15 am
This one is a long shot but it did happen on my touring once.
If the car has the 13 button OBC when the unit starts to fail it can cut power to the ecu and hence fuel pump causing the symptoms you describe. This is because the obc has an immobiliser function. To rule it out find the plug behind the glovebox with two green wires leading from the main loom. Seperate the plug and loop the wires on the main loom side.
There is a list as long as your arm as to what it could be though, failing relays, fuelpump, coil overheating (rare), poor connection on c101, c151, battery, engine earth strap or even a crank position sensor starting to fail or afm.
Things it probably wont be are intake air leaks or the blue temp sensor. Though the blue temp sensor is worth checking every couple of years anyway as a service item.
Sorry cant be more specific but theres enough things to rule out there for a start.
Seán