Engine stalling problem

[chips58]

Hi guys, I'm an old Holden enthusiast but am working on a friend's VT series III Ute (Jan 1999) or at least I assume it's a VT.

Problem is it runs fine when started, nice idle, but hesitates on accell. Eventually it will stall and will require a rest before starting again.

It was run dry so I've changed the fuel filter. Found that the old filter had been put in backwards! It was also absolutely filthy. I assume you would expect to hear the same high pitched pump sound normally heard with sedans and wagons? Not hearing this so am assuming I may have pump problems. My next task is to see the fuel flow. Diags codes just give me a 12 which is normal so am assuming electronics are fine.

Any thoughts from anyone?

[vt s]

My uncle had similar sounding problem with his vs commy. it ran perfectly fine in normal driving conds but once you found a hill or just went to give it some it coughed and splattered. He ended up spending over 1500 on various things and in the end i think it was a cam sens magnet on cylnder 1 so whn under acceleration the car would be just randomly firing as it had no idea of the position of cyl 1. not sure if this helps ..