ok as the titel reads, twice last night while sitting at the lights the revs just plummetted and the car almost stalled. Im hoping its just a fuel issue so got a new Filter and a bottle of cleaner and might get some TB cleaner and do that on the weekend.Im hoping its the fuel issue, I have just driven Perth to Brisbane.But In the case that this isnt the reason, has anyone else got any ideas?

could be the TPS, happened to my mates ute as well...

my engine does that too! almost always just as you push the clutch in de cellerating and the engine comes very close to stalling.. (drops tp 300-400rpm..) and then shoots back up again... usualy have to give the accelerator a quick stab on in between down shifts...

Try here in the tech docs section
http://www.fordmods.com/forums/documents.php?doc=23
Cheers
Paul