problem - any ideas where to start?

[bazman]

Capt.....my '99 has the EXACT same probs at the very same time as yours!!! Ran like an old mole on dodgy pregnancy pills about 98% of the time yesterday! Only ran cleanly for a couple of very brief moments....and then back to crap again!! It has DEFINATELY got something to do with the downpour overnight, coz it just came out of the shop with a major service and tune and ran absolutely sweet-as all the way TO Tathra beforehand!! That moisture has gotten into the system SOMEWHERE (..maybe LOTS-where!?!)
When you get it sorted, let me know exactly how please.....and help save my lazy arse from too much effort!! lol
We're leaving from Batemans Bay this morning, hopefully will have a nice clean cruisy 3 hour run home from here with no woes....maybe?!? lol