I have a 92 loyale wagon that has been having a problem I can't figure out. It's intermittently hard to start as in it will turn over and catch but will die immediately, won't even get up to 500 rpms. After 2 or 3 sessions of cranking it an pumping the gas it fires up. I've been told since it's fuel injected pumping the gas is pointless but, hey, it seems to help... This happens every 5th time or so and always on the first start of the day.
When it is running it will lurch/hesitate. I've heard people use both words to describe it. To me It feels like it is about to run out of gas for just a few seconds. I had it at a shop and he tested the fuel pressure which was low so the fuel pump was replaced. It did run MUCH better after the fuel pump fix but it still has the same symptoms, just not as pronounced.
Took it back to the same shop he went over everything and said it seems fine. Suggested it was possibly bad gas and recommended I use high octane chevron on my next fill to see if there is a difference. I do use 92 octane gasoline but not necessarily from Chevron and the gas in the tank right now is from Arco.
Other things that may or may not be relevant:
-It's had timing belt/tensioner/etc... re done recently.
-Head gasket and other various seals replaced.
-New plugs and wires.
-Had a heck of a time diagnosing and erratic idling issue a while back which resulted in bypassing some wires to the IAC. I was told they were grounding against the engine block.
Other than regular stuff like CV joints, clutch, breaks, tires and the like that's about all I can think of.
Anybody have some thoughts/suggestions?