Mine was doing the same thing recently. It sparatically die during start up, warm or cold. Even when it would start, it would sometimes nearly die out, it would drop to like 500rpms and it would struggle but come back to life, no gas needed. If I stepped on the gas, it would start better, but I would have to catch it before it stalled/died. I took it to get checked out at the dealer and they diagnosed it as a leaking intake manifold gasket. The expansion and contractions of the gasket made the problem intermitant (sp?). Hope this helps.