But then outof the blue BOOM it fires right up and runs like a top! Im so baffled. It will start for a week and runs smooth as can be. Then all if the sudden after it sits for a few hours it will go into one of these spells again. It will just crank and crank for a good while. Like for 45 minutes I can crank it with no fire. Then as I said out of the blue it starts up and runs like new. No hesitatation, no misses, no sputtering! I have changed the shut down relay and I thought it cured it but it started acting up again this morning. I don't think its a map sensor because it runs so smooth when it fires up. Any thoughts would be appreciated!
good one, this might be tough. I'd start with the basics, full tune up. check fuel rail pressure, vacuum. battery conections and cables. after that I start with sensors. crank then cam. when it does spark I'd see what kind of spark(strong white/blue or weak yellow.
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