02 Chev Express Mis-Firing Maybe?

I have an issue with my 02 Chev Express. It has the 4.3 V6 Vortec engine. Recently, when I start the thing in the morning, It starts and runs well, but when you put it in drive and take off, It acts almost
like its either mis-firing or flooding. Can hardley get it moving. After you drive it for awile, Shut it off, re-start it, It seems to run fine. Also, when crusing at higher speeds, almost like it dies and kicks then keeps going. I did notice that if you shove the throttle down hard, the Computer Light Flashes on and off something like 3 or 4 times. then stays on. Any idea why the light does this? Is it mis- firing one of its cylinders? If it is that, why would it work right after it warms up? This is the 2nd V6 Vortec in the van. The first one ate distributors. Are the V6 Vortecs just junk? Any help would be great and thanks
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The 4.3 is usually a good engine, the place I work for had an Astro van with 192,000 miles on it, sold it to someone that works there and now has 310,000 miles on it.
I would get it on an OBC scanner and see what shows up.
Every once in a while one does get past them though, a few years back I tore down a 4.3 that got turned in to a junk yard for exchange. I disassembled the engine and found a broken drill bit where they cross-drilled the crankshaft. Maybe if the drill bit wasn't in there the person would not have needed the motor out of the junk yard?

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on the missfiring i think thats what its doing, it happened to me on my firebird. one of the posts wasnt firing and thats what caused my problem.
"snowcatns" wrote: > I have an issue with my 02 Chev Express. It has the 4.3 V6 > Vortec > engine. Recently, when I start the thing in the morning, It > starts and > runs well, but when you put it in drive and take off, It acts > almost > like its either mis-firing or flooding. Can hardley get it > moving. > After you drive it for awile, Shut it off, re-start it, It > seems to > run fine. Also, when crusing at higher speeds, almost like it > dies and > kicks then keeps going. I did notice that if you shove the > throttle > down hard, the Computer Light Flashes on and off something > like 3 or 4 > times. then stays on. Any idea why the light does this? Is it > mis- > firing one of its cylinders? If it is that, why would it work > right > after it warms up? This is the 2nd V6 Vortec in the van. The > first one > ate distributors. Are the V6 Vortecs just junk? Any help would > be > great and thanks
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