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Old June 25th 05, 11:05 AM
Mike
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Try running some good injector cleaner through it.

"wildside1975" > wrote in message
news:1_614273_68fb111310d5431a16593e258aba0e92@aut oforumz.com...
>I have a 1994 dodge van with a 3.3 engine. It runs fine for about an
> hour, then once it gets up to operating temp then it backfires through
> the intake, spits and sputters and has no acceleration. Recently
> replaced the fuel pump, new spark plug wires, and coil pack.I tried
> loosening the gas cap and driving to see if it was possibly vapor
> locking. The codes we have are 12, 21 and 55. This mostly seems to
> occur when it sits and gets hot, but the temp gauge doesn't rise, so I
> don't think it is overheating. It drives fine for awhile and then
> starts dying. If I shut it off and let it sit for about an hour it
> goes away. Any ideas of what else to try??
>
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