454 starts & runs for a few seconds, have 2 pump pedal 2 keep it running, backfires through tb

1994 CHEVROLET SILVERADO
250,000 MILES
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JOHNNY1956
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  • 1 POST
replaced fuel pump,map sensor,cap & rotor,plugs & wires,tps, has 33, 34,43 codes
Nov 18, 2011 at 3:15 AM
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