1993 Pontiac Grand Prix 3.1 engine running problems

1993 PONTIAC GRAND PRIX
20,000 MILES • 6 CYL • FWD • AUTOMATIC
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MAILMAN218
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just bought this car,will run like a top for 5-7 minutes then bog down and dies. have put in a new map sensor, a new ect sensor, a new cold oxygen sensor and a new iac sensor. no codes come up on a hand held tester. still runs 5-7 min. then dies , will usally restart right back up. any ideas? do i put in a new ecm next? my fuel pressure is 41 psi on the fuel rail.
Aug 9, 2009 at 8:29 PM
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