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What is the problem with your 1991 Pontiac Firebird V6 3.1 if the fuel pump only comes on after ive tried starting it and have changed the fuel pump relay?
Wiki User
∙ 17y ago
YOU MIGHT CK -GM USED 2 RELAYS FOR THE FUEL PUMP IN THOSE YEARS-1 RELAY WAS TO TURN ON THE PUMP TO PRIME THE LINE WHEN YOU TURN THE KEY ON BEFORE THE CAR STARTS .THEN THE SECOND RELAY COMES ON AFTER THE CAR STARTS-YOUR CAR MIGHT BE SET UP THIS WAY-IF SO SOUNDS LIKE YOU NEED A PRIME RELAY
Wiki User
∙ 17y ago
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