Fuel pump runs 4 - 5 seconds then electricity shuts offs whether fuel lines hooked up or not.

Asked by Apr 14, 2013 at 09:55 PM about the 1992 Chevrolet Corvette Coupe

Question type: Maintenance & Repair

I just purchased a 1992 LT1 AT that had been stored outside for 3 + years. Tank had several gallons of water in it. Drained all gas & cleaned tank, new in line filter, cleaned pump inlet filter, removed cleaned & flushed fuel rails & lines. Electricity to pump shuts off after 4-5 seconds even with high pressure line disconnected and battery at 12.5 volts. If power fed directly to pump it runs continually without problems.

1 Answer

93,495

Do you mean that the fuel pump shuts off with the engine running? It's normal for it to shut off after a few seconds with the key on but the engine not started. It pressurizes the fuel rail.

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