Question about 1988 Chevrolet K1500

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1988 chevy 1500 v-6 chevy

Throttlebody when you turn the key on fuel just keeps pumping wont stop untill you shut the key off

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Sounds kind of like the pedal accuator is not properly positioned anymore.

Not much but it's a start

Thanks for letting FixYa.com take a shot at repairing your trouble

Posted on Jan 04, 2009

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without starting the engine position the key to the on position.
you can hear the fuel pump operationing for 4 to 6 seconds upon having the key on.
if not heard running check the fuel pump fuse, the fuel pump relay, and the engines oil pressure switch.
they all work the pump you see
the engine oil pressure switch runs the pump untill the engine reaches normal pressure
once the pressure is reached to the normal range the computer shuts that circuit off and turns the fuel pump relay on

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turn the ignition to the on position without starting the engine. you should hear the fuel pump running for 5 seconds inside the fuel tank. if not heard replace the engines oil switch. that starts the pumps circuit when the key is turned on. after the engine builds up its normal oil pressure the computer shuts that oil switches circuit off and turns on the fuel pump relay

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The electric fuel pump will have to much pressure for the carb, you need a pressure regulator to cut the pressure down to 5 psi. The reason the fuel pump won't stay running is because it gets its power from the oil pressure sensor by the distributor. Did you install this on the new engine and plug it in? The relay is what runs the pump for 5 seconds and shuts off.

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