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fuel pressure too high! 2008 chevy 4.8

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Old March 3rd, 2022, 6:49 AM
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Default fuel pressure too high! 2008 chevy 4.8
my fuel pressure is at 84 psi , supposed to be 60psi someone mentioned to replace fuel pump driver module .
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Old March 3rd, 2022, 8:56 AM
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Welcome from Florida. You could have a bad fuel pressure regulator. How does it run?
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Old March 3rd, 2022, 10:26 AM
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Originally Posted by oldchevy
Welcome from Florida. You could have a bad fuel pressure regulator. How does it run?
its flooding very badly because its 84 psi instead of 60 apparently the pump is what controls the pressure not the regulator. its a returnless fuel system.
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Old March 3rd, 2022, 10:27 AM
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apparently theres a fuel pump driver module by spare tire but i can not find it...
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Old March 8th, 2022, 12:30 PM
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Originally Posted by oldchevy
Welcome from Florida. You could have a bad fuel pressure regulator. How does it run?
yes it was a wrongly installed fuel pump parts store gave me the one for sam truck with a fpcm my truck the fuel pump is powered threw the pcm !
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