FUEL DELIVERY

2008 Ford Focus

Tiny

a1fmitch

July, 7, 2014 AT 7:30 AM

What is the factory specification for fuel psi? Am I correct in thinking the Fuel Pump Driver Module pulse modulates voltage to the fuel pump? Is it more common for a fuel pump to fail opposed to the driver module?

2 Answers

Tiny

hmac300

July, 7, 2014 AT 8:35 AM

This cold be a tossup I've seen both fail but not at same time. 55psi is what it should be with key off engine running. For module if you scan it that should show that.

Tiny

hmac300

July, 7, 2014 AT 8:36 AM

Key on sorry lol

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