WHY IS THERE ONLY 6 VOLTS COMMING OUT OF THE FUEL RELAY?

1994 Ford F-150

Tiny

RickB

July, 24, 2012 AT 10:39 PM

I have a ford f-150 1994 300 6cyl 4.9L fuel injected twin tank truck, yester day while driving it just shut off, I hot wired the fuel pumps they work fine, I replaced the fuel relay, truck still won't start, 12 volts going into the relay but only 6 volts comming out, pumps need 12 volts to work, do you know whats wrong?

FOUND 94 RELATED QUESTIONS

3 Answers

Tiny

ASEMaster6371

July, 24, 2012 AT 10:42 PM

Disconnect pump and see what the voltage is. The pump may be bad pulling down the voltage.

Roy

Tiny

RickB

July, 24, 2012 AT 10:53 PM

With that done, there is only 6 volts comming out of the fuel relay

Tiny

ASEMaster6371

July, 25, 2012 AT 12:21 AM

It may be a bad relay but before replacing it, disconnect the inertia switch and measure as well.

Roy

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