No power to fuel pump relay when key switch on?

Tiny
MRCMACK5
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Okay, if I jump the gray and orange wires the fuel pump comes on without the key on.
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Friday, January 31st, 2025 AT 3:09 PM
Tiny
KEN L
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Okay, with the wires jumped does the engine start?
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Saturday, February 1st, 2025 AT 10:00 AM
Tiny
MRCMACK5
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I’m sure it will I’ll have to check when I get home probably in an hour or so If it does run the bad oil switch?
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Saturday, February 1st, 2025 AT 10:03 AM
Tiny
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Yes it does run with those jumped.
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Saturday, February 1st, 2025 AT 1:24 PM
Tiny
MRCMACK5
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Okay, I replaced the oil pressure switch it now works but do not have the 2 sec prime from computer.
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Saturday, February 1st, 2025 AT 3:02 PM
Tiny
KEN L
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It will not prime every time, so can you drive the truck now? I would let the truck sit and then it should prime.
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Sunday, February 2nd, 2025 AT 8:52 AM

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