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Old 03-13-2022, 02:54 PM   #1
Rusty trucker
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No power to the fuel pump

My 97 Chevy K1500 with a 5.7 lost power to the fuel pump driving down the road. All the fuses are good.
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Old 03-13-2022, 02:57 PM   #2
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Re: No power to the fuel pump

Is there power to the relay?
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Old 03-13-2022, 03:06 PM   #3
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Re: No power to the fuel pump

yes, I do have power at the relay
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Old 03-13-2022, 03:34 PM   #4
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Re: No power to the fuel pump

Could be oil pressure switch. Can you jump power direct to the pump off the battery (or other)?
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Old 03-13-2022, 03:50 PM   #5
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Re: No power to the fuel pump

Could try swapping the relay with another in the box and see if it's bad. Definitely check codes, the cam or crank sensor could be bad so the computer doesn't see the engine cranking. Oil pressure switch is a possibility too as mentioned.
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Old 03-13-2022, 03:56 PM   #6
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Re: No power to the fuel pump

I just was messing with the relay checking for power and ground, now I have power to the pump. Starts right up. Will be ordering a new relay tomorrow. Where do I find the oil pressure switch on the motor? Might change that as well just to be on the safe side with 170000 miles on it

Thanks
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Old 03-19-2022, 01:20 PM   #7
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Re: No power to the fuel pump

replaced the fuel pump relay and the oil pressure switch and so far so good
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Old 03-19-2022, 02:55 PM   #8
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Re: No power to the fuel pump

Good to hear. Where is the OPS, back of intake area? I only worked on diesels and that's whare they are (D/S)
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"

GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project)
GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling)
Tim

"Don't call me a redneck. I'm a rough cut country gentleman"

R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~
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Old 03-19-2022, 07:20 PM   #9
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Re: No power to the fuel pump

Yes, just below the distributor
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