The truck would not start, no sound from fuel pump. I took the bed off and replaced the pump, but still have no pump noise when I turn the key on. I have switched fuel pump relays, still nothing! I can jump power to the pump and it WILL RUN, but not sure what to check next. PLEASE HELP!
Have you checked the fuse. and the grounds. check it has voltage to the pump using the live feed and the shell if you have power then its the earth wire. if you still have now power check the fuse, take out the fuse and check both side to see if there is voltage. if you have voltage but the fuse looks good. it could still be the fuse they can crack and look good but are not.
SOURCE: 92 Chevy Suburban Electrical Fuel System
I assume the fuel pump fuse is good?
The only time voltage will be sent to the fuel pump will be the first 2 to 3 seconds if the starter is not engaged. You will want to crank the engine over and check for voltage on the load side of the relay, circuit #30 at the relay.
Let me know after you check.
Regards,
SOURCE: 2000 GMC 2500 FUEL PUMP?
it sounds like youlost your fuel pump. i had it happen on a dually and had to do the same thing you are doing to fix it, mine had dual tanks so i ended up replacing both
SOURCE: 98 Astro Van Intermittant Power to Fuel Pump Relay
I've been bitten by this twice! The culprit both times was the connector plug under the van infront of the fuel tank. the second time the connector pin and socket came loose inside the plug itself,( workes for a while then dosen't). Make sure there is good secure contact made in all sockets in this plug, and the pins are held where they need to be inside the plug itself.
SOURCE: how to install fuel pump in chevy 2003 astro van
Go to the autozone website at autozone.com and register your vehicle. It's free and will give you access to an online repair manual for your vehicle. The procedures for changing the fuel pump should be available there. Sure hope this helped and best wishes.
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