No voltage to fuel pump - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Tilt · 10-02-2015, 02:10 PM

Finally got the truck running. Drove it to get the exhaust on it yesterday and back home. Started it up this morning and got half way up the driveway and it dies. Tried to restart and it just turns over. I noticed that the fuel pump wasn't coming on when the keys was first turned on. I checked the fuse and it's good, I have 12V going to the relay, but only about 0.1-0.2V going to the pump while cranking. I swapped the relay with the A/C relay since it was the same and get the same results. Could the computer have crapped out on me? Is there anything else I can check to see if the ecm is bad?

10-02-2015, 02:10 PM	#1
Tilt Registered User Join Date: Jul 2014 Location: Dayton, TX Posts: 335	No voltage to fuel pump Finally got the truck running. Drove it to get the exhaust on it yesterday and back home. Started it up this morning and got half way up the driveway and it dies. Tried to restart and it just turns over. I noticed that the fuel pump wasn't coming on when the keys was first turned on. I checked the fuse and it's good, I have 12V going to the relay, but only about 0.1-0.2V going to the pump while cranking. I swapped the relay with the A/C relay since it was the same and get the same results. Could the computer have crapped out on me? Is there anything else I can check to see if the ecm is bad? __________________ '83 Silverado Step Side '85 GMC short bed. '86 Chevy Step Side Custom Deluxe LQ9/4L80 swap (SOLD) Last edited by Tilt; 10-02-2015 at 05:11 PM.



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