Calling all fuel injection gurus - The 1947 - Present Chevrolet & GMC Truck Message Board Network

87Lowrider · 10-11-2008, 08:48 AM

OK... I've got a very annoying fuel pump fuse blowing issue.

Some say it's overheating since I am regulating the pressure down to 4 or 5 psi. I don't disagree but I'm not ruling out a broken wire maybe shorting out somewhere in the harness. The problem is intermittent at best but happens at the worst possible time like yesterday in the middle of an intersection. I changed the fuse in the intersection before the light changed... (I'M SO FAST, I CAN TURN OUT THE LIGHT AND JUMP IN THE BED BEFORE THE ROOM GETS DARK) hehe.

Anyway, 1987, as you know was the first year for TBI and the harness and computer are still in place. I just have it tucked behind the engine. I'm considering updating the 1976 454 that's in the truck now with EFI.

Anyone done it? What kinda issues can I expect? This will be my winter project, I'm sure... (after Dec 13th when my little girl walks down the isle)

Thanks!

Kenny

10-11-2008, 08:48 AM	#1
87Lowrider Navy Radioman Veteran Join Date: Jul 2007 Location: Western Kentucky Posts: 1,356	Calling all fuel injection gurus OK... I've got a very annoying fuel pump fuse blowing issue. Some say it's overheating since I am regulating the pressure down to 4 or 5 psi. I don't disagree but I'm not ruling out a broken wire maybe shorting out somewhere in the harness. The problem is intermittent at best but happens at the worst possible time like yesterday in the middle of an intersection. I changed the fuse in the intersection before the light changed... (I'M SO FAST, I CAN TURN OUT THE LIGHT AND JUMP IN THE BED BEFORE THE ROOM GETS DARK) hehe. Anyway, 1987, as you know was the first year for TBI and the harness and computer are still in place. I just have it tucked behind the engine. I'm considering updating the 1976 454 that's in the truck now with EFI. Anyone done it? What kinda issues can I expect? This will be my winter project, I'm sure... (after Dec 13th when my little girl walks down the isle) Thanks! Kenny __________________ 1987 Chevrolet R10 Silverado BBC Build thread - SOLD 1986 GMC Sierra Classic - SOLD 1957 Chevy Step Side Daily Driver; 2005 Chevrolet Silverado 4x4 Z71 Stepside - SOLD 2005 Chevrolet Tahoe Z71 Last edited by 87Lowrider; 10-12-2008 at 12:57 PM.



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