Bad fuel pump? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

C15_Sierra · 03-27-2012, 02:21 PM

My truck quit on the highway coming home from work. I was getting on it (as much as you can with 2.73s) to merge with highway traffic, and the truck just stopped. The fuse for the ECM kept blowing, so I got it towed. Once at home, I replaced it once more and pulled the fuel pump relay and fuse didn't blow...so, bad fuel pump I'm guessing

I'm running an otherwise-stock 5.3 with long tubes and an intake. I used an ACDelco EP241, which I know is a TPI application, but came recommended by LS swappers. Did I get a bad pump, or should I use a pump like an EP381?

Thanks!

C15_Sierra · 03-28-2012, 11:42 AM

Well, on second inspection, looks like my pump wiring got too close to the exhaust and melted on the pipe, shorting out the circuit.

Guess my faith has been restored (somewhat) in my choice of pump

ls1nova71 · 03-28-2012, 01:15 PM

The TPI pump isn't really the right pump, they run about 10 PSI or so less than what an LS engine runs, but for what its worth, I put one in my Nova when I swapped to the LS1 because the car had a TPI before. That was in 2000. The car still runs with it and the swap has over 130,000 miles on it.
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03-27-2012, 02:21 PM	#1
C15_Sierra Registered User Join Date: Apr 2011 Location: Hartford CT Posts: 223	Bad fuel pump? My truck quit on the highway coming home from work. I was getting on it (as much as you can with 2.73s) to merge with highway traffic, and the truck just stopped. The fuse for the ECM kept blowing, so I got it towed. Once at home, I replaced it once more and pulled the fuel pump relay and fuse didn't blow...so, bad fuel pump I'm guessing I'm running an otherwise-stock 5.3 with long tubes and an intake. I used an ACDelco EP241, which I know is a TPI application, but came recommended by LS swappers. Did I get a bad pump, or should I use a pump like an EP381? Thanks! __________________ -Steve 1980 GMC C15 Sierra LWB Dark Carmine Red/Carmine Int Was: 250/3spd (1980-88), then a 305/TH350 (1988-2011) Now: 5.3/4L60E, 2.73 12-bolt open rear

03-28-2012, 11:42 AM	#2
C15_Sierra Registered User Join Date: Apr 2011 Location: Hartford CT Posts: 223	Re: Bad fuel pump? Well, on second inspection, looks like my pump wiring got too close to the exhaust and melted on the pipe, shorting out the circuit. Guess my faith has been restored (somewhat) in my choice of pump __________________ -Steve 1980 GMC C15 Sierra LWB Dark Carmine Red/Carmine Int Was: 250/3spd (1980-88), then a 305/TH350 (1988-2011) Now: 5.3/4L60E, 2.73 12-bolt open rear

03-28-2012, 01:15 PM	#3
ls1nova71 Registered User Join Date: Dec 2009 Location: Independence Mo Posts: 4,119	Re: Bad fuel pump? The TPI pump isn't really the right pump, they run about 10 PSI or so less than what an LS engine runs, but for what its worth, I put one in my Nova when I swapped to the LS1 because the car had a TPI before. That was in 2000. The car still runs with it and the swap has over 130,000 miles on it. Posted via Mobile Device __________________ My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html

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