Changing fuel pump in a 1996 Riviera - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-11-2012, 02:24 PM   #21
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Look over the plug real close. There could be corrosion causing a lot of resistance. Test all the wires to make sure you don't have a short.
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Old 01-11-2012, 02:36 PM   #22
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Thanks for the info I will check into those. Car has been running great until today.
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Old 01-11-2012, 02:47 PM   #23
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Even a frayed wire can cause problems. Causes more resistance and can cause a slow blow of the fuse. Or worse yet, no blow, but over heat and fire.
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Old 01-11-2012, 02:56 PM   #24
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two things can happen to cause your issues, there is something drawing too much current,which takes out relays and fuses. either one- the power wire to the pump is sporadically shorting to ground (chaffed wires to ground), or two- your pump is drawing too much current, which motors do after they start to wear out. i would lean toward the first one though because you said the one time it was blowing fuses with the pump unplugged
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Old 01-11-2012, 03:05 PM   #25
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Quote:
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Even a frayed wire can cause problems. Causes more resistance and can cause a slow blow of the fuse. Or worse yet, no blow, but over heat and fire.
Yeah I dont need a fire Not really sure what the issue is exactly. But its having a toll on the pump relay. Guess get a new relay for now and recheck everything from the front to the back.

Just wondering if it is the fuel pump causing the problems. But the car drives great and when I hit the gas it does not hesitate or miss. I think you are right and thinking its wiring issues over anything to do with the pump.
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Old 01-11-2012, 03:25 PM   #26
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two things can happen to cause your issues, there is something drawing too much current,which takes out relays and fuses. either one- the power wire to the pump is sporadically shorting to ground (chaffed wires to ground), or two- your pump is drawing too much current, which motors do after they start to wear out. i would lean toward the first one though because you said the one time it was blowing fuses with the pump unplugged
Thanks I think if its a short it will be between the relay and the pump. Im not going to rule the pump out though. I did remove the harness to the pump and as stated the fuse kept popping still. But the pump may be the problem. But want that as a last resort do to they are $300 .. Hope to find the problem. I will be checking everything tomorrow. I am using my GF'* car and hoping to find resolve with this

I do belive there is a short somewhere so that will be my starting point is tracking wires down. But need to get a new relay and restart my detecting points in hopes to get it figured out.

Thanks for the advice on it
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Old 01-11-2012, 05:12 PM   #27
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Update: Put in a new relay and its blowing the fuses even with the new relay. The second I turn the key it blows the fuses..
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Old 01-11-2012, 05:19 PM   #28
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Sounds like a dead short. And the fuse does not blow with relay out?
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Old 01-11-2012, 08:59 PM   #29
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Sounds like a dead short. And the fuse does not blow with relay out?
I cant remember if it blew when I removed the fuse. I did go ahead and get a tested fuel Pump this evening for $100 so If just in case.
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Old 01-12-2012, 10:38 AM   #30
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Hello, here is a update: I pulled the relays out and the fuel pump fuse popped. So its now blowing with the relay removed. So the problem I think is between the the Ignition and fuel pump fuse.

yesterday when the car died it was idling when I got to N/* train yard. I parked it and left it running. I was inside the building no more than 20 minutes. When I got back to it I noticed it died. I tried to restart it. It didnt start. I rechecked the fuses. Found the pump fuse popped. I changed it. the new fuse popped upon turning the key. I placed another fuse. Car started for 30 seconds then that fuse popped.

Today I removed the relays and replaced the fuse and turn the key and it popped the fuses with the fuel pump relay out.
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