2000 5.3 Silverado Died. Fuel Pump? Thoughts?

[dougs01gt]

My guess is its the fuel pump. The truck has about 99,800 miles on it. I was driving down the road and it

started sputtering. I gave it more gas and it just sputtered worse. I pulled over and shut it off. I restarted

the truck and reved it and it immediatly died. I restarted it and then it died. and woulnt restart. After sitting

for about 10 mins it would restart but run rough and once i gave it gas it would die.

My guess is its the fuel pump becasue i cant hear it prime when i turn the key on and it was

getting loud. Especially when i was low on fuel.

 

Thanks all

[Draenor]

When was the last time you changed the fuel filter?

[dougs01gt]

When was the last time you changed the fuel filter?

 

Honestly i havnt done it. The previous owner did though. I should do it

but i dont think thats why the truck isnt running now. Then again i could be wrong.

[Draenor]

A clogged fuel filter can cause the pump to fail. If the filter is clogged, it causes the pump to work harder cutting down on its life. The pump may of burned up and now needs replacing.

[henryupinhere]

I agree with Draenor, i might have burned out, it may also have been caused if you run the truck with low levels of fuel, the fuel acts as a coolant of sort in the tank. mine went out a way back and just bought one off ebay ill post the link of the ebay store along with this post

 

 

http://cgi.ebay.com/ebaymotors/NEW-Fuel-Pu...sQ5fAccessories

 

this is the link straight to the fuel pumps auction, i bought the same one from this guy and i have had no problems with the pump. Plus it might save a couple hundred

 

just in case the link dont work look for NEW Fuel Pump Silverado Sierra 99-03 MU1089 MU1516 MU86

the sellers name is world-autoparts and the store is GLOBAL TRADING

[bill190]

These days it is not just a fuel pump, it is a "fuel system"!

 

There are various components to the fuel system which can be tested and then you can see what is working and what is not working. Or see if everything in the fuel system is working OK and it is some other problem.

 

Here is an example of servicing a fuel system. Quite a bit to it!...

http://www.asashop.org/autoinc/june98/techtotech.htm

 

So two ways to go about this.

 

1. Guess and start replacing parts. Maybe you will guess right?

 

2. Get a factory fuel and emissions service manual (service manual set - 4 books - order from GM dealer), then test each component. See what is working and what is not working. Then only replace/fix what is not working.

 

To me option 2 is the least expensive in the long run. It can cost around $150 for a factory service manual set, but then you are not replacing parts which don't need to be replaced, so a big savings in the long run.

[dougs01gt]

Any other thoughts. It doesnt look like i have any fuel pressure. If i push on the schrader valver on the pass sides fuel

rail nothing happens. Should some fuel squirt out? I also get no fuel pump priming when i first turn the key on.

[bill190]

Well if you know the fuel pump should run a bit when the ignition is turned on and you have heard it do this in the past and it no longer does that - plus there is no fuel pressure...

 

Then the first thing I would check is any related fuses. Then I would look in the fuel and emissions manual or electrical diagram manual and see what I would need to do to test power to the fuel pump. Then do that. For example it might say to jumper a couple of connections somewhere or activate the key switch in a certain manner.

 

And I would also be looking for *which* connector to test (with a multimeter) and which color wires, etc.

 

Then if I saw the pump had power, but it was not working, then I would replace the pump. But I would also replace the fuel filter and check the other things in the fuel system. My thinking would be that perhaps something caused the fuel pump to go out, and I would want to check those other things to be sure they were OK.

 

(Preventative maintenance)

 

But most people are not as thorough as I am and would just guess and replace the fuel pump without doing any further testing.

 

So if you're a gambling sort, I would suppose there would be good "odds" that the pump was bad, but it would not be a sure bet without doing any sort of testing.

[2007VictoryRed]

Maybe A tune Up? Its Almost TO 100,000 miles

[svensk]

it's either fuel pressure regulator or the pump itself. Pretty much decided if you cannot hear the pump whine with the key on.

[Green_Monster]

My dad's 2001 Suburban was recalled a few years back for faulty fuel pumps. I don't know if it applied to all 5.3 vehicles or just suburbans. May want to check it out with a dealer.

[dougs01gt]

it's either fuel pressure regulator or the pump itself. Pretty much decided if you cannot hear the pump whine with the key on.

 

Yup. Its the pump. I hooked a meter and im getting 12 volts for about 3 secs for

the prime and when i crank it over im getting 12 volts so the pump is bad.

[HoustonR6ryda]

it's either fuel pressure regulator or the pump itself. Pretty much decided if you cannot hear the pump whine with the key on.

 

Yup. Its the pump. I hooked a meter and im getting 12 volts for about 3 secs for

the prime and when i crank it over im getting 12 volts so the pump is bad.

 

 

 

I bought this pump from this guy(world autoparts) on ebay also for my 99 Sierra-she fired right up. Super easy if you take the bed off-good luck.