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  1. #1

    Default What kills the fuel pump?

    Can you predict the service life?

    I still have the original fuel pump. I don't go down below 1/8 tank for fear of starving the fuel pump. Should i just go ahead and get a new fuel pump and get it replaced for preventive?
    2011 Chevy Silverado LT 4WD 25k miles
    2001 Suburban 2WD, 5.3, V8 176k miles
    1993 964
    1996 318TI

  2. #2

    Default

    Those pumps can tend to go out around about your mileage. I went through 3 in 3 weeks around 200k. If you do replace it, I'd go with something other than a GM brand pump and get the upgraded socket for it as those tend to crap out too.



    If at first you don't succeed, chances are, you are using too small of a cheater bar

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  3. #3

    Default

    Quote Originally Posted by rileyjr16 View Post
    Those pumps can tend to go out around about your mileage. I went through 3 in 3 weeks around 200k. If you do replace it, I'd go with something other than a GM brand pump and get the upgraded socket for it as those tend to crap out too.
    That's what I'm afraid of. With 151k miles, don't know when it will go out. I usually drive long distances on weekends.

    Which fuel pump has the upgraded socket? What is wrong with the factory socket? Care to share why you went through 3 pumps in 3 weeks?
    Thanks.
    2011 Chevy Silverado LT 4WD 25k miles
    2001 Suburban 2WD, 5.3, V8 176k miles
    1993 964
    1996 318TI

  4. #4

    Default

    The upgraded socket is the male part that plugs into the pump. I forgot who makes it and where you can find it so I'll have to ask my brother on that one. When I put the last pump in thats when I changed the male socket to a much better one. As for going through 3 pumps in 3 weeks, the original went out on I-10, its replacement went out at Raising Cane's, and the replacement for that went out in the driveway. Had about 1/2 tank each time when they went out. Still going strong



    If at first you don't succeed, chances are, you are using too small of a cheater bar

    Current:
    1999 GMC Sierra SLT Z71 | 5.3 Vortec | Spectre Cold Air Intake | TransDapt TBS | Hypertech 30005 Tune | 2005 Chevy Tails | Denali headlights | AWS Bug Shield | 265/75/16 Mastercraft Courser A/T | "Ghetto" painted tailgate | Boss HD Speakers | 2005 Overhead Console | Dual Thrush Turbo Mufflers
    Future:
    Bigger Amp Alternator | Electric Fans | Oil/Trans Fluid cooler | Re-done exhaust | Paint | Interior Restoration/upgrade with newer model stuff | Window Visors (In channel) | Tint | Low-Profile Tool Box | LEDs throughout stock cab locations | And whatever is spurr of the moment
    US Navy Sailor :sign0011:

  5. #5

    Default

    The leading cause of fuel pump failure is running the fuel below 1/4 tank of gas. A fuel pump isn't something I would suggest replacing until it is necessary. It may run another 40,000 miles.
    "It went together didn't it? Well then there has to be a way to take it apart!" - Me.

    Check out my image gallery HERE.



    "The true measure of a man is how he treats someone who can do him absolutely no good." ~Samuel Johnson (1709-1784)

  6. #6

    Default

    The only reason to replace it now, is if you are worried about getting stuck somewhere. If you don't mind that part, you mind as well let it break before you replace it.
    I like you.

  7. #7

    Default

    Quote Originally Posted by rileyjr16 View Post
    The upgraded socket is the male part that plugs into the pump. I forgot who makes it and where you can find it so I'll have to ask my brother on that one. When I put the last pump in thats when I changed the male socket to a much better one. As for going through 3 pumps in 3 weeks, the original went out on I-10, its replacement went out at Raising Cane's, and the replacement for that went out in the driveway. Had about 1/2 tank each time when they went out. Still going strong
    That was not fun, esp, with 1/2 tank full each time. I am afraid it might happen on a full tank.
    I'll just get a new Delco fuel pump and put it in the back storage just in case.

    ---------- Post added at 11:25 AM ---------- Previous post was at 11:21 AM ----------

    Quote Originally Posted by moogvo View Post
    The leading cause of fuel pump failure is running the fuel below 1/4 tank of gas. A fuel pump isn't something I would suggest replacing until it is necessary. It may run another 40,000 miles.
    That's what i figure. The fuel basically keeps the pump cool. If I keep the tank at or above 1/4 full, it may prolong it's service life. Besides, I already replaced the external fuel filter and that may help as well.

    ---------- Post added at 11:26 AM ---------- Previous post was at 11:25 AM ----------

    Quote Originally Posted by janikphoto View Post
    The only reason to replace it now, is if you are worried about getting stuck somewhere. If you don't mind that part, you mind as well let it break before you replace it.
    I will just buy a new fuel pump and put it in the rear storage as back up.
    2011 Chevy Silverado LT 4WD 25k miles
    2001 Suburban 2WD, 5.3, V8 176k miles
    1993 964
    1996 318TI

  8. #8

    Default

    Quote Originally Posted by janikphoto View Post
    The only reason to replace it now, is if you are worried about getting stuck somewhere. If you don't mind that part, you mind as well let it break before you replace it.
    Agreed. A brand new one could go out tomorrow, and with the quality of parts out there today, I wouldn't change it until it needed to be changed. the major cause of fuel pump failure is people running their tanks to fumes before refilling.

    Here's why that is bad...

    Fuel pumps on fuel injected vehicles are generally found in the fuel tank. the liquid gasoline is responsible for cooling the pump, and to keep it from overheating. Once the fuel drops below 1/8 to 1/4 tank, there is no longer sufficient liquid left in the tank to cool the unit. As a result, the pump gets hot and the plastic impellers inside start to melt and warp. They are designed to be cooled by the fuel.

    I had a Suburban with over 320,000 miles on it and never put a pump on it. My '03 had almost 200,000 on it and never needed one. As long as you don't make a habit of running the tank dry, they will last a LONG time.
    "It went together didn't it? Well then there has to be a way to take it apart!" - Me.

    Check out my image gallery HERE.



    "The true measure of a man is how he treats someone who can do him absolutely no good." ~Samuel Johnson (1709-1784)

  9. #9

    Default

    I did some research on the different available brands. I went with a Bosch unit. A little more money, but the price on Amazon is competitive with the AC Delco part locallly. Locally the Bosch fuel pump cost twice as much.

    So far it has been very quiet.

  10. #10

    Default

    Quote Originally Posted by Kraziken View Post
    I did some research on the different available brands. I went with a Bosch unit. A little more money, but the price on Amazon is competitive with the AC Delco part locallly. Locally the Bosch fuel pump cost twice as much.

    So far it has been very quiet.
    I wil probably go with the Bosch too.

    I used to have a Porsche 944 S2 with 240k miles on the original fuel pump when I sold it. The new owner is still driving the car now with over 250k miles.

    Is this the one?Click image for larger version. 

Name:	Bosch fuel pump.jpg 
Views:	277 
Size:	52.9 KB 
ID:	38769
    2011 Chevy Silverado LT 4WD 25k miles
    2001 Suburban 2WD, 5.3, V8 176k miles
    1993 964
    1996 318TI

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