Thread: Installing new fuel pump

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  1. #1 Installing new fuel pump 
    GT Level Member zipper's Avatar
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    To make a long story short, I bought a high flow fuel pump a year or two ago and am now finally able to get to work on the thing. Installing the fuel pump is the last thing that I need to do and then I will be able to drive my Monte again. I ran into a roadblock though. Here's a couple pics of the problem:



    Also, in this pic ^ is that clamp on the brown line pressed on?



    I can't seem to get the brown and black lines off of the fuel pump inside the canister. I don't want to break anything, but I need to disconnect everything so that I can install the actual pump into my fuel pump canister. I did some searching and I saw that someone recommended cutting the brown line and buying this line: http://www.ebay.com/itm/like/130493783608 to replace it.

    What have you guys done to get both lines off?

    NA dyno: 222whp
    Novi 1000 dyno: 348whp
    Novi 2000 dyno: 372whp Best 1/4 mile: 13.2634@105.12mph
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  2. #2 Re: Installing new fuel pump 
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    Those plastic lines are pretty much welded on there by now. Surprised you haven't broken them already! The brown bendy straw line would negate your high flow pump anyway. Just replace both and get that Monte back on the road.
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  3. #3 Re: Installing new fuel pump 
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    I would recommend some Transmission cooling line grade hose, that will handle over 200PSI. Way more than the pump can produce. Not sure about the connection to the top cap though. I just replaced the entire unit when my pump went last year, with a 5.3L unit from a wrecked 2008 GXP.
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  4. #4 Re: Installing new fuel pump 
    Solving problems BrandonHall10's Avatar
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    When I did my pump install I had to cut the original corrugated line off. I replaced it with EFI rubber hose.

    Your local parts store should have fuel hose rated for EFI pressure. Also should have special hose clamps too. More of a band clamp vs. the traditional worm gear type hose clamp. Whether or not you feel the need for them is up to you.

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  5. #5 Re: Installing new fuel pump 
    GT Level Member zipper's Avatar
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    Thank you for the help guys. Does the little black line next to it have something to do with the venturi pump? I can't get that line off either.
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  6. #6 Re: Installing new fuel pump 
    Solving problems BrandonHall10's Avatar
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    Oh, you got a venturi can. Yes. That line feeds the venturi jet. Is there enough tube to cut it flush off the old pump and still have enough to push on to the new one?
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  7. #7 Re: Installing new fuel pump 
    GT Level Member zipper's Avatar
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    Yeah, all 98-99 Monte Z34's have the venturi canister even though they're L36s. I might be able to cut the line and see if it stretches. Is that what you guys typically do?
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  8. #8 Re: Installing new fuel pump 
    GT Level Member zipper's Avatar
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    Okay, I got it all together and am just about to install the rewire kit. Got another question though. What is this sensor on the canistor:


    The reason I ask is because my rewire doesn't have anything to plug into that.
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  9. #9 Re: Installing new fuel pump 
    Donating Users timboku's Avatar
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    Its part of the evap system
    2002 GTP..DD.. Topswapped Gen V L26, XP cam, Full Size IC, E85, 2.6 Pulley,SD Headers, K&N Intake, N*/Lq4,FP Rewire, TEP Trans, F body Fronts, GXP Rear Brakes, LE Spoiler, AGXs with vogtland springs, bonni gxp rims, Timboku Tuned
    1995 Cutlass Supreme Convertible...Soon to be L32Swapped.....2005 GXP Stock
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  10. #10 Re: Installing new fuel pump 
    Solving problems BrandonHall10's Avatar
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    Fuel tank pressure sensor. Evap stuff.
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  11. #11 Re: Installing new fuel pump 
    GT Level Member zipper's Avatar
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    Is it a big deal if it's not plugged in?
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  12. #12 Re: Installing new fuel pump 
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    My best guess is, it will probably trigger a MIL. I can't imagine it would cause it to not run, or some other major drivability issue though. Why not just plug it in?

    http://www.obd-codes.com/p0453
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  13. #13 Re: Installing new fuel pump 
    Donating Users timboku's Avatar
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    Just leave it in but leave it unplugged. You can tune the code out if you it trips an ses light but it is just for emissions/evap.
    2002 GTP..DD.. Topswapped Gen V L26, XP cam, Full Size IC, E85, 2.6 Pulley,SD Headers, K&N Intake, N*/Lq4,FP Rewire, TEP Trans, F body Fronts, GXP Rear Brakes, LE Spoiler, AGXs with vogtland springs, bonni gxp rims, Timboku Tuned
    1995 Cutlass Supreme Convertible...Soon to be L32Swapped.....2005 GXP Stock
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  14. #14 Re: Installing new fuel pump 
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    Okay, that's what I was hoping to hear. The rewire kit that I have doesn't have the correct plug for the sensor. I'll just leave it unplugged then and when I get it dyno-tuned I'll have it removed.
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