Thread: Project shrimp boat (bubba gumpís)

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  1. #1 Project shrimp boat (bubba gumpís) 
    Senior Member Grand Slam West Planner
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    This is my post on a 2000 WJ 4.7 for a customer that doesnít work on his own stuff but wants the perfect Mexico runner...


    First he got some iro critical path 7Ē, 4:56 gears, spartan rear locker custom rear 44hd skid and iro truss
    Along with some Hanson bumpers.. (of which are terrible)



    And a custom 31 gal fuel tank...





    So all his tools would fit he wanted me to leave a little space in the original tire well

    And because of the new tank it needed a new gauge to work with the sending unit and to keep the old one reading to not throw off the jeep computer I tied it to the side of the new sending unit.




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    Last edited by Stealth Crawler ZJ; 07-31-2018 at 12:49 PM.
    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
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  2. #2 Project shrimp boat (bubba gumpís) 
    Senior Member Grand Slam West Planner
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    So far everything runs great... in town
    Get it out on the highway and let the heat problems begin

    It had a winch mounted to the front and license plate to the front of that so of course the air flow was blocked hence the main over heating issue so the license plate was moved and the fairlead lowered to let more air flow and I cut out the center of the cross bar to allow even more flow

    View from the lower openings on the bumper.



    Not enough so I removed the winch, cut out the back of the grill and that at least at this point takes care of the engine overheating...


    Now the bigger issue
    The fuel is vapor locking something fierce killing the engine after the jeep gets heat soaked and has run at highway speed for at least and hour at which point I release air pressure at the fuel rail and then it will start back up again but will happen more often once itís done it until I cools


    The codes that come in and donít like to stay clear...

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    Last edited by Stealth Crawler ZJ; 07-31-2018 at 02:53 PM.
    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
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  3. #3 Re: Project shrimp boat (bubba gumpís) 
    Senior Member Grand Slam West Planner
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    Just curious if I put a inline fuel cooler... but maybe thatís not the problem.
    Itís frustrating enough heís considered going back to the stock tank but Iím not entirely certain the tank or pump are the cause.
    Any thoughts?


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    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
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  4. #4 Re: Project shrimp boat (bubba gumpís) 
    Senior Member Grand Slam West Planner
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    So Iím on a 2 hour test drive and it has done fine at interstate speeds but when I started to slow down coming into a town almost to my turnaround point it vapor locked, died and after 3 attempts to restart I got it to fire drove it to the nearest exit and when I got it to a safe place it died again and refused to start at all with major pressure at the schrader valve on the fuel rail Iím just trying to make it run again...


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    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
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  5. #5 Re: Project shrimp boat (bubba gumpís) 
    Senior Member Grand Slam West Planner Ted_Z's Avatar
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    Fix the evap leak (P0455). I had that code on my WJ and it would surge and die occasionally. There was a crack in a hose near the evap canister.
    -Ted Z
    '97 Grand Cherokee Laredo w/ stuff
    '02 Grand Cherokee Limited w/ less stuff
    Quote Originally Posted by Cody View Post
    everytime someone makes a bumper with a stinger, God kills 6 baby Koala's.
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  6. #6 Re: Project shrimp boat (bubba gumpís) 
    Senior Member Grand Slam West Planner Ted_Z's Avatar
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    Also the lean fuel system code could point to a fuel delivery issue. Maybe the non factory fuel pump can't keep up?
    -Ted Z
    '97 Grand Cherokee Laredo w/ stuff
    '02 Grand Cherokee Limited w/ less stuff
    Quote Originally Posted by Cody View Post
    everytime someone makes a bumper with a stinger, God kills 6 baby Koala's.
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  7. #7 Re: Project shrimp boat (bubba gumpís) 
    Senior Member Grand Slam West Planner Ted_Z's Avatar
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    I forgot to add that running lean will contribute to the overheating problem. Also ditch that silly aftermarket grill, it too could be hurting air flow.
    -Ted Z
    '97 Grand Cherokee Laredo w/ stuff
    '02 Grand Cherokee Limited w/ less stuff
    Quote Originally Posted by Cody View Post
    everytime someone makes a bumper with a stinger, God kills 6 baby Koala's.
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  8. #8 Project shrimp boat (bubba gumpís) 
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    Quote Originally Posted by Ted_Z View Post
    Also the lean fuel system code could point to a fuel delivery issue. Maybe the non factory fuel pump can't keep up?
    I just matched the new pump with the same 140psi rating the Jeep calls for
    Or should I go with a higher psi so itís never maxed?

    Quote Originally Posted by Ted_Z View Post
    I forgot to add that running lean will contribute to the overheating problem. Also ditch that silly aftermarket grill, it too could be hurting air flow.
    Iíve told them to but they donít want to spend $$ for another grill
    Last edited by Stealth Crawler ZJ; 07-31-2018 at 07:18 PM.
    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
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  9. #9 Project shrimp boat (bubba gumpís) 
    Senior Member Grand Slam West Planner
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    So I made it back to town and again highway speed was fine until I slowed down at all then it choked and died. Release all the air from the rail wait a few then it would start and go but die again upon slowdown. Now at lower rpm it wonít even go 1 block without dying
    Iím inching my way back to the shop...
    and itís only 98į! 🤨
    Last edited by Stealth Crawler ZJ; 07-31-2018 at 08:20 PM.
    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
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  10. #10 Re: Project shrimp boat (bubba gumpís) 
    Senior Member Grand Slam West Planner Ted_Z's Avatar
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    Do you have a way you can put a gauge on the fuel rail and read it while you're driving?
    -Ted Z
    '97 Grand Cherokee Laredo w/ stuff
    '02 Grand Cherokee Limited w/ less stuff
    Quote Originally Posted by Cody View Post
    everytime someone makes a bumper with a stinger, God kills 6 baby Koala's.
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  11. #11 Re: Project shrimp boat (bubba gumpís) 
    Senior Member Grand Slam West Planner
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    Quote Originally Posted by Ted_Z View Post
    Do you have a way you can put a gauge on the fuel rail and read it while you're driving?
    Not that I know of but Iíll check tomorrow.
    It doesnít do it at all until the jeep has been driven for at least an hour in hot weather... then holy s@#$&#!!!



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    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
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  12. #12 Re: Project shrimp boat (bubba gumpís) 
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    How is the tank vented? Whats the gpm of the pump? And whats the condition of the fuel pressure regulator?

    When it dies do u have pressure in the tank?

    Also check to make sure there isnt a leak on the fuel pickup. You could be sucking air into the fuel system.
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  13. #13 Project shrimp boat (bubba gumpís) 
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    Quote Originally Posted by Kraqa View Post
    How is the tank vented? Whats the gpm of the pump? And whats the condition of the fuel pressure regulator?

    When it dies do u have pressure in the tank?

    Also check to make sure there isnt a leak on the fuel pickup. You could be sucking air into the fuel system.
    Tank is vented out a tube parallel to the filler neck (factory wj)

    Iím told the gpm was matched to the stock but Iím curious if it wasnít or if it was just pressure that was matched

    Pressure regulator is the filter as stock to the wj

    No pressure in the tank I did check that and even left the cap off for a bit to see if that would help

    Double checked and resealed any and all connections on the pickup side and not finding any air draw
    Last edited by Stealth Crawler ZJ; 08-01-2018 at 11:44 AM.
    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
    Reply With Quote  
     

  14. #14 Re: Project shrimp boat (bubba gumpís) 
    Senior Member Grand Slam West Planner
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    Also there is another thing going on with this heap...
    it may be something to do with the fact itís a 2000
    but 4:56 gears and 33Ē tires should work together to return to stock configuration right?
    Speedo is off by a few mph but it wonít drop below 2500rpm at 70-75 mph and just in general seems to set at higher rpm no matter what.
    Could it be the trans in need of a change?
    4.7 and barely 100k on the clock



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    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
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  15. #15 Re: Project shrimp boat (bubba gumpís) 
    Senior Member Ken L's Avatar
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    A question I have about the overheating is did run hot and vapor lock before all the mods? And if the customer says no, are they telling the truth?
    Ken L
    '96 ZJ with stuff
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  16. #16 Re: Project shrimp boat (bubba gumpís) 
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    Quote Originally Posted by Ken L View Post
    A question I have about the overheating is did run hot and vapor lock before all the mods? And if the customer says no, are they telling the truth?
    All unknown as he bought it in Kansas drove it to our shop in November and we put the main lift/bumpers on in January-February and itís been here most of the time
    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
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  17. #17 Re: Project shrimp boat (bubba gumpís) 
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    Did a few more mods to help this

    Found a stock replacement pump so it matches lph and psi rating and mounted it to the tanks sending unit and removed the other inline external pump that was added
    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
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  18. #18 Re: Project shrimp boat (bubba gumpís) 
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    The external pump may have run out of oomph after having to pull fuel up and out of the tank for so long. They are often designed for pushing more than pulling.

    Sent from my SAMSUNG-SM-G930A using Tapatalk
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  19. #19 Re: Project shrimp boat (bubba gumpís) 
    Senior Member Grand Slam West Planner
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    Test drive today went well no more vapor locking new pump in tank did the trick it seems!

    And now the cruise button wonít operate... this freakin Jeep
    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
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  20. #20 Re: Project shrimp boat (bubba gumpís) 
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    I just had to replace the brake light switch on mine. The cruise was acting up intermittently and I noticed the brake lights were staying on at times. New switch fixed both issues.

    Sent from my SAMSUNG-SM-G930A using Tapatalk
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  21. #21 Re: Project shrimp boat (bubba gumpís) 
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    Quote Originally Posted by Yjsaabman717 View Post
    I just had to replace the brake light switch on mine. The cruise was acting up intermittently and I noticed the brake lights were staying on at times. New switch fixed both issues.

    Sent from my SAMSUNG-SM-G930A using Tapatalk
    I had my 02í do that but my cruise still came on just wouldnít set.
    This one wonít even come on


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    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
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  22. #22 Re: Project shrimp boat (bubba gumpís) 
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    Gotcha.

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  23. #23 Re: Project shrimp boat (bubba gumpís) 
    Senior Member Grand Slam West Planner
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    Noticing a rear driveline vibe at highway speed so I checked angles and corrected to match each other at 9.6į and 9.5į but seems to have made it worse... t-case 1 1/4Ē drop kit messing with that?


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    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
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  24. #24 Re: Project shrimp boat (bubba gumpís) 
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    If it has a slip yoke the t case and pinion need to be parallel.

    Sent from my XT1650 using Tapatalk
    01 WJ
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  25. #25 Re: Project shrimp boat (bubba gumpís) 
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    Quote Originally Posted by fluxcap View Post
    If it has a slip yoke the t case and pinion need to be parallel.

    Sent from my XT1650 using Tapatalk
    As what Iím trying to get but itís worse now


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    "ZJ's were designed with the intention to take 1 really good hit, and fold up. As long as the occupants walked away, it was a success. In the wheeling world, we expect our vehicles to take multiple really good hits, drive out of it, and run the obstacle again!"
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