Truck won’t stay running

Discussion in 'Stock Performance/Mechanical' started by XrunnerrRTR, Oct 21, 2017.

  1. XrunnerrRTR

    XrunnerrRTR New Member

    Joined:
    Jul 28, 2017
    Messages:
    12
    Likes Received:
    0
    OK so I have been working on this truck for the past day. The problem is the truck starts and stays running for about two seconds and then dies. I just replace a fuel pump because I thought that was the problem but that’s not the case. I’m still having an issue where the truck starts but then dies immediately. If I give it throttle and tap the gas is stays running for a little bit but then dies. Does anyone know what the problem is?
     
  2. NHXRUNNER

    NHXRUNNER "New Hampster"
    Staff Member

    Joined:
    Jul 30, 2007
    Messages:
    7,593
    Likes Received:
    159
    What were the symptoms that caused you to change the pump? Was the truck running before the fuel pump change? What fuel pump did you replace it with?
     
  3. blackx-runner

    blackx-runner "White Flash"

    Joined:
    Jan 14, 2007
    Messages:
    7,580
    Likes Received:
    13
    Any codes? Check vacuum lines, maf sensor?
     
  4. XrunnerrRTR

    XrunnerrRTR New Member

    Joined:
    Jul 28, 2017
    Messages:
    12
    Likes Received:
    0
    The starting then stalling immediately was the initial problem. Truck died on me while driving into work at 30mph. Pulled over and tried to start it by no luck and that’s when I towed it home. Didn’t hear fuel pump prime, check fuse (Good) , relay (Good) so decided to change to fuel pump
     
  5. XrunnerrRTR

    XrunnerrRTR New Member

    Joined:
    Jul 28, 2017
    Messages:
    12
    Likes Received:
    0
    I replaced it with a Denso fuel pump
     
  6. XrunnerrRTR

    XrunnerrRTR New Member

    Joined:
    Jul 28, 2017
    Messages:
    12
    Likes Received:
    0
    No codes , vacuum lines should be good. And how to check MAF sensor ? Truck dies immediately. I don’t have scanner
     
  7. XrunnerrRTR

    XrunnerrRTR New Member

    Joined:
    Jul 28, 2017
    Messages:
    12
    Likes Received:
    0
    I replaced it with a Denso fuel pump
     
  8. XrunnerrRTR

    XrunnerrRTR New Member

    Joined:
    Jul 28, 2017
    Messages:
    12
    Likes Received:
    0
     
  9. rexrunner

    rexrunner Active Member

    Joined:
    Jan 13, 2007
    Messages:
    2,578
    Likes Received:
    5
    Check the relay. There pricey but thats a common issue. Thanks Toyota
     
    XrunnerrRTR likes this.
  10. rexrunner

    rexrunner Active Member

    Joined:
    Jan 13, 2007
    Messages:
    2,578
    Likes Received:
    5
    In other words change the relay, it works, but when gets warm, let's go and the longer it cools the longer it runs. There a horrible design
     
  11. rexrunner

    rexrunner Active Member

    Joined:
    Jan 13, 2007
    Messages:
    2,578
    Likes Received:
    5
    Have you tried the spare key by chance? Could be an ign issue or do you have an alarm installed?
     
    Gadget likes this.
  12. Gadget

    Gadget Well-Known Member

    Joined:
    Jan 13, 2007
    Messages:
    10,839
    Likes Received:
    111
    You can try unplugging the MAF sensor and see if it stays running. If so you likely have a bad MAF, but that should set a code.

    I am starting to think it has something to do with the key transponder system. That will allow the truck to start, but shut down after a couple of seconds if the ECU does not get the OK from the key transponder. Like the other guy said, try a different key and see if it works. If so replace the bad key. If not you may have to get it checked out by the dealer.
     
  13. rexrunner

    rexrunner Active Member

    Joined:
    Jan 13, 2007
    Messages:
    2,578
    Likes Received:
    5
    8

    The other guy lol.
     
  14. Gadget

    Gadget Well-Known Member

    Joined:
    Jan 13, 2007
    Messages:
    10,839
    Likes Received:
    111
    I am sorry, you a chick?
     
    akakrill likes this.
  15. NHXRUNNER

    NHXRUNNER "New Hampster"
    Staff Member

    Joined:
    Jul 30, 2007
    Messages:
    7,593
    Likes Received:
    159
    Lol
     
    akakrill likes this.
  16. XrunnerrRTR

    XrunnerrRTR New Member

    Joined:
    Jul 28, 2017
    Messages:
    12
    Likes Received:
    0
    I checked the relay.
    there is a aftermarket alarm that came with the truck when I bought it
     
  17. XrunnerrRTR

    XrunnerrRTR New Member

    Joined:
    Jul 28, 2017
    Messages:
    12
    Likes Received:
    0
    I pulled the MAF and the truck still does the same thing.
     
  18. NHXRUNNER

    NHXRUNNER "New Hampster"
    Staff Member

    Joined:
    Jul 30, 2007
    Messages:
    7,593
    Likes Received:
    159
    What was the last mod done to the truck before this issue started?
     
  19. rexrunner

    rexrunner Active Member

    Joined:
    Jan 13, 2007
    Messages:
    2,578
    Likes Received:
    5
    You checked the relay? If so then it's getting power in and out. With a solid contact. In the truck right? Then check the fuel pressure. If not contact URD. When that fails PM me lol ext 3 for steven
     
  20. rexrunner

    rexrunner Active Member

    Joined:
    Jan 13, 2007
    Messages:
    2,578
    Likes Received:
    5
    Well so far your ideas haven't worked. What's next
     

Share This Page

  • About Us

    XR-Underground is a dedicated community of Toyota X-Runner enthusiasts that was launched in January 2007. X-Runner Underground.com, referred to as XRU by our regular members, offers an active discussion forum, group events, specialty merchandise, a welcoming community of owners and the most information you can find about the Toyota X-Runner on the internet!
  • Quick Navigation

    Open the Quick Navigation

  • Like us on Facebook

  • Your donations keep XRU going

    XRU is a forum for the users, by the users. We receive very limited funding from vendors so we really rely on donations to cover our operating costs and to provide products and giveaways at events. Every dollar helps!

    If you are able to donate, we'd really appreciate your help.