Advertisement
Please note that it is not permitted to have referral links posted in your signature. Keep these links contained in the appropriate forum. Thank you.

https://www.boards.ie/discussion/2055940817/signature-rules
Help Keep Boards Alive. Support us by going ad free today. See here: https://subscriptions.boards.ie/.
https://www.boards.ie/group/1878-subscribers-forum

Private Group for paid up members of Boards.ie. Join the club.
Hi all, please see this major site announcement: https://www.boards.ie/discussion/2058427594/boards-ie-2026

Pathfinder loses power

  • 27-11-2024 12:48AM
    #1
    tmccar
    Registered Users, Registered Users 2 Posts: 156 ✭✭


    I have a 2000 Pathfinder with a .5L diesel engine. It loses power and revs after a few miles, and if I turn it off and start after a few seconds it fires up again and the revs come back slowly.

    I tried changing the plunger unit over the fuel filter but that didn't help. what else could it be?

    On a separate note (possibly), could anyone identify the cable in th photo with the yellow stripe? It is disconnected at the other end.

    20241126_200339.jpg


Comments

  • #2
    mk7r
    Registered Users, Registered Users 2 Posts: 1,137 ✭✭✭mk7r


    That looks like the main engine ground cable



  • #3
    Bigserious1
    Registered Users, Registered Users 2 Posts: 254 ✭✭Bigserious1


    Just happened to watch this earlier. Different engine but symptoms sound quite similar. Worth a shot maybe.

    https://youtu.be/uJbOLVVZokY?si=pU07-RIOM90m1wM6


  • #4
    Wailin
    Registered Users, Registered Users 2 Posts: 4,451 ✭✭✭Wailin


    Could be a lot of possible causes. MAF sensor, suction control valve, injectors, crank shaft sensor, fuel filter, timing chain etc. The best thing to do is buy a diagnostic scanner, you can get some relatively cheap, and see what fault codes it throws up. Sounds like it's going into limp mode. I had a 2008 pathfinder and it started doing the same. Turned out it was a faulty MAF sensor so a cheap fix luckily. Is it blowing black smoke from the exhaust under load by any chance?



  • #5
    tmccar
    Registered Users, Registered Users 2 Posts: 156 ✭✭tmccar


    No, when it dies and you start it up again, it puts out blue smoke for a while.
    I have a scanner but it won't fit the plug. Did Nissan have their own proprietary scanner connection at one stage?

    20241202_123439 (1).jpg

    ?



  • #6
    mk7r
    Registered Users, Registered Users 2 Posts: 1,137 ✭✭✭mk7r


    https://www.boards.ie/discussion/comment/122941683#Comment_122941683

    Thats pre OBD2 so you need a scanner that comes with the legacy adapters (anything high end will have them)



  • Advertisement
  • #7
    Dirty Nails
    Registered Users, Registered Users 2 Posts: 616 ✭✭✭Dirty Nails


    You could flash the code on them by looping the lower 2 lh terminals on your pic with a paper clip. Loop the wires, turn on ign, after 3 seconds pull the clip out & the engine light will flash. Long flashes are 10's short are 1's. EG 3 long & 1 short is 31. google for meaning if you haven't a workshop manual. Some other similar sequence for deleting codes - I cant remember



Advertisement
Advertisement