Page 1 of 3 123 LastLast
Results 1 to 10 of 26
  1. #1

    Join Date
    Sep 2021
    Posts
    14

    Capteur tps 1200 genesis i

    Bonjour à tous.
    J'ai récupéré un 1200 Genesis i de 2002 avec pistons hors service.
    J'ai remplacé les pistons et refait les cylindres.
    Le problème est qu'il ne démarre que si je met du start pilote dans le conduit d'admission.
    Il ne tient pas le ralenti et a des trous à l'accélération.
    J'ai controler la pression d'essence (17 psi).
    Je sais que je devrais avoir entre 20 et 30psi.
    Pensez vous que c'est ça ou mon capteur tps ?
    Merci pour vos réponses


  2. #2
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    45,444
    +1
    2,576
    Quote Originally Posted by boidufioul
    Hi all.
    I recovered a 1200 Genesis i from 2002 with pistons out of service.
    I replaced the pistons and redid the cylinders.

    The problem is that it only starts if I put [primer fuel] start-up driver in the [air] intake duct.
    It does not hold idle and has holes when accelerating.

    I checked the fuel pressure (17 psi).
    I know I should be between 20 and 30psi.

    Do you think that's it or my tps sensor?

    Thank you for your answers
    Welcome.

    There are multiple possible problem causes. Do not assume there is only one problem.

    Unplug the TPS.
    Does it now idle?

    17 volts on white/red wire (with all fuel injectors connected) while cranking the engine is not enough voltage to operate the Ficht fuel injectors.
    What is the battery voltage while the engine is cranking?

    Where are you located?

  3. #3
    martincom's Avatar
    Join Date
    May 2010
    Location
    Brainerd, MN
    Posts
    1,507
    +1
    158
    Your symptom of having to prime with gasoline to start is a known Engine Management Module (EMM) failure. However, first check the DC voltage on the white/red wire (21/45 VDC power supply) that feeds the injectors and is also within the 4-pin diagnostic connector, as K447 suggested in the previous post. You must keep everything connected for an accurate measurement. So you'll have to "back probe" at a connector. The DC voltage should be 21 vdc while cranking and 45 vdc while running. If it is low, check the AC voltage outputs of each section of the stator.

    Yes, your fuel pressure is low. I'd check for debris plugging the input screen of the fuel pump. See this thread for details. While you have the canister removed, reinforce the fuel pressure regulator per this thread.

  4. #4

    Join Date
    Sep 2021
    Posts
    14
    Bonjour. Merci pour votre réponse.
    Je vais essayer ça dès que possible et je vous tiens au courant.
    Ps: je suis de France.

  5. #5
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    45,444
    +1
    2,576
    Quote Originally Posted by boidufioul View Post
    Bonjour. Merci pour votre réponse.
    Je vais essayer ça dès que possible et je vous tiens au courant.
    Ps: je suis de France.
    Hello. Thank you for your reply.I will try this as soon as possible and I will keep you informed.
    Ps: I am from France.
    It would be helpful if you could post your (translated) responses in English. This makes it easier for us.

  6. #6

    Join Date
    Sep 2021
    Posts
    14
    Hello everyone.
    So I did some checking.
    It turns out that I can only start it with the pilot start. With the tps disconnect it does not change anything (no idling). I tried with another fuel pump. (it still does not start better).
    So I opened the EMM.
    I noticed that the protective gel was removed in places and that rust appears on some components.
    I would like to know if it was fixable and how much it could cost. (I remind you that I am from France).
    Thanks in advance.

  7. #7
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    45,444
    +1
    2,576
    Post a few clear photos of the opened EMM showing the exposed areas.

  8. #8

    Join Date
    Sep 2021
    Posts
    14
    Hello everyone
    So I redid the stator checks so
    Between 1 and 12 = 0.1
    Between 2 and 11 = 0.0
    Between 3 and 10 = 0.0
    Between 4 and 9 = ol
    Between 5 and 8 = 0.0.
    I do have between 17 and 30v at the injectors when it tries to start.
    I have a video, but I don't know how to put it on the forum.On the other hand what I do not understand is that I manage to start it with pilot start but it turns out very badly
    Thank you
    Last edited by boidufioul; 09-13-2021 at 05:14 AM. Reason: Details

  9. #9

    Join Date
    Sep 2021
    Posts
    14
    On the other hand what I do not understand is that I manage to start it with pilot start but it turns out very badly

  10. #10
    martincom's Avatar
    Join Date
    May 2010
    Location
    Brainerd, MN
    Posts
    1,507
    +1
    158
    Quote Originally Posted by boidufioul View Post
    Between 4 and 9 = ol
    It appears you have an open stator section. This would coincide with the previous symptoms you reported.

    The only thing that is powered from the 12 volt battery system, on a Direct Injected (DI) Polaris, is the starter motor, fuel pump, bilge pump, and instrument cluster. The ignition, fuel injection and EMM are powered from the 21/45 vdc self generated supply voltage. Each section of the stator generates an AC voltage which are all fed to the power board section of the EMM. The power board rectifies and sums these voltages. When cranking, it sums them to generate 21 vdc. Once the engine starts, it re-sums them to generate 45 vdc.

    With an open stator section, these summed voltages will be low. This low voltage is still adequate to generate ignition spark, but inadequate to operate the injectors, when cranking. When you prime it with gasoline, it starts and the EMM re-configures to 45 vdc mode. Your actual voltage is lower than 45 vdc, but now high enough to make the injectors trigger. However, the low voltage still results in poor injector/ignition operation.

    If you replace your stator with an aftermarket, beware they are often mis-wired. See this sticky for details.

  11. +1 by:


Page 1 of 3 123 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Location of the TPS on an 03 genesis?
    By Wilson750 in forum Polaris Open Discussion
    Replies: 6
    Last Post: 07-13-2016, 10:53 AM
  2. Genesis TPS and TPS test harness Good Price!
    By Chef in forum Polaris Open Discussion
    Replies: 1
    Last Post: 06-30-2014, 05:39 PM
  3. Tps 2001 genesis I
    By classact2731 in forum Polaris Open Discussion
    Replies: 4
    Last Post: 05-11-2011, 08:38 PM
  4. 2003 Genesis TPS -- How To
    By madison in forum Polaris Open Discussion
    Replies: 1
    Last Post: 06-23-2010, 09:28 PM
  5. Polaris genesis 99 TPS
    By Dreliukas in forum Polaris How To & FAQs
    Replies: 3
    Last Post: 07-21-2009, 05:30 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •