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Discussion: Nettoyage throttle body = Rough idle!!!

  1. #1
    Avatar de espritv8
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    Nettoyage throttle body = Rough idle!!!

    Salut,

    J'ai nettoyé les throttle body hier sur ma M3 E46. J'ai pris du seafoam que j'utilise régulièrement sur mes véhicules.
    Après avoir retiré le manifold, j'ai nettoyé les valves et mon ICV. J'ai tout remis en place en m'assurant que toutes les connections soient OK.

    J'ai eu de la misère a repartir l'auto, et ça roulait très inégal, comme si il n'y avait pas de feu sur tout les cylindres. Le check engine a allumé justement pour donner des codes de misfire. Au début sur tout les cylindres, et après avoir effacé, c'est revenu seulement sur le 1 et 6, et le code random misfire. Le char roule vraiment pas bien, il monte difficilement a haut régime et a même stallé.

    Je crois que j'ai peut être trop envoyé de dépôts de carbone/seafoam dans les cylindres et scraper les bougies. Vous en pensez quoi?

    Merci


  2. #2
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    ummmm that sucks.
    check toutes tes bougies et cables
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    as tu fais le throttle body adaptation?
    Citation Envoyé par Royal-Motorsport Voir le message
    Talking about z's i had a teaser of what ScHyZo's z can do and damn

  4. #4
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    Citation Envoyé par 95EXRv6 Voir le message
    ummmm that sucks.
    check toutes tes bougies et cables
    Ouin, c'est ma première hypothèse. J'attends des nouveau coils et bougies. J'ai inversé le 1 avec le 2 et le 6 avec le 5 et maintenant j'ai du misfire sur le 2, 5 et 6 alors je crois que ce sont les coils, et peut être aussi une bougie ou deux.

    Je comprends juste pas pourquoi les coils lâchent après un traitement au Sea Foam???

  5. #5
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    Citation Envoyé par ScHyZo Voir le message
    as tu fais le throttle body adaptation?
    Je sais pas c'est quoi et google m'aide pas a comprendre...

  6. #6
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    Citation Envoyé par espritv8 Voir le message
    Je sais pas c'est quoi et google m'aide pas a comprendre...
    reset ECU settings with a software like INPA.

  7. #7
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    things I would check
    ...
    - Intake manifold gasket leak (possible near those cylinders)
    - IAT sensor if there is one
    - Air compressor blow out all valves and air hoses
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  8. #8
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    Intake is tight. Got codes for running rich also, wich is not consistent with vaccum leak if i'm correct.

    Cleaning with air hose is my next step...

  9. #9
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    annoying but you should also doublecheck each connection pin associated to intake or egr/map ...

    sometimes a bent pon will foul an ecu to think other codes
    93 Civic SI - Wife's Car
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  10. #10
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    Citation Envoyé par 95EXRv6 Voir le message
    annoying but you should also doublecheck each connection pin associated to intake or egr/map ...

    sometimes a bent pon will foul an ecu to think other codes
    Make me think that there I saw some kind of dieelectric grease on my maf connector. Should I remove that?

  11. #11
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    Excuse pour juste anglais ...

    Honestly, this is coming from someone who has taken apart all kinds of shit ... to clean it and make it as powerful as possible
    Steps for checking issues you are having

    Buy 6 new plugs from cdn tire, keep your bill to bring back if not needed
    60$ cdn tire
    Prep a spray bottle with rubbing alcohol for spray and clean
    1$ @ dollarstore
    Prep another with water for checking air leaks / vacuum issues
    1$ @ dollarstore

    1. start car up - check under accel load if vibration increase or stays same
    (if on accel, vibration increase suspect either vacuum issue or eletrical wire short)
    2. Rotate your plugs where your ECU says a problem
    3. Swap out the coilpack from those locations
    4. Check harness connectors check/clean pins
    5. check codes - take note of cylinder / coilpack error
    6. remove assembly - careful with gaskets

    If ECU is saying Cylinder 123456 is misfire or problem
    I would re-do everything you did.

    I do not know BMW at all, but intake systems are more less all the same when issues arise, vacuum, short, pins, sparks or coilpack etc

    good luck
    93 Civic SI - Wife's Car
    92 Civic EX - Winter Beater - Scrapped
    04 Civic LX - Scrapped - Accident
    92 Accord EX - Winter Beater - Scrapped
    95 Accord EX-R V6 - 5 speed swap - Gone
    98 Odyssey - Gone
    07 Chevy Equinox - Family SUV
    04 Mazda 6 Wagon S - Daily driver
    10 Honda Odyssey EX-L - Family ride

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  12. #12
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    Thanks for the help.

    Changed the coil packs and spark plugs and problem is now over!

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  14. #13
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    happy it worked out for you any nothing too serious
    93 Civic SI - Wife's Car
    92 Civic EX - Winter Beater - Scrapped
    04 Civic LX - Scrapped - Accident
    92 Accord EX - Winter Beater - Scrapped
    95 Accord EX-R V6 - 5 speed swap - Gone
    98 Odyssey - Gone
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    10 Honda Odyssey EX-L - Family ride

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