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Old 10-24-2015, 05:06 PM   #1
Amine-TE
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Default P0299 turbo underboost pressure aprés fap off

salut l'équipe,

un bon moment que j'ai fais un fap off sur un golf7 184ch mais j'ai pas démonter physiquement, le client a roulé environ 10.000km et il est revenu pour démonter et puis la quand j'ai cassé le fap la voiture a roulé environ 50km et hop P0299 ( pression suralimentation trop faible )

j'ai vérifier la totalité mais aucune fuite j'ai pensé au wastegate, mais j'ai préféré entendre vos idées.

La contre pression joue un rôle ?
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Old 10-24-2015, 10:19 PM   #2
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slm amine moi j'ai eu un cas similaire golf 6 tdi avec le même défaut sauf quelle n'etait pas défapper et j'ai changer le turbo et pour moi c'etais wastegate actuateur a+inchallah
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Old 10-25-2015, 06:00 AM   #3
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salut amine j’ai une wastegate si tu veut l’essayer .
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Old 10-25-2015, 06:09 AM   #4
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Quote:
Originally Posted by Ecuserver.net View Post
La contre pression joue un rôle ?
Hello,

Oui, la contre-pression peut jouer un rôle et donner des défauts de pression turbo mais en général on a une contre pression avec un FAP ou un cata bouché!
Je vérifierais la wastgate avant tout!

Crdl.
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Old 10-25-2015, 10:22 AM   #5
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Originally Posted by star31 View Post
salut amine j’ai une wastegate si tu veut l’essayer .
c'est trés gentil salim, je vais essayer de trouver une a coté si je trouve pas je t'appel :)

Je vous tiens au courant du résultat.
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Old 10-25-2015, 01:53 PM   #6
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J'ai testé un actuateur wastegate et son elevtrovanne et c'est toujours le même souci.
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Old 10-26-2015, 04:22 AM   #7
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salut amine appel moi je vais te guider pour ce problème.
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Old 10-26-2015, 07:27 AM   #8
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Salut,

La contrepression joue un role.
Dans ce cas tu aurais dû avoir ce defaut avec le fap bouché>gaz qui sortent lentement>turbo tourne lentement>pas de pression de sural

Une fois débouché, tu aurais du retrouvé la pression de sural.

Inspecte ton circuit de sural.
Inspecte aussi les roues de turbine et de compresseur de ton turbo...si elles sont pas abimées.
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Old 10-26-2015, 02:13 PM   #9
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Le probleme c'est que la voiture est en dégradé dés le démarrage donc je ne crois pas que ça sois une contre pression.
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Old 10-26-2015, 04:34 PM   #10
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Enfin après démontage du turbo, l'axe turbo est coupé en deux, ( le turbo est mort )

merci a tous ceux qui m'ont aidé.

résolu.
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