perte de puissance et ODB eteint...

[hugo1111]

Bonsoir a tous,

 

J ai une audi a6 avant 2.5tdi de 98 avec 345 000km. depuis 2 semaines, elle a un gros probleme de puissance, comme si le turbo marchait a moitie ou a peine. Je pense au debitmetre qui a pourtant ete change il y a 20/30 000 km. Je viens de le demonter et il a l air clean. J ai roule un peu avec le debitmetre debranche et j ai les memes symptomes (un ami qui a eu un probleme de debitmetre sur un fiat multipla, m a dit que , debranche , la voiture marche normalement...je ne sais pas si c est pareil sur une audi ?). Bizarement, l odb ne marche plus aussi. les pixels sont ok puisque j ai le voyant porte ouverte avec le contact, mais une fois le moteur allume, tout est noir.

 

Est-ce quelqu un a deja eu les memes symptomes ? Je pense essayer d intervertir les debitmetres demain avec celui de ma passat 1.9tdi de 98, mais je ne sais pas si ce sont les memes...

 

j ai fait un tour avec vagcom groupe de mesure 0 (est-ce le bon pour voir un defaut de debitmetre ?)

 

 

Saturday,09,February,2013,18:08:50

4B0 907 401 E ,, 2.5l/4VT EDC G00SG D41 ,

 

,Group A:,'000,,,,,,,,,,Group B:, Not Running,,,,Group C:, Not Running

,,,,,,,,,,,,,,,,,,,,,

,TIME,,,,,,,,,,,TIME,,,,,TIME,,,,

MARKER,STAMP,,,,,,,,,,,STAMP,,,,,STAMP,,,,

,0.00,032,061,000,024,100,216,079,152,151,071,,,,,,,,,,

,0.62,032,062,000,023,100,216,079,152,151,070,,,,,,,,,,

,1.23,032,061,000,023,100,216,079,152,151,069,,,,,,,,,,

,1.85,032,061,000,024,100,216,079,152,151,069,,,,,,,,,,

,2.48,034,060,000,012,100,216,079,152,151,097,,,,,,,,,,

,3.10,037,064,024,045,100,216,079,151,151,100,,,,,,,,,,

,3.74,034,100,024,061,102,216,079,151,151,098,,,,,,,,,,

,4.32,035,131,032,064,102,216,079,151,151,095,,,,,,,,,,

,4.90,056,105,065,064,102,216,079,152,151,097,,,,,,,,,,

,5.49,075,063,076,060,106,216,079,152,151,097,,,,,,,,,,

,6.10,095,070,023,045,112,216,079,152,151,105,,,,,,,,,,

,6.72,060,086,029,024,105,216,079,153,151,105,,,,,,,,,,

,7.31,048,059,044,060,104,216,079,153,151,097,,,,,,,,,,

,7.85,059,122,103,076,106,216,079,153,151,095,,,,,,,,,,

,8.38,063,096,127,074,108,216,079,153,151,101,,,,,,,,,,

,8.89,069,092,154,075,111,216,080,153,151,101,,,,,,,,,,

,9.45,076,094,172,075,113,216,080,153,151,102,,,,,,,,,,

,10.07,084,093,179,077,116,216,080,154,151,104,,,,,,,,,,

,10.71,092,096,172,081,119,216,080,154,151,109,,,,,,,,,,

,11.35,100,101,210,083,122,216,080,155,151,111,,,,,,,,,,

,11.98,082,073,000,000,111,216,080,156,151,100,,,,,,,,,,

,12.60,063,079,083,067,105,216,080,156,151,087,,,,,,,,,,

,13.23,070,107,119,074,110,216,080,156,151,100,,,,,,,,,,

,13.85,073,077,077,068,110,216,080,156,151,099,,,,,,,,,,

,14.49,076,082,076,067,112,216,080,156,151,100,,,,,,,,,,

,15.13,078,070,079,064,114,216,080,157,151,102,,,,,,,,,,

,15.79,082,093,204,075,115,216,080,157,151,102,,,,,,,,,,

,16.47,085,093,171,077,116,216,080,157,151,103,,,,,,,,,,

,17.06,088,094,166,078,117,216,080,158,151,105,,,,,,,,,,

,17.67,091,096,223,079,118,216,080,158,151,107,,,,,,,,,,

,18.30,094,061,081,058,112,216,080,158,151,095,,,,,,,,,,

,18.92,095,075,048,039,104,216,080,159,151,092,,,,,,,,,,

,19.54,096,082,227,069,103,216,080,159,151,094,,,,,,,,,,

,20.15,098,080,039,039,105,216,080,159,151,095,,,,,,,,,,

,20.74,097,073,000,003,099,216,080,159,151,089,,,,,,,,,,

,21.32,094,073,000,000,098,216,080,160,151,089,,,,,,,,,,

,21.87,090,073,000,000,098,216,080,160,151,089,,,,,,,,,,

,22.40,087,073,000,000,098,216,080,160,151,089,,,,,,,,,,

,22.93,084,073,000,000,098,216,080,160,151,089,,,,,,,,,,

,23.45,081,073,000,000,099,216,080,160,151,090,,,,,,,,,,

,24.02,077,073,000,000,099,216,080,160,151,091,,,,,,,,,,

,24.66,073,073,000,000,099,216,080,160,151,091,,,,,,,,,,

,25.30,068,073,000,000,100,216,080,160,151,094,,,,,,,,,,

,25.96,063,073,000,000,100,216,080,160,151,096,,,,,,,,,,

,26.58,057,073,000,000,100,216,080,160,150,097,,,,,,,,,,

,27.19,053,073,000,000,100,216,079,160,150,097,,,,,,,,,,

,27.81,051,050,035,027,100,216,079,160,150,098,,,,,,,,,,

,28.44,052,116,070,074,103,216,079,159,150,102,,,,,,,,,,

,29.06,055,120,068,075,107,216,079,160,150,104,,,,,,,,,,

,29.68,059,107,098,076,109,216,079,160,150,104,,,,,,,,,,

,30.31,063,101,109,075,111,216,079,160,150,103,,,,,,,,,,

,30.93,067,096,152,075,113,216,079,160,150,102,,,,,,,,,,

,31.56,070,095,163,076,114,216,079,160,150,103,,,,,,,,,,

,32.16,074,096,066,064,115,216,079,160,150,103,,,,,,,,,,

,32.74,075,061,000,013,107,216,079,161,150,094,,,,,,,,,,

,33.34,073,073,000,000,103,216,079,161,150,092,,,,,,,,,,

,33.91,070,073,000,000,101,216,079,161,150,092,,,,,,,,,,

,34.51,067,073,000,000,100,216,079,161,150,094,,,,,,,,,,

,35.13,064,073,000,000,100,216,079,161,150,095,,,,,,,,,,

,35.81,060,073,000,000,100,216,079,161,150,096,,,,,,,,,,

,36.40,056,073,000,000,100,216,079,160,150,097,,,,,,,,,,

,36.93,053,073,000,000,100,216,079,160,150,097,,,,,,,,,,

,37.44,048,073,000,002,100,216,079,160,150,098,,,,,,,,,,

,37.95,043,061,000,006,100,216,079,160,150,099,,,,,,,,,,

,38.56,030,060,000,033,101,216,079,160,150,097,,,,,,,,,,

,39.19,033,064,008,038,101,216,079,160,150,097,,,,,,,,,,

,39.79,049,065,022,026,102,217,079,159,150,073,,,,,,,,,,

,40.42,051,078,053,058,102,217,079,159,150,100,,,,,,,,,,

,41.04,057,102,066,068,106,216,079,160,150,103,,,,,,,,,,

,41.66,064,077,065,063,108,216,079,160,150,101,,,,,,,,,,

,42.30,070,065,045,043,111,216,079,160,150,101,,,,,,,,,,

,42.93,074,060,056,039,113,216,079,160,150,084,,,,,,,,,,

,43.59,077,067,069,057,112,216,079,160,150,097,,,,,,,,,,

,44.23,084,083,097,075,115,216,079,161,150,104,,,,,,,,,,

,44.87,092,098,239,081,119,216,079,161,150,109,,,,,,,,,,

,45.51,100,104,242,083,122,216,079,162,150,110,,,,,,,,,,

,46.13,107,105,131,080,125,216,079,162,150,106,,,,,,,,,,

,46.75,079,073,000,000,107,216,079,162,150,100,,,,,,,,,,

,47.37,071,088,123,075,108,216,079,162,150,099,,,,,,,,,,

,48.00,074,092,110,074,112,216,079,162,150,100,,,,,,,,,,

,48.61,077,072,035,054,110,216,079,162,150,098,,,,,,,,,,

,49.26,075,061,000,006,106,216,079,162,150,093,,,,,,,,,,

,49.85,073,073,000,000,102,216,079,162,150,091,,,,,,,,,,

,50.43,070,073,000,000,100,216,079,162,150,092,,,,,,,,,,

,51.01,065,073,000,000,100,216,079,162,150,095,,,,,,,,,,

,51.57,056,073,000,000,100,216,079,162,150,098,,,,,,,,,,

,52.15,050,073,000,000,101,216,079,161,150,096,,,,,,,,,,

,52.70,045,057,000,002,101,216,079,161,150,095,,,,,,,,,,

,53.21,044,061,021,026,101,216,079,161,150,099,,,,,,,,,,

,53.77,044,060,036,045,102,216,079,161,150,098,,,,,,,,,,

,54.38,045,074,040,052,103,216,079,161,150,099,,,,,,,,,,

,55.01,048,083,061,063,103,216,079,161,150,098,,,,,,,,,,

,55.63,051,131,137,075,106,216,079,161,150,102,,,,,,,,,,

,56.25,054,116,174,077,108,216,079,161,150,104,,,,,,,,,,

,56.88,058,111,137,077,111,216,079,161,150,104,,,,,,,,,,

,57.50,061,103,130,076,112,216,079,161,150,104,,,,,,,,,,

,58.12,064,099,089,075,113,216,079,161,150,101,,,,,,,,,,

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,109.32,089,096,237,081,121,216,079,165,150,109,,,,,,,,,,

,109.95,092,098,255,084,122,216,079,165,150,111,,,,,,,,,,

,110.57,096,100,243,083,123,216,079,166,150,111,,,,,,,,,,

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,113.12,108,100,184,077,123,216,079,167,150,101,,,,,,,,,,

,113.80,106,081,000,013,113,216,079,167,150,092,,,,,,,,,,

,114.42,105,072,000,000,100,216,079,167,150,088,,,,,,,,,,

,115.05,103,069,048,022,098,216,079,167,150,087,,,,,,,,,,

,115.66,103,089,065,037,099,216,079,167,150,090,,,,,,,,,,

,116.26,103,086,066,039,101,216,079,167,150,091,,,,,,,,,,

,116.86,103,087,065,039,101,216,079,167,150,092,,,,,,,,,,

,117.42,103,087,062,036,102,216,079,167,150,092,,,,,,,,,,

,117.93,102,071,030,018,102,216,079,167,150,092,,,,,,,,,,

,118.48,101,073,000,005,103,216,079,167,150,068,,,,,,,,,,

,119.00,098,073,000,000,098,216,079,167,150,090,,,,,,,,,,

,119.53,095,073,000,000,098,216,079,167,150,090,,,,,,,,,,

,120.12,092,073,009,000,098,216,079,167,150,091,,,,,,,,,,

,120.73,089,064,010,002,098,216,079,167,150,090,,,,,,,,,,

,121.35,086,065,005,000,098,216,079,167,150,090,,,,,,,,,,

,122.01,083,073,011,002,098,216,079,167,150,091,,,,,,,,,,

,122.66,081,067,025,013,099,216,079,167,150,092,,,,,,,,,,

,123.31,079,070,025,014,102,216,079,167,150,063,,,,,,,,,,

,123.96,079,066,040,024,101,216,079,166,150,061,,,,,,,,,,

,124.55,078,068,004,004,100,216,079,166,150,064,,,,,,,,,,

,125.19,075,073,005,000,099,216,079,166,150,091,,,,,,,,,,

,125.80,073,073,010,002,099,216,079,166,150,091,,,,,,,,,,

,126.42,070,067,011,004,099,216,079,166,150,092,,,,,,,,,,

 

 

Je vous remercie par avance pour vos lumieres

 

hugo

[FrançoisL]

Si une fois le débitmètre débranché tu as les mêmes symptomes ça peut pas venir de là!

[yakariv16]

slt , pas la peine de reluquer un debimetre si celui-ci marche plus, ça sert à rien!!!!

[YANNCIKA6]

Pour moi son debimetre est naz si rien a changer lorsquil la debrancher

[hugo1111]

Merci pour votre aide. J ai vu pas mal de gens qui disent avoir des performance "normales" debitmetre debranche...lorsque je le debranche, j ai le voyant ESP allume , bizarre non ? Le fait que l ODB ne marche plus (alors que l ecran fonctionne) me dit que le calculateur (ou une partie) deconne quelque part...ce qui mettrait le moteur en mode degrade. Qu en pensez-vous ?

 

J ai eu un probleme, il y a un mois sur ma passat (different certes) qui demarrait et calait immediatement. Apres plusieurs verifications, j avais decide de changer le contacteur de neiman et tout avait remarche nickel. Ca ne pourrait pas venir de ca mon probleme sur l audi ?

 

 

 

Pour moi son debimetre est naz si rien a changer lorsquil la debrancher

[hugo1111]

J ai aussi de la pression dans le circuit d huile avec un suintement au niveau du bouchon de remplissage (probleme apparement lie au reniflard d huile bouche) mais cela n expliquerait pas l ODB qui ne marche plus....

[hugo1111]

Bon l odb est reapparu en appuyant sur le reset du comodo. J ai verifie l alim du debimetre, tout est bon. Par contre gros pshhhit lorsque j ouvre le bouchon de remplissage d huile (moteur tournant). Est-ce qu un debimetre HS pourrait expliquer un tel symptome ? Le reniflard a l air difficile d accès pour un novice comme moi...j aimerais explorer d autres pistes avant de regarder de ce cote ! je comptais regarder l ~EGR mais meteo de merde aujourd hui et pas de garage.

[YANNCIKA6]

Je pense que ton reniflard est bouché au vu du psciiiiht, si cest le cas traine pas trop a faire quelque chose sinon tes joint font peter un a un en commençant par ceux des caches soupapes....

[hugo1111]

Ca ne peut pas etre l EGR bloquee ou encrassee ? si je debranche la durite de l egr et la bouche, ca revient a la condamner physiquement avec les palques, non ? juste pour tester...

 

 

Je pense que ton reniflard est bouché au vu du psciiiiht, si cest le cas traine pas trop a faire quelque chose sinon tes joint font peter un a un en commençant par ceux des caches soupapes....

[YANNCIKA6]

Concernant l'egr je laisse les experts du mazout te repondre, il ne devrait pas tarder a te repondre, bon courage et tiens nous au jus

[hugo1111]

Bonsoir, j ai commande le filtre du reniflard du 180cv selon les conseils de certains car il est plus efficace et s encrasse moins vite. Le mecano doit le remplacer demain...d apres mes echanges avec lui (c est un type qui reparre Ferrari, Porsche, Aston et autre M5...dans un garage Renault), le reniflard bouche expliquerait le pshiiiit mais pas la perte de puissance ou le mode degrade.

 

Je viens de faire un petit log, a l arret et a froid (peur de peter des joints spi, oblige) et je constate que la masse d air dimminue avec les tours.... c est pas l inverse normallement ???? le debimetre, meme defectueux ne marche pas a l envers, non ? probleme de turbo, GV ou vanne n75 ?

 

merci pour vos idees.

 

 

4B0 907 401 E ,, 2.5l/4VT EDC G00SG D41 ,

 

,Group A:,'003,,,,Group B:, Not Running,,,,Group C:, Not Running

,,Engine speed,MAF (specified),MAF (actual),EGR duty cycle,,,,,,,,,,

,TIME,740-840,180-270 mg/H,160-290 mg/H,40-75%,TIME,,,,,TIME,,,,

MARKER,STAMP, /min, mg/R, mg/R, %,STAMP,,,,,STAMP,,,,

,0.92,882,498.5,447.5,88.4,,,,,,,,,,

,1.50,905,533.8,447.5,88.4,,,,,,,,,,

,2.08,928,474.9,447.5,88.4,,,,,,,,,,

,2.64,951,467.1,447.5,88.4,,,,,,,,,,

,3.25,951,467.1,443.5,88.4,,,,,,,,,,

,3.92,974,514.2,443.5,88.4,,,,,,,,,,

,4.58,1044,447.5,447.5,88.0,,,,,,,,,,

,5.25,1044,455.3,447.5,88.4,,,,,,,,,,

,5.93,1090,447.5,447.5,87.6,,,,,,,,,,

,6.61,1090,439.6,451.4,84.4,,,,,,,,,,

,7.28,1090,443.5,455.3,84.0,,,,,,,,,,

,7.93,1114,467.1,451.4,88.4,,,,,,,,,,

,8.61,1183,435.7,451.4,83.6,,,,,,,,,,

,9.26,1206,423.9,455.3,75.0,,,,,,,,,,

,9.93,1206,435.7,455.3,70.2,,,,,,,,,,

,10.62,1299,412.1,443.5,60.8,,,,,,,,,,

,11.29,1346,396.4,423.9,48.9,,,,,,,,,,

,11.97,1369,380.7,376.8,46.9,,,,,,,,,,

,12.64,1415,376.8,380.7,48.1,,,,,,,,,,

,13.31,1438,361.1,365.0,46.2,,,,,,,,,,

,13.97,1392,369.0,361.1,47.3,,,,,,,,,,

,14.64,1346,376.8,372.9,48.1,,,,,,,,,,

,15.29,1276,455.3,392.5,61.2,,,,,,,,,,

,15.97,1578,380.7,423.9,51.7,,,,,,,,,,

,16.64,1647,357.2,369.0,48.5,,,,,,,,,,

,17.32,1578,357.2,357.2,48.1,,,,,,,,,,

,18.04,1624,369.0,361.1,50.1,,,,,,,,,,

,18.73,1670,365.0,365.0,50.9,,,,,,,,,,

,19.42,1694,361.1,361.1,51.3,,,,,,,,,,

,20.08,1694,365.0,365.0,51.3,,,,,,,,,,

,20.75,1717,365.0,361.1,51.7,,,,,,,,,,

,21.42,1740,361.1,357.2,51.7,,,,,,,,,,

,22.06,1740,361.1,361.1,51.7,,,,,,,,,,

,22.73,1763,372.9,361.1,52.9,,,,,,,,,,

,23.40,1879,357.2,361.1,52.9,,,,,,,,,,

,24.08,1856,345.4,353.3,50.9,,,,,,,,,,

,24.73,1717,337.6,349.3,48.9,,,,,,,,,,

,25.39,1462,298.3,325.8,41.8,,,,,,,,,,

,26.04,1114,341.5,353.3,45.4,,,,,,,,,,

 

 

Concernant l'egr je laisse les experts du mazout te repondre, il ne devrait pas tarder a te repondre, bon courage et tiens nous au jus

[hugo1111]

bonsoir a tous,

 

voici le resultat des courses: le diagnostique du reniflard etait le bon, mais apres son remplacement par le modele du 180cv, le moteur etait toujours etouffe, meme si le pshiiit avait disparu. Ie mecano a ouvert le turbo et il est nickel et d origine avec 340 000km. Il a donc cherche plus loin, et le catalyseur etait completement bouche (probablement a cause du reniflard bouche). Il a donc ouvert a la meuleuse, vire le nid d abeille et ressoude . Maintenant, impecable, bonne peche et plus de fumee.

 

Le reniflard est donc une serieuse piste a explorer en cas de manque de puissance. La piece est chere : 80€ et dispo chez audi uniquement, helas.

 

Merci encore!

 

hugo

[YANNCIKA6]

Merci pour ton retour et profite bien maintenant

[yakariv16]

cool pour toi :bien: