Trepidatii la pornire de pe loc si scaderea turatiei la oprire

[Gaal Alexandru]

Salutari,

 

Am urmatoarea problema la masina:

 

1) Cateodata (~50%) din cazuri cand pornesc de pe loc masina trepideaza destul de tare.

Daca o accelerez mai tare nu se intampla. Dar la o pornire mai lina, da.

 

2) Cand o scot la liber sau apas ambreiajul, pentru cateva secunde turatia scade la 500 - 600 rpm, dupa acea revine la normal.

La fel face cu AC oprit / pornit, radio oprit / pornit.

 

De la ultima diagnoza am urmatoarele erori, dar toate is cu "Fault not present..."

 

Are cineva niste idei de la ce ar fii?

Edited December 2, 2015 by Gaal Alexandru

[octavian]

la prima problema, cel mai probabil, e vorba de tampoanele la motor.

[zeronoo]

Salutari,

 

Am urmatoarea problema la masina:

 

1) Cateodata (~50%) din cazuri cand pornesc de pe loc masina trepideaza destul de tare.

Daca o accelerez mai tare nu se intampla. Dar la o pornire mai lina, da.

CDV aka "clutch delay valve"

 

2) Cand o scot la liber sau apas ambreiajul, pentru cateva secunde turatia scade la 500 - 600 rpm, dupa acea revine la normal.

La fel face cu AC oprit / pornit, radio oprit / pornit.

 

De la ultima diagnoza am urmatoarele erori, dar toate is cu "Fault not present..."

 

Are cineva niste idei de la ce ar fii?

sterge tot si scaneaza dupa cateva zile de mers din nou, vezi ce reapare

Edited December 3, 2015 by zeronoo

[Gaal Alexandru]

CDV aka "clutch delay valve"

 

poti sa dai mai multe detalii?

ce face mai exact CDV?

[zeronoo]

 

Clutch Delay Valve

The clutch delay valve is a small valve in the clutch line that restricts clutch fluid flow. It's designed to prevent shock to the transmission if the clutch is dropped. The bad part is that it makes the clutch feel vague and can make it difficult to pull off smooth shifts for experienced manual transmission drivers.

 

Note that installation of a restricted CDV was not made on all manual cars. There are some that do not have one, some that do have one without restriction (same as the delete version) and then a lot of cars that have a restricted CDV. Seems that earlier E46 do not have it and it was phased in sometime in 2001 built dates.

 

There are two choices: Remove the CDV completely (the two ends of the clutch line will screw into each other, requiring no parts) or replace the CDV with a drilled-out version, eliminating the restriction. People use the drilled-out version to avoid dealer hassles in case a transmission warranty issue arises.

 

After replacing or removing the CDV, you do need to bleed the clutch line.