diagnose this noise!

[keith]

diagnose this noise: if i press hard on the pedal for about 1-2 seconds and let go, the gear will shift up and also make a hissing noise (a loud PSH) sort of like a blow off valve. what could this be?

i have an automatic stock 2003 a4. 55k miles

[AudiBama]

umm...possibly a torn diaphram in the dv?....idk?

[keith]

i have a warranty i didnt bring it in yet, but i am hoping that they can find the problem and not just tell me its nothing

[AudiBama]

i have a warranty i didnt bring it in yet, but i am hoping that they can find the problem and not just tell me its nothing

well if it's a loud abnormal noise it probably is something....throwing any codes? notice any power loss?

[keith]

ya i feel a bit of a power loss, no codes tho. it really sounds like a DV. when it changes gears without me letting go of the gas it doesn't make this noise, but when i let go of my pedal and it changes gears after me hittin the gas hard for a couple seconds then it makes the noise. idk if im explaining this right im a bit buzzed

[AudiBama]

ya i feel a bit of a power loss, no codes tho. it really sounds like a DV. when it changes gears without me letting go of the gas it doesn't make this noise, but when i let go of my pedal and it changes gears after me hittin the gas hard for a couple seconds then it makes the noise. idk if im explaining this right im a bit buzzed

hmm...could just be your normal dv noise...i'm not sure how abruptly the auto's change or how audible the dv is with them...but when i still had my stock dv if i built boost then kicked it out of gear it was decently loud...but hey...warranty car = warranty work...take it in and let them have a look

[keith]

the noise started after they put in a free new engine (old one blew up from the oil sludge problem), so maybe they put in a different DV? cus it usually never made this noise b4.. i was wondering if it could be like a boost leak or something, do they check for leaks at the dealership

[AudiBama]

no, its probably still the bosch stock dv


and they should be able to check for boost leaks

[keith]

anyone have any idea what this could be

[keith]

dbl post