Problems with turbo air dump noise and strange VAG Codes

[zombiefly]

hi
I've not posted much on here for a while as my Octy vrs has been running fine, so as per usual I only turn up when I have a problem


firstly, i'm not sure if i've posted this in the correct forum, please could a mod move it if so!


recently I’ve noticed when dipping the clutch during hard (well, above normal) acceleration I get the sound of a dump of air "chhhhhhhh" (like a dump valve, but not as loud!) from the driver's side front wing. I attempted to have a dealer diagnose the problem, but received the usual "there's no problem showing on the diags report"

I decided to renew that plastic thing (diverter valve?) that sits up over the engine block, which has improved the smoothness of general acceleration, but it hasn’t solved the problem with the air dumping sound.

Anyway, a mate has the VAG-COM stuff on his laptop, so we plugged it in and its showing some weirdness with the fuel trims. Looking at the instructions for the diag tool, it would appear that the bizarre minus value on the 2nd sensor is due to a loss of air? Would this have something to do with a pipe in the wing that has had an advisory on it?

Any help greatly appreciated as mr dealer has proved to be utterly useless
(As my engine management isn’t reporting a fault code)

Thanks in advance





I’ve also created a report, which appears to be highlighting a problem with my aircon, but this isn’t really important right now.



VAG-COM Version: Release 504.1-UD


Chassis Type: 1U - Skoda Octavia
Scan: 01 02 03 08 15 17 19 35 46 56

-------------------------------------------------------------------------------
Address 01: Engine
Controller: 06A 906 032 HN
Component: 1.8L R4/5VT 0001
Coding: 11500
Shop #: WSC 31480
TMBER41U228538711 SKZ7Z0A1030508
No fault code found.
Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 03: ABS Brakes
Controller: 1C0 907 379 D
Component: ASR FRONT MK60 0103
Coding: 0021505
Shop #: WSC 31480
No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC
Controller: 1U1 907 044 A
Component: CLIMATRONIC C 2.0.0
Coding: 01000
Shop #: WSC 31480
1 Fault Found:
01274 - Air Flow Flap Positioning Motor (V71)
37-10 - Faulty - Intermittent

-------------------------------------------------------------------------------
Skipping Address 15-Airbags

-------------------------------------------------------------------------------
Address 17: Instruments
Controller: 1U0 920 911 C
Component: KOMBI+WEGFAHRSP VDO V03
Coding: 19412
Shop #: WSC 00012
TMBER41U228538711 SKZ7Z0A1030508
No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway
Controller: 6N0 909 901
Component: Gateway K<->CAN 0001
Coding: 00006
Shop #: WSC 31480
No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.
Controller: 1C0 959 799 B
Component: 3Y Komfortgerát HLO 0003
Coding: 00259
Shop #: WSC 31480
No fault code found.

End --------------------------------------------------------------------------------------------------

[Goochie]

That fault code relates to the cabin ventilation system and not the engine.

[zombiefly]

Originally Posted by Goochie

That fault code relates to the cabin ventilation system and not the engine.

thanks for the reply, but i did actually say that above

"I’ve also created a report, which appears to be highlighting a problem with my aircon"

[TeflonTom]

Originally Posted by zombiefly

hi

Looking at the instructions for the diag tool, it would appear that the bizarre minus value on the 2nd sensor is due to a loss of air? Would this have something to do with a pipe in the wing that has had an advisory on it?

could be a leak or a hole in the exhaust system somwhere, that could also account for the noises you are getting when air is being dumped.

[Bodge]

you ever get anywhere with fixing that 01274 fault?

[zombiefly]

Originally Posted by Bodge

you ever get anywhere with fixing that 01274 fault?

no... i can still hear it making a noise sometimes. I can't find anything wrong with the aircon or the heating so i decided to leave it until it breaks down completely!

...the turbo noise problem turned out to be a 3 inch split in the turbo pipe, which i found myself after 3 dealer visits had turned up nothing.

NEVER visit a dealership outside of your warranty. Useless *****