Intake manifold runner control fault

[A3Quattro]

Hi,

I have a 2007 2.0 TDI Quattro A3. Driving the other day and the blasted glow plug light started flashing, AGAIN....
The car stayed in normal driving mode and when I stopped for fuel the fault didn't come back straigh away - it took about ten minutes. Later that day I drove about 100 miles with no flashing glow plug.....


Upon insoection with VCDS I have got the following fault:


VCDS Version: Release 10.6.4
Data version: 20110418
Sunday,29,May,2011,18:18:01:41539
Chassis Type: 1K0
-------------------------------------------------------------------------------
Address 01: Engine Labels: Redir Fail!
Part No SW: 03G 906 018 DN HW: 03G 906 018 DN
Component: R4 2.0l PPD1.2 4350
Revision: --H42--- Serial number: AUX7Z0G1FN60H4
Coding: 0000172
Shop #: WSC 06441 785 00200
VCID: 74E25C276E2B
1 Fault Found:
012600 - Intake Manifold Runner Control: Regulation Deviation
P3138 - 006 - Short to Plus - Intermittent
Freeze Frame:
Fault Status: 00000001
Fault Priority: 5
Fault Frequency: 2
Reset counter: 33
Mileage: 144405 km
Time Indication: 0
Date: 2011.05.27
Time: 14:32:34
Freeze Frame:
RPM: 2688 /min
Torque: 48.0 Nm
Speed: 28.0 km/h
Mass Air / Rev.: 675.8 mg/str
Mass Air / Rev.: 637.7 mg/str
Lambda: -22.7 %
Text: Kein Messwert verfuegbar
Readiness: N/A


Can any one shed some light into the cause of this problem?

Much appreciated,


Alan

[Crasher]

So you have a BMN engine. This is probably a faulty V157 inlet manifold motor.

[A3Quattro]

Hi, is there anything wrong with a BMN engine?
I've had two injectors replaced in the last couple of months!! Thankfully Audi paid 100% of the bill each time......

If the fault happens again I might change the motor. Are they easy to change. No doubt they will cost a small fortune!

Cheers Al.

[Crasher]

There is nothing particularly wrong with a BMN, it is just that you had not told us so I stated it for the benefit of others. The motor is easy to change but expensive.

[NHN]

Hi Crasher, does it need to be dismantled internally for the flaps to be replaced or just the motor swapped externally mate, TIA.

[Crasher]

It is normally just a matter of changing the motor BUT I have also seen damaged linkages.

[NHN]

Thanks for the speedy reply mate, missus car has the errors, adapted, but they return & seems down on power & says economy also down, so I will grab a motor & swap out, seems fairly straight forward, just pita to get to bolts, soon find out when this bloody rain stops lol.

If its the linkages then its a whole new manifold, she wont like that as the cam lobe wore a hole through, rounded cam of & fuel pump nipple worn to an angle, ouch, lucky I could do most except the cam, but 2 year warranty with audi on that work.

[panscrub]

There's no linkages on it bud,its not the flaps inside the manifold,its the unit which bolts up to the manifold.The flaps inside the manifold on the BMN run from a vacuum which will not show up on a scan as no electrics involved.Easy job just fiddly.

[NHN]

Well I've ordered the motors (given only denoted by a visual check which ones needed, pita but alas) for her AXX engine for tomorrow, we'll see if this fixes her issue, ordered new coupling arm incase it gets snapped lol.

[NHN]

Ok so that job was a little fiddly to do, only because of the bolt locations, but sorted, calibrated & all seems well now, 5th/6th has its power back & you can feel it allot smoother, the woman is very very happy & saved her the labour cost

Only broke 1 old brittle flexy breather pipe, although the bloody oil cap extension part on the rocker cover snapped of, when I removed the engine cover, but I bonded this back on with topfix which is basically like a weld joint now lol, all's good, if I find a used rocker then I'll swap it out & replace breather.

Runs like a dream now.