The term 'manifold flap' is used by the diagnostic software, but is totally inaccurate when applied to the V157. In FSI world, the manifold flaps are actually inside the inlet manifold and are used to make air swirl upon entering the cylinders. The V157, which features only on BHC and ATL variants of the TDI, is an anti-shudder valve, primarily used to shut down the engine by means of oxygen starvation. It's not actually part of the intake manifold, but sits in the pipework that carries compressed air from the turbo.Oh, bless me, diesels have flap failure too?
Yeah,- my EML is on at the moment. It came on for a while the other day, had it scanned,- "Flaps"- I was told.... I hope, like you say Tom, that it's a ten minute job.... That'd be a relief..?The term 'manifold flap' is used by the diagnostic software, but is totally inaccurate when applied to the V157. In FSI world, the manifold flaps are actually inside the inlet manifold and are used to make air swirl upon entering the cylinders. The V157, which features only on BHC and ATL variants of the TDI, is an anti-shudder valve, primarily used to shut down the engine by means of oxygen starvation. It's not actually part of the intake manifold, but sits in the pipework that carries compressed air from the turbo.
The AMF variant of the TDI has a vacuum-actuated anti-shudder valve that's bulletproof, but the later TDIs use an electrically operated anti-shudder valve that has a number of failure modes. Thankfully, it's only a ten-minute job to change it.
Cheers,
Tom
It only comes on now and again, it's not done it for a month or so... only happens in cold weather. I guess I'll get the kit if, one day,- it stays on...It’s one electrical connector to unplug
Then using a flat screwdriver lift up the large C clip that retains the induction pipe. The C clip lift up about half inch and the pipe can be slid out
Then 3 off Allen bolts either 5 or 6 mm Allen key required a long series Allen key makes the job a LOT easier
No gaskets required as there is a O rings in the face
Just watch out for some of the Chinese copies as they produce fault codes for fun
Paul
Sent from my iPhone using Tapatalk