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motor for intake manifold flap

John Clutton Apr 17, 2018

  1. John Clutton

    John Clutton New Member

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    i had mine tested and got a fault p3103, motor for intake manifold flap (v157) malfunction. Do i replace this part or clean the motor,also if i replace does it need recalabrating to the ecu and if so does anyone know the code for this?
    cheers
     
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  3. Nessy

    Nessy VW + Audi mad

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    From reading around these units tend to fail and they either work or don’t, although some have achieved short-term success in cleaning them.
    I’ve just done this job on my car today and was a really easy job , 3 bolts with T30 heads hold it in.
    OK, the bolts are a bit tricky to get at but nothing impossible.
    Be aware that when these fail they also tend to blow one of the fuses in the radiator fan circuit (on the A3 anyway!) which then needs to be replaced or you will still get the engine management light on the dash.
    This caught me out today as I’d read it was Fuse 8 but in fact for my 2007 car proved to be Fuse 24 in the fusebox next to the battery.
    No calibration needed, just bolt it in, clear fault codes (and also fuse if yours has blown) and drive .
     
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  4. John Clutton

    John Clutton New Member

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    thanks Nessy
     
  5. John Clutton

    John Clutton New Member

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    this has now been replaced, but the shuddering is still happening. what is the next thing to try?
     
  6. Sp3no82

    Sp3no82 Active Member

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    Check all of your fuses
     
  7. John Clutton

    John Clutton New Member

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    all fuses checked and all are good
     
  8. Sp3no82

    Sp3no82 Active Member

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    I am having similar issued to you, I have just changed the ASV and it didn't stop the shudder, I checked everything I could and in the end I fiddled around with the connector on the wiring loom. The ASV now works intermittently so I belive it may be a bad connection in the plug. Worth a try
     
  9. John Clutton

    John Clutton New Member

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    sorry for late reply but could post a pic so i know what im looking for. this fault is now getting worse. going up hill is NOT good.
     
  10. Ape988

    Ape988 New Member

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    Does the car ‘judder’ when u turn it off? Like it turns off in a hard/aggressive way if u know what i mean. Either the el part is gone/or the oil went through it to the electric part or just needs to be cleaned. Usually while driving this should not make the car shake/judder. Just once u turn it off and it pulls the engine light on. If the unit is replaced and the problem is the same(the turn off thing/eng light) check the wires from it to the eng computer or just make a ‘bypass’ /new wires if the problem is intermittent. U should check the wires anyway before paying for a new unit, although wires werent usually the problem on audis, more on wv. If u clean it, if it has alot of sooth, position the motor so that the electric part is facing up, so no cleaner can get in it trought the seals.

    Edit: saw your last post, check the post i made in the other thread. This engine flap motor doesnt usually affect driving performance.

    Cheers
     
  11. Alex Griggs

    Alex Griggs New Member

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    Hi Guys
    just wanted to share my experience of a similar fault. I used VCDS to diagnose 2 faults on my A6 AVANT 2.0 TDi BRE engine.
    First was 000258 Mass Air Flow Sensor, quite an easy fix, just remove and clean with contact cleaner.
    Second was more of an issue, 012547 intermittent fault with Intake Manifold Flap.
    I removed the intake manifold flap and stripped it down to find it was full of oil, a result of overfilling the oil(I'd like to blame the missus, but I can't)
    cleaned it out reassembled and refitted and drove for ten minutes. code still present and now cannot be cleared. Now no longer intermittent, its now 012546- no signal.
    I read other comments about fuses and because I had no luck finding a blown one, I resorted to testing the connector to find it has power and a ground.
    I tested it's function on VCDS and it said 94.5% which I think in normal circumstances would be fine but on an open or shut case (pardon the pun)it would appear that any less than 100% is not sufficient for the flap to operate.
    So now I have come to the conclusion that I need a new one!
    If I have missed anything, or anyone has any advice, I would appreciate it.
     
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  13. Alex Griggs

    Alex Griggs New Member

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    As a side note I forgot to mention that I tried to re align the intake manifold flap motor on VCDS but was unable to do so, instructions on Ross Tech site did not seem to be inaccurate, unless my 22 years experience in the trade was a complete waste of time.!
     
  14. John Clutton

    John Clutton New Member

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    UPDATE well my car still has this issue still.....any chance it could be the clutch and flywheel?
     

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