Intake Manifold Flap Motor v157

[SeyiiOluwa]

Hey guys, I'm kind of new to this, and  I've searched a few places but haven't been able to find a Mk5 forum with knowledgeable people like on here.

So I bought my Mk5 (TDi please don't shoot me ) in October and the emissions light has been on ever since. Whenever I plug it in it says

P3101 : motor for intake flap
V157 : open or short to ground

Been to VW and they quoted just under £700 to fix, another local garage near uni said they'd do the same job for just under £400. My local mechanic had a look and said that my throttle body is new so shouldn't need replacing (i'm guessing this fault has something to do with the throttle body). I've booked an appointment to see him so he can clean my intake manifold (and delete my EGR) as he claims this will clear the fault.

Since i've had the car I haven't had any power issues (but that may be because I don't know what the car is supposed to feel like). Am I making the right decision by going to clean the manifold or will that be another waste of time (and money). If I need to spend the extra money then I'd rather not go get the manifold clean.

Sorry if its already been covered in a previous topic

[Vagperformance]

There's a fuse that pops when that unit goes faulty, it's in the engine bay on the n/s of the vehicle

[SeyiiOluwa]

There's a fuse that pops when that unit goes faulty, it's in the engine bay on the n/s of the vehicle

Do you know which one it is? I can check my handbook. Been to the garage again today and they reconfirmed that the throttle body was fine. Hopefully you're right

[Vagperformance]

I honestly can't remember, got a feeling it's a 10amp fuse. If you have the ignition off just pull the fuses individually, you'll see if it's blown or not.


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[AIR_CHILLED]

Hey guys, I'm kind of new to this, and  I've searched a few places but haven't been able to find a Mk5 forum with knowledgeable people like on here.

So I bought my Mk5 (TDi please don't shoot me ) in October and the emissions light has been on ever since. Whenever I plug it in it says

P3101 : motor for intake flap
V157 : open or short to ground

Been to VW and they quoted just under £700 to fix, another local garage near uni said they'd do the same job for just under £400. My local mechanic had a look and said that my throttle body is new so shouldn't need replacing (i'm guessing this fault has something to do with the throttle body). I've booked an appointment to see him so he can clean my intake manifold (and delete my EGR) as he claims this will clear the fault.

Since i've had the car I haven't had any power issues (but that may be because I don't know what the car is supposed to feel like). Am I making the right decision by going to clean the manifold or will that be another waste of time (and money). If I need to spend the extra money then I'd rather not go get the manifold clean.

Sorry if its already been covered in a previous topic

Hello,
I have recently changed this  flap control valve on my diesel ('54 A3 2.0TDI Sport)
The throttle body / intake flap is there to control emissions when engine is warm and at idle e.g sitting in traffic. It's main function though is a anti-shudder valve and is used to stop airflow when engine is switched off to promote a smoother stop.
The two main causes why it is blowing the fuse is if the plastic gears have stripped or the electronics fail. (Mine filled with oil through the worn sealing bush on the spindle)
I bought the valve from Eurocarparts for £100 with promotional discount and the seals from Audi.
While I was at it I cleaned the EGR valve, fitted a EGR OEM restrictor gasket from an Audi 80 and changed the intercooler seals.

Quoted £700 is a joke and £400 pounds is also laughable. The OEM part that Audi sell for £250+ Eurocarparts sell (Pitsburgh or something)
Easy Diy If you handy with the spanners.
Hope this helps.
Cheers,
Mike.

[SeyiiOluwa]

So I've finally got the light sorted. Went to the mechanic and they looked under the bonnet and saw that all the suspected parts had already been replaced

After some tests we discovered that it was faulty wiring from a previous job (before I bought the car). A few hours and £200 later the car was fixed and I was on my way back to London to finally enjoy a fully working vehicle (throttle response was night and day)

My joy was short lived as the following day the light came back. To cut a long story short I ended up driving 65 miles back to the mechanics (angry as ever) expecting them to give me a free fix only to discover that my EGR was receiving intermittent signal.

Apparently this fault wouldn't have been detectable until the intake manifold issue was sorted meaning that I had to replace the EGR at a cost of £150

£350 and 260 miles later my car is fixed. No lights on the dash but it drives the same as it did when my intake manifold wasn't working.

I'm now wondering why I had a nice throttle response for a day and now that everything is done the car isn't driving much better. I thought clearing the light would make the car feel better. Maybe I need to do some more repairs or wait till I service it (due in 2800 miles)

[SeyiiOluwa]

Big thanks to @air_chilled and @vagperformance for your input. Really appreciated

[Vagperformance]

Did it sort it?


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[AIR_CHILLED]

Yes I'm interested to know if you sorted it?
My poor throttle response at low speeds is down to the intercooler hoses / pipes leaking which I'm trying to sort out now.
It's frustrating when one fault /area is masking the other and effectively you have to pay out twice! £££ :(

[SeyiiOluwa]

@vagperformance @air_chilled

The car is now sorted but it doesn't drive as well as I believe it can. I feel like I wasted money removing the warning light and replacing the EGR. When I get paid I'm gonna get the car checked out again, maybe there's something else that needs to be changed/fixed :(

I've been stalling the engine a lot more for some reason. Because I drive a dirty diesel I normally take off with my torque and add the extra boost if needed. Since fixing the car the torque (or something) has dropped as my driving style now makes me stall

[yarickpi]

did I misread the question? you seemed to be wondering if when installing your new intake manifold if you should do VTCS delete as well, and I responded by saying that the VTCS is located in the stock manifold so by switching manifolds you will already be removing VTCS.

[NotNormal]

@SeyiiOluwa they really need to be adapted via VCDS to make the most out of the new part.

If you're local to Lincoln PM me and i can sort it for you. Otherwise, look on the VCDS register on here and PM a local person

Hope it helps

Tom

[SeyiiOluwa]

did I misread the question? you seemed to be wondering if when installing your new intake manifold if you should do VTCS delete as well, and I responded by saying that the VTCS is located in the stock manifold so by switching manifolds you will already be removing VTCS.

I was wondering why the car didn't improve in performance after repairing the manifold wiring and the EGR

[SeyiiOluwa]

@SeyiiOluwa they really need to be adapted via VCDS to make the most out of the new part.

If you're local to Lincoln PM me and i can sort it for you. Otherwise, look on the VCDS register on here and PM a local person

Hope it helps

Tom

Thanks for the help, is this the same even for an EGR replacement ??

[NotNormal]

@SeyiiOluwa they really need to be adapted via VCDS to make the most out of the new part.

If you're local to Lincoln PM me and i can sort it for you. Otherwise, look on the VCDS register on here and PM a local person

Hope it helps

Tom

Thanks for the help, is this the same even for an EGR replacement ??

No, erg replacement is a straight forward swap - no adaption required