new rs4 with problems , help please

[white.akita]

I'm no mechanic, but this may help

viewtopic.php?f=35&t=121483&p=808526&hi ... ak#p808526

Thanks for that, I wonder if I put a one way valve inline with the pipe that goes under the manifold that it may fix the problem. Last thing I want to do is lift the manifold.


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[white.akita]

If I unplug the vac line I pictured I can suck air through it so it must have a leak somewhere.
I may squirt some wd40 in it and then use a airline to see where it comes out at ha.

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[jonytek]

Mate let someone who knows what they're doing take a look or get a proper scan. I'm not sure you're going to solve it by spraying wd40 around.

[white.akita]

That was a joke.
I'd rather fix it myself, just some pointers would of been nice as I've never worked on a rs4 before but never mind I will fix it.
No sure the point of this forum when everyone just says take it to a garage to be fixed ha.

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[rs user]

to fix problems on these a Vag Com is really handy
a mittyvac copy at a tenner or so wouldnt go amiss either
you can actuate solenoids and get up to all sorts of mischief with vag-com
i share your pain with d.i.y -i bought one the other day and it would turn over and not start
didnt recieve any advice/pointers-but probably because the normal starting issue is not to turn over at all[had that on my last one]
a lot of folk dont seem to do much d.i.y but others do it all

[dougle_turbo]

That was a joke.
I'd rather fix it myself, just some pointers would of been nice as I've never worked on a rs4 before but never mind I will fix it.
No sure the point of this forum when everyone just says take it to a garage to be fixed ha.

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Lots of people on here carry out their own work, but as has been said, Vagcom will highlight the specific problems. This will allow you to concentrate on the specific area of the engine/system that has a problem.

Its very difficult to give advice when 1. We don't know the exact fault codes (generic scanners don't give enough detail) and 2. By pulling pipes and wires you may well be creating more faults and problems. What people don't want to do is give you duff advice, that damages the car, hence why they keep saying get it scanned properly at a garage (if you don't want to buy Vagcom). You can't easily fix a problem without an accurate diagnosis.

[white.akita]

Thanks for the replys.
I ordered a mityvac and it's supposed to be coming today.
I have the free version of VCDS on a old laptop so I will get the codes read.
But I do know I have a huge vacuum leak somewhere and just need to find it.

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[pule333]

That was a joke.
I'd rather fix it myself, just some pointers would of been nice as I've never worked on a rs4 before but never mind I will fix it.
No sure the point of this forum when everyone just says take it to a garage to be fixed ha.

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You need to be well established character to not be taken seriously when making jokes
If you want to fix your own car, a proper version of Vagcom is essential. Rs4 is no different to any other car in terms of DIY. But you absolutely need to know where to start. There possible 100s of scenarios where vacuum leaks are present.
Also, don't think you should start throwing "point of this forum" card around, it's a sure way to get ignored or alienated.
My point being, the info you provided is not enough to give you sound advice.
The best advice already has been given.
A) take it to garage to get proper diagnosed
B) buy proper diagnostic tool to do it yourself.
And please don't just unplug random lines, cables etc when the car is running..

[Jon_J]

That was a joke.
I'd rather fix it myself, just some pointers would of been nice as I've never worked on a rs4 before but never mind I will fix it.
No sure the point of this forum when everyone just says take it to a garage to be fixed ha.

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There are several points to this forum. If you were after a way of fixing your car without spending any money or using the correct diagnostic tools then yes, I guess the forum is pointless.

A health check is a couple of hundred quid and will most likely tell you the issue. You can then fix it yourself. Buying a cheap version of Vagcom is pointless.

I had a read through this and I am unsure where the vacuum leak has come from? How did you diagnose that this was the issue?

Not knowing the RS4 as you say, how do you know what pipes should have what vacuum? How do you know they don't have a vacuum when being driven, idling is very different.

As Pule333 says, be careful what you write, you come across as someone who bought an RS4 with an issue, doesn't want to spend any money fixing it so joined a forum for some advice, but then when you don't hear what you want to hear describe the forum as pointless?


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[white.akita]

That's true I bought a rs4 with problems and would like to fix them myself like I have done with over a hundred other cars with help from forums.
I don't need anyone to tell me that it's best to take it to a garage and let them fix it.
I have tried to get codes with VCDS life but it won't connect to the engine controller.
I have a aquantence coming tomorrow to give it a full VCDS scan.
I will post the results and hopefully then someone can offer some help.


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[white.akita]

My scanner says that the vacuum pump is OFF with the engine off and running.
Anyone know how to turn it back on !

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[rs user]

as i said normal Vag Com is no good-you need the modern hex can one-mine is a copy type so wont update but plenty good for what i need
try this for codes
vacuum pump only runs when needed-there is a switch on line /servo
https://www.google.co.uk/url?sa=t&rct=j ... Var9tSD5jQ

and this for insight
https://www.google.co.uk/url?sa=t&rct=j ... 37lQqhNzsg

[white.akita]

thanks very much, if i go for a ten minute drive then disconnect a vacuum pipe there is no vacuum in there whatsoever. everything i have read within this website and other websites say there should be vacuum in the system after the engine has been run for a short period. i have just ordered VCDS 17.1 so hopefully that can pinpoint the problem.

[white.akita]

thanks for them links, they seem to be exactly what i needed, a mityvac and VCDS is being delivered tomorrow so i can make a start.

[white.akita]

I have done output tests and basically everything to do with vacuum failed.


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