PCV VALVE

MikeStrachan

S3 ALl GRUNT WITH THE SHUNT!
Yes I replaced mine a few weeks back
 

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WillkelsallS3

Registered User
My car is running really badly seems like it’s in limp mode and Judders all the time does that seem like a problem with the pcv valve? At first I was told a couple of spark plugs were down so had all them replaced and still have the same problems just a lot worse and since been told there’s a problem with the pcv


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MikeStrachan

S3 ALl GRUNT WITH THE SHUNT!
IF you plug it in mine came up misfire on alll four cylinders.

Mine was revving on idle and was shuddering going down the gears.

What I would do is start your engine and try and take your oil cap off if you can’t take it off replace the valve and gasket. I paid 58 quid from vw as it’s the same part. Only takes 20 mins to do or quicker if you don’t have a nightmare of a engine cover to get off.
 

WillkelsallS3

Registered User
Yeah sounds like the same problem!! Is it located in the rocker system or something like that? I spoke to Audi and he said it could be a few places



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MikeStrachan

S3 ALl GRUNT WITH THE SHUNT!
It’s at the front of the engine I’m replacing a few things tonight’s so I’ll take a picture where it located tonight.
 

WillkelsallS3

Registered User
So I did the oil cap test and I couldn’t remove it so I’ve changed the pcv valve and gasket but it’s still running very badly rough idling so any other ideas what it could be could I have done some serious damage I did drive about 180 miles with it like that back from the airport


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MikeStrachan

S3 ALl GRUNT WITH THE SHUNT!
IM not too sure as mine was fine after sounded like it needed replaced anyways

Any hoses loose or anything
 

WillkelsallS3

Registered User
No nothing loose that I can see it seems better than what it were but still not right


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Daveyonthemove

Well-Known Member
VCDS Map User
Are you able to get someone to log some data on it?
The VCDS map at the top of the page might help you track down someone local.
 

WillkelsallS3

Registered User
I’ve had a bloke put it on a basic machine and it’s saying something about fuel


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WillkelsallS3

Registered User
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Just had it on a snap on machine and these came up but when he cleared them the only one that came up was the fuel pressure sensor one


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WillkelsallS3

Registered User
What do you suggest I do then I’m useless at this but the mechanic thinks it could be a fuel pressure sensor I have no idea what to buy and where from



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ch1z64

C'mon you's bhoy's in Green
VCDS Map User
Silver Supporter
What do you suggest I do then I’m useless at this but the mechanic thinks it could be a fuel pressure sensor I have no idea what to buy and where from



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If you trust your mechanic then replace the fuel sensor if not then find somewhere who specialize in Vag cars as they will have a better idea a little more pricey but worth it . If you dont know off any garages in your area put a post up asking if members could tell you off any they have used .
 

Daveyonthemove

Well-Known Member
VCDS Map User
The problem with fault codes is they don't often give you the direct problem, thy guide you in the rough area.
A good mechanic should be able to rule out one or more of the possible issues by process of elimination, and experience.
 

ch1z64

C'mon you's bhoy's in Green
VCDS Map User
Silver Supporter
I think I’m just going to take it to Audi


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Its worth putting a post up to see if any the lads on here know off any good garages around where you live as it could save you a pretty penny
 
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