DIY write up: PCV valves, 1.8t

Spirare · Jan 16, 2005

A couple of months ago 'someone' noticed some oil leaking out of the A4 (97 1.8t, AEB). The culprit was the Pressure relief valve on the inlet side of the turbo. I found the part in my Bently, it's number 6 in the image:

I decided to also change the PCV on the crankcase. Here are the new valves and part numbers:

Here are the tools you need:

Here is the "034" valve in the car:

Here is the "058" valve in the car:

This is a closeup of the "034" valve:

Instructions? I don't think that you need them based on the images.

Notes:
When replacing the 058 valve you may find it simpler to pull one side of the valve and put the new one on prior to fully removing the old one. It will prevent you from putting it in backward on accident.

The 034 hoseclamps are a hassle to reach. Make sure you put them back on in the easiest orientation for future replacement.

This is a simple job and the parts are cheap. $24 for the 034 and about $9 for the 058. These valves should be swapped out as maintenance items.

I did this write up and work on my Audi. The engine is the same as a Passat. It should be helpful. If a mod wants to move this to Tech/Info please do!

Oh my image with the part numbers has the wrong letter on the '034'. it is part #034-129-101 B NOT ...-S.

pete1 said:
PCV Part Numbers...
PCV-1998-2000
PCV-2001-2002
PCV-2003-2005

modifiedA4 · Jan 16, 2005

nice write-up...this link is also a good reference for this.

http://www.passatworld.com/forums/showthread.php?t=138611

VW'ed · Jan 16, 2005

With all these oil issues on the 1.8T sprouting up, a very relevant maintenence write-up..:thumbup::thumbup:

John_E · Jan 17, 2005

Perhaps I am just being "thick," as our British friends would say, but I cannot find any PCV replacement procedures and pictures in my Bentley manual. Nor can I find any mention of PCV inspection and servicing in my owner's manual's maintenance schedules. Until recently, I did not even realize we were blessed with TWO valves; I had been blissfully ignorantly inspecting only one of them! Thanks for posting; this is indeed a VERY important topic.

andros · Jan 17, 2005

I have 140k on my AEB and I have never done any maintanence in regards to the vaccum/PCV system.

For the first time since I've owned this car(almost 6 years), I have to go through emissions testing. By the end of this month.

The car runs great and I think it will pass, but lately with all this talk of PCV valves and oil in the vaccum lines I'm a little worried.

I've done a several searches but I can't seem to find what I'm looking for.

Does anyone have a complete parts list for the PCV/vaccum system?

or Atleast everything that should be replaced as maintanence.

TIA

Jim

andros · Jan 17, 2005

Also I've been searching online parts stores to try and locate them and I don't seem to find much.

Is this due to the fact that you have to get them from the dealership ?

Jim

Spirare · Jan 17, 2005

andros said:
Also I've been searching online parts stores to try and locate them and I don't seem to find much.

Is this due to the fact that you have to get them from the dealership ?

Jim

GermanAutoParts.com. They are actually located up the road from me. Great prices and reputation. Talk to David. They can get the parts.

turtle · Jan 17, 2005

John_E said:
but I cannot find any PCV replacement procedures and pictures in my Bentley manual.

So true.
There are some diagrams in the book, but that is it. Interestingly they are in the charge air system section, Group B21.

IDriveB5 · Jan 17, 2005

thanks for the info!

John_E · Jan 17, 2005

turtle said:
So true.
There are some diagrams in the book, but that is it. Interestingly they are in the charge air system section, Group B21.

Thanks, turtle! I feel (a little) less stupid.

not_too_shabby · Jan 17, 2005

What do you guys think should be the maintenance interval on this? Every 4-5 years? It seems it would be better to do a replacement than wait till symptoms start appearing.

Spirare · Jan 17, 2005

not_too_shabby said:
What do you guys think should be the maintenance interval on this? Every 4-5 years? It seems it would be better to do a replacement than wait till symptoms start appearing.

Given the cost and ease of replacement I'm going to change them when I change my DV. Every 15,000 miles.

B5V · Jan 17, 2005

Great write up, Spirare. I'll include this service in the next oci @ 50k.:thumbup:

JETninja · Jan 17, 2005

SWEET!!!!!!!!

Mine (111K) has been leaking a bit around the valve cover.....been thinking of this and wondering how to do it! Thanks ever so much!

pancreas · Jan 17, 2005

Nice writeup

JETninja · Jan 18, 2005

Mods, can we get this moved to the Info forum please? As the miles go up, it will become more revelant......

DIY write up: PCV valves, 1.8t

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