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How VW Parts Fail ~ 2.5L Valve Cover with PCV Valve

Published on September 1, 2015 under Video

How VW Parts Fail ~ 2.5L Valve Cover with PCV ValveOn this episode of “How VW Parts Fail” we are looking at the failure of the 2.5L PCV valve built in to the valve cover. This engine was the common engine in many VW cars. The Jetta, Rabbit, Jetta SportWagen, Beetle and Passat all came with the 2.5L engine. The valve failing could cause the check engine light to come on, as well as a rough idle. Today we are going to look at how it fails, as well as how to diagnose it.

Sponsor Of The Day
Today’s show is sponsored by Deutsche Auto Parts. They are the VW and Audi parts experts. They have great prices and awesome service. Plus they work really hard on a ton of VW DIY videos. Paul and the fellas at DAP are awesome. Also check out their new site at SHOPDAP.com

Join me as we break down(hopefully not):

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As always, your questions and comments are welcome.
Please post them below. If you would like to suggest a part of a show like this, email me Charles(at)HumbleMechanic(dot)com. Thanks again to Deutsche Auto Parts for being such a great sponsor.How VW Parts Fail ~ 2.5L Valve Cover with PCV Valve

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3 Comments

  1. Daniel

    Hi Humble Mechanic! Thanks for all of your insight! I am stumped here. I have a 2010 VW Jetta SE 2.5L. I changed the Pressure/Temp sensor 3 times, replaced the pcv valve, and last resort, even bought and replaced the entire valve cover. Somehow, I keep getting the P0106 Manifold Absolute Pressure/ Barometric Pressure Circuit Range / Performance and P2188 System too rich at Idle Bank 1.

    It seems to only happen when it’s in the lower 40’s and 30’s. It seems to be completely fine when it’s in the 50’s and warmer. Whenever the code turns on, I take it all apart and look in the manifold where the sensor is and there is oil in there. It seems to still be coming from the PCV even after replacing the entire cover. My biggest curiosity is this. I have been using 0W40 by Mobil oil because Mobil oil claims that is the correct viscosity. Could it be possible that it is getting into the manifold when it’s so cold outside because I need to be using 5W40 instead of 0W40?

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