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Old 10-12-2013, 12:22 AM   #1
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Pcv system?

I went to clean my intake system today and found a bit of oil build up on the inside of the throttle body and in the opening on the intake manifold. Naturally I went to check my pcv valves and for the life of me I can't find them! What's the situation with the pcv valves on a 2006 gt? Am I experiencing blow by or is this normal?

The reason I went into my intake system anyways is because I noticed as I'm slowing down to a stop, the tach will bounce between 500 and 900 then settle at 900 when I do stop.

Anyone?
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Old 10-12-2013, 08:30 AM   #2
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When I cleaned mine it was pretty dark substance with the cleaner I used it the first time when I did it an it was pretty dirty I to had the same issue an couple times I stalled in an automatic lol so I had to fix the issue
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Old 10-12-2013, 11:33 AM   #3
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My 09 gt does that too...I don't know why. I do have a Bama 93 tune, so I'm not sure if that has anything to do with my tach bouncing around. Mine sometimes drops too 300 and shoots up to 1100 when I come to a stop. I tightened and pushed down my pcv valve and it seemed to help it a little bit, but not by much. The pcv valve is located on the passenger's side valve cover and connects to your intake/cold air. The stock valve has a little green clip on it.
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Old 10-12-2013, 12:05 PM   #4
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So it's just that hose assembly with the green clips on either side between the intake tube and the valve cover? I pulled mine off and it seemed like just a regular tube, I could blow through it both ways without restriction... Where's the actual valve?
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Old 10-12-2013, 12:48 PM   #5
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To my knowledge its just a hose, yes. The valve itself is what the hose came off of on the valve cover. I slid my hose onto my cold air intake when I installed it and didn't push it up far enough, so I believe it was causing a vacuum leak. You really have to make sure the hose is up against both connections really tight. But, I do know that the jumping in rpms is from a vacuum issue.
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Old 10-12-2013, 03:40 PM   #6
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Ok thanks a ton I'm gonna look over it all again tonight and hopefully get it nailed down.
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Old 10-12-2013, 04:03 PM   #7
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There isn't a PCV valve like you used to see that plugs into the valve cover. Oil in the intake is common on the 4.6. Get yourself a catch can. Try cleaning the throttle body it might help with your idle issues.
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