1997 Park Avenue PCV Valve Location ? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 11-24-2012, 06:14 PM   #1
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Red face 1997 Park Avenue PCV Valve Location ?

Where is the PCV Valve location on this 97 Pk.Ave 3.8 motor series II ??
How dumb am I anyways?
So much for the days where you rattle it,clean it & re-install it !
Thanks in advance for re-re info / location !!
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Old 11-24-2012, 06:24 PM   #2
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Oooh! I think I know where its at!!!

1. Disconnect the electrical connector
2. GENTLY pry away the top 2 plastic tangs. This will allow you to gently pull up on the Manifold Pressure Sensor.
3. Where the MAP sensor was at, you will notice a nut looking thing with a hole in it. Your PCV valve is below this cap. I don't remember what size socket is used(maybe 15mm)
4. Just like the cap on a medicine bottle, push down with the socket and turn it counter clockwise to remove the cap.
5. Use needle nose pliers to pull the PCV valve(its metal) out. Careful of any o-rings. They either come out with the valve, or stay in the plenum.

This should apply to ALL 1996-2005ish 3800 Series II L36 NON-supercharged engines.


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Old 11-24-2012, 06:32 PM   #3
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Thanks Mike!!!! Greatly appreciated ! You'r the best !
Another new part to order & get installed!
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Old 11-24-2012, 06:34 PM   #4
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Um, what brought you to the conclusion that you needed a new one? Best way to test the PCV valve is to shake it. If you hear something rattle, than its fine.
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Old 11-24-2012, 06:49 PM   #5
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Mike,
I think I am getting some oil blow by... maybe (seal) ..or crud from previous owners lack of care?
Anyways might as well clean things up & just throw a new one in once I am in there....
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Old 11-24-2012, 07:10 PM   #6
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Where are you seeing this oil from? If your seeing it on the backside of your throttle body, good chance its coming from the EGR. Which would be carbon buildup. If your seeing oil around the LIM bolts, then either the UIM gaskets are going, or the oil is seeping up the LIM bolts. Could be any one of those possibilities.
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