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#2
12-28-2005, 07:59 AM
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Re: pcv valve ?
It depends on the mileage on the car and age of the PCV valve. Replacing it should be done as routine maintenance. Depending on which engine you have in your GP, a bad PCV valve can cause engine vacuum related problems, affect MAP, and possibly trigger emissions related odb-ii DTC error codes like EGR flow test problems.
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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines 
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#3
12-28-2005, 09:41 AM
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Re: pcv valve ?
Yep, as Bnaylor stated, the possible hassles that a clogged PCV can cause are not worth saving the $3 they cost. Considering they take less than 5 minutes to replace, change it.
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#4
12-28-2005, 12:15 PM
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I just replaced mine in my 2000 GTP after 135,000 miles. It is my DD that I drive 80+ miles a day. I monitor my gas mileage pretty carefully, (what else is there to do on CA freeways?), and it seems as though I picked up about 1 MPG going from an average of 23.5 to 24.5-25 MPG.
The PVC valve did not seem clogged when I pulled it out but I feel the new one probably offers benefits. Plus it is only $3.00 and 5 minutes of time to change it. I had changed the fuel filter a week earlier. The original was totally clogged and believe that to be an important maintenance item as well that may have contributed to the gain.
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