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Old 03-27-2011, 10:07 PM   #11
worksite
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Join Date: Mar 2011
Location: Brookhaven, Pennsylvania
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Re: Codes P0171 And P0174

You do not need to take the upper manifold off in order to replace the PCV valve. Remove the top air cleaning house and remove hoses. next disconnect IAC (Idle Air Controller), MAF sensor, and the throttle body electrical connecters. Remove throttle body and you will have plenty of room to remove PCV valve. I used long handled needle nose pliers to remove the PCV valve. reinstall all parts and be on your way!
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