Where is pcv valve on a honda 2007 ridgeline

SOURCE: pcv valve

The positive Crank Case Ventilation (PCV) is coming from the intake manifold and usually goes to the Valve cover On that year it could be in the back of on the side of the Rocker covers ( Valve Cover) find the Vacuum line coming out of your intake and follow it, It should lead you to the Pcv

SOURCE: in cab air filter

behind the glove compartment, you have to disconnect the box damper and remove the glove box stops, let the glove compartment hang down and the filter is in front of you in the evaporator housing behind a cover.

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SOURCE: Honda Ridgeline Service Manual

4WD only operates when gear selector is in L and under 18 mph. the rest of the time your 4Wd will activate automatically if the front wheels start to spin,

SOURCE: PCV valve for 2004 Hona CRV

poor advice on not replacing the PCV valve. Dirty throttle bodies, dirty oil re-introduced back into the crank case and less efficient valves are all serious concerns, particularly if the oil isn't changed regularly.

I wouldn't go over 60K without replacling it