Location of pc valve on 2007 mountaineer - 2007 Mercury Mountaineer

SOURCE: 1997 Mercury Mountaineer

if the engine is a 4.6L the pcv will be on top and in middle of pass side valve cover.pull to remove.
if the engine is a 4.0L the pcv is located at the rear(firewall) of drivers side valve cover.this pcv has lock tabs holding it in,turn then pull to remove,the lock tabs are part of the valve cover so take care when removing not to harm tabs.

SOURCE: OBD II Location 07 Mountaineer

I'm going to take a guess and say likely to be in the passenger compartment. Sometime, they are near the glove box. You can also look under the driver side compartment. There should be a plastic protective cap. Use a flashlight.

Marvin

• 85242 Answers
• Posted on Aug 20, 2012

SOURCE: avalanche 2007 where is the egr valve location

Rear right hand side of engine compartment