Questions abt PCV - Jeep Commander Forums: Jeep Commander Forum
Regular Service / Maintenance This section contains discussion about regular service and maintenance (upkeep) of your Jeep Commander

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post #1 of 4 (permalink) Old 10-28-2016, 02:38 AM Thread Starter
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Questions abt PCV

Hi guys, new member here

My wife got me a 2007 Jeep commander 3.7L (can't complain) and I'm starting to run into some issues..

Long story short, I was poking around the front, I noticed couple of valves (guessing) that kinda look like they're leaking, but I can't seem to find diagrams or info on what they are...

I think this is the PCV? (driver's side)


This is one of the "valves" that seems to be leaking some oil (passenger's side)


And this is the other "valve" that seems to be somewhat leaking (passenger's side as well). This is connected to the hose that goes to the air box.

(another view)



Please excuse the awkward photos


Can anyone share some insights as to what these parts are? Some of them look very inaccessible, has anyone around here needed to replace them?
Appreciate the help!
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post #2 of 4 (permalink) Old 10-28-2016, 11:08 AM
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Join Date: Dec 2014
Location: East Meadow, NY
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Model year: 2006
Trim Package: Limited
Power-Train: 5.7L V-8 Hemi
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Sorry, not to much help from me. I have minimal knowledge of the 3.7 and I am not near my manuals to look it up for you, AllData does not work where I am at.

With that said, the first picture does appear to be a PCV location with minimal residue flash. Do you hear air from these? You can buy an all new plastics tubing kit from the dealer for all the 'hard' line air that is on top of the motor. This is actually a replacement interval item at around 75,000 miles or more. I always keep the plastics fresh at 7 to 10 year intervals on vehicles I have maintained.

Should be less than $100 to change all of it. PCV valve is super cheap not to just change it out anyways just for general purpose.

The bottom picture could be, if it is coming from the air box, an oil return line back into the oil reservoir. Some vehicles have a 'catch can' like portion in the air intake and lets the heavier particulates fall back into the pan.

Again, no real world experience with the 3.7, just educated guesses.

Dave

'06 Hemi Limited 4X4, 6(ish)" lift, 35" General Red Letter, 2" spacers, Mopar CAI, RER and mygig lockpick, blue Interior LEDs, stub antenna 3", Callahan Red Brake set, 6.1L SRT8 exaust headers, full custom 3" exhaust from headers back, Fastman 847 ported TB, BBK Fuel Rails, 6.1L injectors, JBA UCAs, Nitro gear 4:10, SA hidden front winch mount.
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post #3 of 4 (permalink) Old 10-28-2016, 11:55 PM Thread Starter
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Great data, thanks!
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post #4 of 4 (permalink) Old 10-29-2016, 01:16 AM Thread Starter
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Based on this diagram, I think they are Fitting nipples for the Crankcase vent tube:

Crankcase Ventilation 3.7L [EKG]. Fits: 2007 Jeep Commander SPORT 4x4, 3.7L V6, 5-Speed Auto W5A580 | Mopar Parts Webstore

In case someone is looking for diagrams: More info (navigate to get to diagrams) on
OEM 2007 Jeep Commander SPORT Engine, Fuel System, Transmission and Driveline Parts Online | Mopar Parts Webstore
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