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-   -   Location of pcv valve? ( 07-30-2011 01:30 AM

Location of pcv valve?
Where can I find the pcv valve on my 2007 Jeep Grand Cherokee with a 4.7L V-8 engine? I would really like to change it since I just purchased the vehicle and it has 67,000 miles on it. Also, what is the EGR valve? Is that something I need to change?

SvenskaJeepGuy 07-31-2011 10:52 AM

Re: Location of pcv valve?
right on the tube where you add the oil........... welcome to JG. the EGR valve fails around your milage so you could replace it, it is in the back of the engine and a PITA to change. 07-31-2011 04:20 PM

Re: Location of pcv valve?
No, mine is not on the tube where I add the oil. That's where it is supposed to be but not mine for some reason and I have two 2007 Jeep Cherokees and neither one is on the tube. Hmmm???? mystery.

remmy 07-31-2011 04:47 PM

Re: Location of pcv valve?
1 Attachment(s)
Here ya go :)

bradley4kc 08-30-2011 08:00 AM

Re: Location of pcv valve?
I have an 07 4.7L V8 flexfuel. I have seen a picture somewhere on here that shows the location of my pcv valve. It is on driver side header closest to fire wall. There is a visible blue clip on it where it goes into the header. I am hoping someone has changed that with some advice.

bradley4kc 08-30-2011 10:57 AM

Re: Location of pcv valve?
6 Attachment(s)

Got the new pcv valve from dealer and replaced it. The old one was dirty but the machanism still rattled. Maybe could have gotten away with sprayin it with carb/brake cleaner -but - I figured I already went through the trouble to figure this out and get the old one out. So, I put the new one in:

It just screws in and out. Caution: if you just drove from the shop to get the part, then the one you're taking out will be hot. There is a hose that seats on top of the valve - just pull it off. Used a set of channel locks to unscrew the old and set the new one. (If you look at the fourth pic closely you can see it threads in just past the rear of the fuel rail). Reattatched the hose to the top of new pcv valve. Piece of cake!

The WK has around 54k miles and was having an erratic idle that hovered around 500rpm's. Now it purrs along at a steady 600rpm's. Plus, while I was figuring all this out, yesterday I changed fluids in front/rear diffs &
t-case, and changed brake pads. A good couple days work.

kg2mb 08-30-2011 11:04 AM

Re: Location of pcv valve?
On my 3.7 its like the pic remmy has. does it pull off off the filler neck
or is it twist 1/4 turn or?:confused:

igotquestions 04-21-2012 02:05 PM

Re: Location of pcv valve?
Wierd, I have a 3.7 too and its not there.

hankdz 06-21-2014 01:30 PM

Re: Location of pcv valve?
Thanks. I found it located back of beyond on driver side. It is really tight back there. It takes a 1 3/8 inch socket to remove the whole assembly. There wasn't enough room for either the socket walls or a channel lock to fit back there to remove the whole assembly. So, I didn't.
I disassembled the new PCV valve removing the plastic (black and blue parts) and the "O" ring. I removed those same parts from the old PCV valve and left the metal body screwed tightly into the intake. I then screwed the new plastic parts into the old metal body part and was good to go.
Of course, that was after about an hour and a half trying to remove the whole old assembly with no success.:)

Strongjeff 06-22-2014 03:41 AM

Re: Location of pcv valve?

Originally Posted by igotquestions (Post 616900)
Wierd, I have a 3.7 too and its not there.

depends, what year is your 3.7. mid 07 and up it was towards the back on the drivers side head. that's where it is on my 08.

hankdz 06-22-2014 01:19 PM

Re: Location of pcv valve?
This one has the 4.7 L V8, not the 3.7 L V6.

Strongjeff 06-22-2014 03:35 PM


Originally Posted by hankdz (Post 1041151)
This one has the 4.7 L V8, not the 3.7 L V6.

The 3.7 and 4.7 are the same engine with the 3.7 having 2 less cylinders. They are layed out the same

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