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Old 07-30-2011, 01:30 AM
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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?
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Old 07-31-2011, 10:52 AM
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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.
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Old 07-31-2011, 04:20 PM
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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.
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Old 07-31-2011, 04:47 PM
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Re: Location of pcv valve?

Here ya go
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File Type: gif pcv 4.7.gif (19.0 KB, 117 views)
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Old 08-30-2011, 08:00 AM
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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.
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Old 08-30-2011, 10:57 AM
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Re: Location of pcv valve?

Update:

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.
Attached Images
File Type: jpg 100_2757.jpg (505.5 KB, 138 views)
File Type: jpg 100_2759.jpg (519.7 KB, 159 views)
File Type: jpg 100_2760.jpg (508.7 KB, 139 views)
File Type: jpg 100_2764.jpg (505.4 KB, 148 views)
File Type: jpg 100_2766.jpg (509.1 KB, 132 views)
File Type: jpg 100_2767.jpg (495.8 KB, 132 views)
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Old 08-30-2011, 11:04 AM
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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?
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Old 04-21-2012, 02:05 PM
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Re: Location of pcv valve?

Wierd, I have a 3.7 too and its not there.
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