Have you checked the hose on the other end of the plastic line to see if it's brittle too? Don't know the hose size but the reason I ask is the Mopar plastic line w/hoses at both ends is only $13.13 plus shipping at Rockauto. Likely less than $20 total and below is a photo of it to check to see if it's the same.

http://www.rockauto.com/en/moreinfo.php?pk=5428092&cc=1386794&jsn=379&jsn=379

I entered in your 02 4.7 and it says it's for the engine VIN "J" which would be the 4.7 HO (EVC). Wouldn't doubt it also fits the "N" or non-HO 4.7 (EVA).

Or just shove it on, electrical tape it up, drive to the nearest parts store, pull the hose off, and have them match it up. Just don't break the plastic line if it's brittle too. Good luck.

 

Ya, that is the part I keep finding as well. I am wondering if they updated the hose, because it looks a little different from the one I have. To be fair, the rubber hose was fine until I started trying to take it off. I am thinking the PCV valve has never been changed, mainly because of the pain in the *** it has been trying to take this off. It needs changed though.

I am going to call the dealership today to see if they have the part. It is not at any of the auto parts stores. However, if I could just through some vacuum hose on it I will do that.

Thanks for your help!

 

Ha!. It looks like the previous owner, at some point, may have used the PCV valve hose for a I6. The picture of that looks a lot more like what is on there right now. Could be one of the reasons I cant get this thing off, probably too small of a hose diameter.

 

You're welcome and your 02 4.7 PCV is the same as my 04 4.7 which is a Mopar 53032800AA like below.

http://www.rockauto.com/en/moreinfo.php?pk=5051964&cc=1386794&jsn=381

I have a brand new PCV valve down the basement and put a caliper on it where the hose end is 9/16" OD w/o the flared ridge. I have an old piece of 1/2" ID hose I tried shoving on and it would best to heat it if you want to get it on there it fits so tight.

And speaking of heating I've read before to let your engine warm up with hood down to heat up those PCV area parts before trying to change it out. Also my parts bud at the dealer told me to use a heat gun or hair drier to heat up the area around the oil fill plastic where the PCV port is so you don't crack/damage it when twisting the PCV out to remove it. And don't believe you keep twisting it to remove and maybe something like 1/4 turn.

Not much luck finding 9/16" ID vacuum hose so you may have to go with 1/2" ID. Also modern vacuum hose isn't fuel resistant and certain engine fumes can eat it up. I'll often use fuel injector hose instead of vacuum hose but the plain fuel hose is a lot cheaper would likely work. But vacuum hose is easier to work with w/o the nylon threads embedded in the hose itself and vacuum hose stretches more. Good luck.

 

You're welcome and your 02 4.7 PCV is the same as my 04 4.7 which is a Mopar 53032800AA like below.

More Information for MOPAR 53032800AA

I have a brand new PCV valve down the basement and put a caliper on it where the hose end is 9/16" OD w/o the flared ridge. I have an old piece of 1/2" ID hose I tried shoving on and it would best to heat it if you want to get it on there it fits so tight.

And speaking of heating I've read before to let your engine warm up with hood down to heat up those PCV area parts before trying to change it out. Also my parts bud at the dealer told me to use a heat gun or hair drier to heat up the area around the oil fill plastic where the PCV port is so you don't crack/damage it when twisting the PCV out to remove it. And don't believe you keep twisting it to remove and maybe something like 1/4 turn.

Not much luck finding 9/16" ID vacuum hose so you may have to go with 1/2" ID. Also modern vacuum hose isn't fuel resistant and certain engine fumes can eat it up. I'll often use fuel injector hose instead of vacuum hose but the plain fuel hose is a lot cheaper would likely work. But vacuum hose is easier to work with w/o the nylon threads embedded in the hose itself and vacuum hose stretches more. Good luck.

My parts book shows that number as "1 53032 617AD 1 EV0 TUBE, Crankcase Vent To Intake Manifold

Well, trying to replace my PCV valve; and the hose is starting to crack as it inserts over the valve. Seems pretty brittle, so I don't want to pull it off anymore. Does anyone know what size hose the rubber is? I don't need the plastic hosing. I also can't seem to find it online. I have the 4.7 liter HO. I can't find anything in the search about this, other than for 4.0 liter engines.

If we are talking about the PCV valve on the oil filler, I used some "14.5mm ID, Nitrile Rubber Smooth Fuel Tube Petrol Diesel Oil Line Hose Pipe Tubing Breather."

I had to use a spring hose clip to get a tight grip on the plastic tube.

 

Yep, double checked the FSM for removing the 4.7 PCV from the oil filler tube. You do turn the PCV 1/4 turn counter-clockwise where the vacuum hose nipple is pointed straight down. Then pull the PCV valve straight out.

Then on installing the new one you install it with vacuum hose nipple pointed straight down then turn it 1/4 turn clock-wise and you'll hear it click in with hose nipple pointed to rear of engine. Since it has an o-ring on the part going into oil filler tube it's best to put a little lube on it. Also may good a idea to spray some rust cutter or lube on the old one in removing.

Have to install my new PCV valve too so while trying to help you I'm also helping myself! Lol.

Some info/diagrams below on the PCV valve and crankcase ventilation system.

 

Im trying yo find where it plugs into! The hose broke an i cam find the other end!

 

I think a good mod for the PCV is by using the one intended for newer 4.7's. On youtube, martinbuilt has a tutorial on this:

It seems the iteration of 4.7 on our WJ's are prone to sludge build up, and I can attest that when I ripped my engine apart, there was much sludge. Could be that the previous owner didn't take care of this vehicle, or it really is a design flaw. In either case, the logic makes sense to me (as explained in the video) and the OEM part is affordable enough at $36 (high for a PCV, but the issue it seems to solve makes it worth it to me). Furthermore, while Martin describes how to re-use existing hoses and whatnot, I opted to just buy some new rubber hose to get everything hooked up.

 

FYI - here is a link to the TSB that Martin is referring to in the above video:

https://www.dodgetalk.com/attachments/pcv-tsb-pdf.540434/

And here is @cDee63's write up on it, with pics:

PCV system mod on 4.7

I wanted to wait until I put a few miles on before I did a write up on this. I had noticed on this one and a few friends Dodges and Jeeps with the 4.7 or Hemi there was always a milky residue on the backside of the oil cap. I then came across a TSB concerning moisture freezing in the PCV system...

www.jeepforum.com