The only difference is the inner diameter. You do not want to put the rear elbow with the teeny tiny hole in the front fitting lol. The rear elbow looks just like the front except with a restrictor jammed into it.

 

I got ya, that's what I was saying about the inner diameter.
The replacements I got from Napa must not be factory then, my front "elbow" is a solid unit with a huge inner diameter.
Here's a pic...

 

That's what I said lol. Go back and rear more slowly...

The elbows changed several times over the course of the 4.0L.

 

Who's on first?

 

Lol, thanks. Just 're read it! I graduated high school in Texas man, we're not very good about the edjumucation thing yet...

 

First base, some designer drug I assume probably exists, tonight on CNN?

lol in Ontario we can't spell "read"

 

Yeah I mean I never heard of anyone spelling "read" "rear" before, but I don't get that far north either

 

What would work as a replacement carpet padding?

 

Hello everybody,

I have a 1999 jeep Cherokee 4.0 with 4 wheel drive. Recently I noticed a vibration that happens when I drive on the highway starting at about 70mph. The car has a 3in lift in both the front and the rear but it also has horrible leaf spring which have sagged down to stock height. We have gone through and checked the pinions, wheel hubs, and for any movement, but there was no movement and it was all tight. We proceeded to pull the front drive shaft and start checking u-joint rotation and there was nothing suspicious, same with the yolk. We kept the shaft out and went for a test drive to find there was no more vibration with the drive shaft out. Luckily I have some contacts with extra drive shafts so we swapped one of theirs in and test drove. The vibration was still there and just as loud as it was with my original shaft.

Tonight we are gonna pull the diff cover to check the gears for any damage. If that all looks good then we have no idea where to look next so if anybody has any suggestions as to what to look for what please tell. Any help is greatly appreciated. Thank you

 

Take a pic,with DS installed, of your front opinion angle and the TC output shaft leading to it. Also just have to ask, were you in 4wd when noticing vibration

 

Oof. Read 18,000 how-to change valve cover gasket threads aaaand, as anticipated, it's the allegedly easy stuff that is tripping me up. PROB 1 -- I'm having trouble disconnecting the CCV (got front one-whatever is is- off readily). On CCV the rubber connectors will move around for me but I can't get an actual disconnect. Tips? Will try to proceed as far as possible and hope I can eventually get it off. THANKS in advance

 

...go ahead and add the ground too. I understand it just pulls off? Not mine. Go ahead and start the betting on total start to finish time haha. Hint: I'm 42 minutes into it!

 

How are you trying to disassemble the CCV system? Hope you aren't trying to yank the elbows out. Pull the rubber fittings off the elbows or tubes.

As for the ground at the back of the head it's a larger nut on an annoying angle on a head stud. Doesn't just pull off lol.

 

Salad - the elbows are rubber, yes? I've been trying to pull everything. Should I be trying at the valve cover end or the throttle end?

 

No the elbows are a hard plastic that becomes brittle over time.

Unless you want to replace the elbows too (a good idea actually) yank on the rubber bits like in this photo: