oem valve cover elbow
Thread Starter
MJ>XJ
Joined: Mar 2009
Posts: 17,836
Likes: 7
From: Griffin, G.A.
Year: 1990
Model: Comanche
Engine: 4.0 I6
oem valve cover elbow
Lets see some ideas to fix this up... Maybe other car parts used or something... Mines busted... They all bust... Junkyards are all no good and i cant find a new oem one... Mines the renix version which is the worst at breaking...
Oh and id like to see them done right... Not just rtv Squirted all over the cover...
Oh and id like to see them done right... Not just rtv Squirted all over the cover...
CF Veteran
Joined: Oct 2011
Posts: 4,440
Likes: 3
From: Seal Beach, CA
Year: 1996
Model: Cherokee
Engine: 4.0 HO Straight Six
Senior Member
Joined: Aug 2011
Posts: 760
Likes: 6
From: Landers, CA
Year: Several
Model: Cherokee
Engine: 4.0
The front one is just an elbow.
But the rear one has a small orifice - it has to be there to limit the amount of air sucked from the crankcase to the manifold. Without the small hole, you'll get a rough idle. The hole is calibrated.
Dealer's have both of them for cheap.
But the rear one has a small orifice - it has to be there to limit the amount of air sucked from the crankcase to the manifold. Without the small hole, you'll get a rough idle. The hole is calibrated.
Dealer's have both of them for cheap.
Thread Starter
MJ>XJ
Joined: Mar 2009
Posts: 17,836
Likes: 7
From: Griffin, G.A.
Year: 1990
Model: Comanche
Engine: 4.0 I6
wish mine was as easy as this... renix ones are harder... pain to even get the old one out..
CF Veteran
Joined: May 2009
Posts: 10,424
Likes: 61
Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
I put a new front one on mine.
I got it at Autozone, in the Help section. Its a GM "PCV elbow".
Should be this:
Make : GM 1995-85 OE # : 14078872 Brand : Dorman - HELP! - Carded
I got it at Autozone, in the Help section. Its a GM "PCV elbow".
Should be this:
Make : GM 1995-85 OE # : 14078872 Brand : Dorman - HELP! - Carded
Last edited by 89Laredo; Dec 2, 2011 at 05:19 PM.
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Thread Starter
MJ>XJ
Joined: Mar 2009
Posts: 17,836
Likes: 7
From: Griffin, G.A.
Year: 1990
Model: Comanche
Engine: 4.0 I6
Thanks 89laredo... Sorry should know ur real name by now... Lol
And ive never heard in all my years of a vacuum harness... Only Vacuum lines... Vacuum accumulator... Vacuum cleaner... Lol... Im guessing your talking about the vacuum system as a whole?
And ive never heard in all my years of a vacuum harness... Only Vacuum lines... Vacuum accumulator... Vacuum cleaner... Lol... Im guessing your talking about the vacuum system as a whole?
CF Veteran
Joined: Oct 2011
Posts: 4,440
Likes: 3
From: Seal Beach, CA
Year: 1996
Model: Cherokee
Engine: 4.0 HO Straight Six
Originally Posted by 89Laredo
I put a new front one on mine.
I got it at Autozone, in the Help section. Its a GM "PCV elbow".
Should be this:
Make : GM 1995-85 OE # : 14078872 Brand : Dorman - HELP! - Carded
I got it at Autozone, in the Help section. Its a GM "PCV elbow".
Should be this:
Make : GM 1995-85 OE # : 14078872 Brand : Dorman - HELP! - Carded
Senior Member
Joined: Aug 2011
Posts: 760
Likes: 6
From: Landers, CA
Year: Several
Model: Cherokee
Engine: 4.0
Renix, TJ or otherwise. They are all the same.
When you try to take them out you break them.
Replace the grommet too while you are at it.
Pry it out - when it breaks off, run a big screw in the hole, then pry it out with a crowbar.
The rear one has the small orifice - it's not a generic elbow. It is critical.
You won't need the entire vacuum assembly - if a hose is broken they are easy to fix.
The small hard plastic lines - simply slip a small rubber vacuum hose over the break.
Parts houses have the plastic lines and the rubber ends too. For cheap.
When you try to take them out you break them.
Replace the grommet too while you are at it.
Pry it out - when it breaks off, run a big screw in the hole, then pry it out with a crowbar.
The rear one has the small orifice - it's not a generic elbow. It is critical.
You won't need the entire vacuum assembly - if a hose is broken they are easy to fix.
The small hard plastic lines - simply slip a small rubber vacuum hose over the break.
Parts houses have the plastic lines and the rubber ends too. For cheap.
Thread Starter
MJ>XJ
Joined: Mar 2009
Posts: 17,836
Likes: 7
From: Griffin, G.A.
Year: 1990
Model: Comanche
Engine: 4.0 I6
The forward holes may all be the same and this elbow above may can be made to work with all of the valve covers but the elbow is far from the same on all the models... When i was at the jyvlast buyong a door latch i looked to see if i coyld easily get one... They all were broke or renix models which are harder material and designed differently... Got around 30 jeeps total in the yard... Still came home empty handed for these... Ill try the AZ stuff said above...