Question about PVC system on 1990
09-07-2010, 10:13 PM
#1
Member
Thread Starter
Join Date: Jul 2010
Posts: 208
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Question about PVC system on 1990
Hey everybody! I finally got a nice Jeep. Its another members car. Its a very nice 90 2rd. Its in a great shape but has a few little issue.
the whole PVC system is messed up.
here is a picture of whats going on.
I need to figure out how its all set up and what it should look like.
the whole PVC system is messed up.
here is a picture of whats going on.
I need to figure out how its all set up and what it should look like.
09-07-2010, 10:18 PM
#2
CF Veteran
Join Date: Apr 2008
Location: Northern Illinois
Posts: 2,237
Likes: 0
Received 3 Likes
on
3 Posts
Year: 90
Model: Cherokee
Engine: 4.0
Its a CCV system not a PCV system.. There is no traditional PCV valve like you are looking for.
The only thing missing is a tube from the valve cover where the breather is at. The tube runs to the place on the right where all the vacuum lines go together. The 1/2 tube that comes from the airbox joins the one from the valve cover
The only thing missing is a tube from the valve cover where the breather is at. The tube runs to the place on the right where all the vacuum lines go together. The 1/2 tube that comes from the airbox joins the one from the valve cover
09-07-2010, 10:34 PM
#3
Member
Thread Starter
Join Date: Jul 2010
Posts: 208
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
I see. What's with the vacuum lines? On my 94, the hose from the valve cover just goes right to the intake. But that does not seem to be the same on the 90. Do you have a picture of how it should be all set up?
09-07-2010, 11:12 PM
#4
Senior Member
Join Date: Dec 2008
Location: Norco CA.
Posts: 510
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1991 XJ SPORT 2 DR.
Model: Cherokee
Engine: 4.0 600 HP
heres a pic it goes right to the back of the air box
Last edited by mark's91-XJ; 09-07-2010 at 11:20 PM.
Trending Topics
04-04-2012, 09:00 PM
#12
Newbie
Join Date: Apr 2012
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
I want to know why in the Rushin Picture, the pcv hose looks different than this diagram. My cherokee have an air suction in the same place or near pcv valve and i dont know where the line must go... .
Last edited by jleal666; 04-04-2012 at 09:05 PM. Reason: Add pic
04-04-2012, 10:02 PM
#13
CF Veteran
Join Date: Nov 2011
Location: phoenix az
Posts: 1,290
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1989
Model: Cherokee
Engine: 4.0l 6 cylinder
it looks like everything is fine if u hook up the valve cover breather to the airbox
u have nothing to worry about
u have nothing to worry about
04-04-2012, 11:51 PM
#14
CF Veteran
This just made me realize my PCV system is all screwed up (stupid PO stuff) I'm gonna snap a pic tomorrow and show you guys if I cant figure it out myself lol.
04-05-2012, 06:36 AM
#15
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes
on
1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
I've got the vac diagram but I can't post photos. Somebody PM me and I'll send it to you.