renix radiator upgrade standard shift
CF Veteran
Joined: Dec 2010
Posts: 2,366
Likes: 0
From: Spanish Fork, Utah
Year: 1989
Model: Cherokee
Engine: Renix 4.0L
Originally Posted by freegdr
i eliminated the heater control valve plumed straight to core if you core leake just loop the hoses to each other no issue by passing valve
Thread Starter
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
CF Veteran
Joined: Dec 2010
Posts: 2,366
Likes: 0
From: Spanish Fork, Utah
Year: 1989
Model: Cherokee
Engine: Renix 4.0L
Originally Posted by freegdr
yep theres two different size tube cant screw up
Thread Starter
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
CF Veteran
Joined: Dec 2010
Posts: 2,366
Likes: 0
From: Spanish Fork, Utah
Year: 1989
Model: Cherokee
Engine: Renix 4.0L
So I'm confused, there's the little T splitter with the little valve thing in it. I just do away with that and hook the hose from the heater core to the engine hose? Do you have a picture? I just broke my damn splitter just now and I'm sick of it, I'm done messin with it!
Thread Starter
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
its the heater control valve get rid of it and plug the vacuum line to it,new heater hoses from motor to heater core
Last edited by freegdr; Jun 26, 2011 at 04:52 PM.
CF Veteran
Joined: Dec 2010
Posts: 2,366
Likes: 0
From: Spanish Fork, Utah
Year: 1989
Model: Cherokee
Engine: Renix 4.0L
Originally Posted by freegdr
its the heater control valve get rid of it and plug the vacuum line to it,new heater hoses from motor to heater core
Thread Starter
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
CF Veteran
Joined: Dec 2010
Posts: 2,366
Likes: 0
From: Spanish Fork, Utah
Year: 1989
Model: Cherokee
Engine: Renix 4.0L
Originally Posted by freegdr
cap it plug it just stop the vacuum from coming out the end thats all
CF Veteran




Joined: Dec 2008
Posts: 1,228
Likes: 30
From: Penns Grove, NJ
Year: 1995
Model: Cherokee (XJ)
Engine: 2.5 4 cyl
I am about to order the inline filler from Jegs .... What PSI radiator cap works for us (1990)?
And just to make sure, because my rig is not here with me now, what is the size of the upper rad tube?
And just to make sure, because my rig is not here with me now, what is the size of the upper rad tube?
CF Veteran
Joined: Dec 2010
Posts: 2,366
Likes: 0
From: Spanish Fork, Utah
Year: 1989
Model: Cherokee
Engine: Renix 4.0L
Originally Posted by DJKnightmare
I am about to order the inline filler from Jegs .... What PSI radiator cap works for us (1990)?
And just to make sure, because my rig is not here with me now, what is the size of the upper rad tube?
And just to make sure, because my rig is not here with me now, what is the size of the upper rad tube?
Thread Starter
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
just get a radiator cap for a 91 youll be fine what ever factory calls for


