need wiring diagram
Thread Starter
Newbie
Joined: Jul 2013
Posts: 17
Likes: 0
From: Bend Oregon
Year: 1990
Model: Cherokee
Engine: 4.0 Renix
I need a wiring diagram from the fuse box forward.
In the picture you can see where my test light is pointing to.
I found this to be a constant 12v and when I used to wire in a auxiliary cooling fan I popped something and the pop seemed like it was coming from under the dash.
Now the truck runs extremely rough and my spark plugs are fouling out in black soot.
In the picture you can see where my test light is pointing to.
I found this to be a constant 12v and when I used to wire in a auxiliary cooling fan I popped something and the pop seemed like it was coming from under the dash.
Now the truck runs extremely rough and my spark plugs are fouling out in black soot.
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: 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: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
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Thread Starter
Newbie
Joined: Jul 2013
Posts: 17
Likes: 0
From: Bend Oregon
Year: 1990
Model: Cherokee
Engine: 4.0 Renix
Im updating this as I hate when people ask questions about issues and once fixed they never post up the "fix".
So today I replaced the temperature sending unit for the dash gauge and while I was in there I saw I had a disconnected vacuum line . traced it and found it plugged into the ignition module. plugged it in and walla fixed
So today I replaced the temperature sending unit for the dash gauge and while I was in there I saw I had a disconnected vacuum line . traced it and found it plugged into the ignition module. plugged it in and walla fixed
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
Im updating this as I hate when people ask questions about issues and once fixed they never post up the "fix".
So today I replaced the temperature sending unit for the dash gauge and while I was in there I saw I had a disconnected vacuum line . traced it and found it plugged into the ignition module. plugged it in and walla fixed
So today I replaced the temperature sending unit for the dash gauge and while I was in there I saw I had a disconnected vacuum line . traced it and found it plugged into the ignition module. plugged it in and walla fixed

Maybe map sensor on firewall.


