Re: 1990 wrangler 4 wheel drive vacuum line?
 

Jeremy wrote:
> I have a 1990 Jeep Wrangler who's vacuum lines have been disconnected.
> I need help sorting them out as to what goes where. I think I have most
> of them connected properly but my 4 wheel drive light is on, but when
> you ramp up the rpms it goes out. I just need some help getting the
> lines in their proper places so the Wrangler idles rather than
> stalling.
>
> Thanks for the help
> Jeremy


Sorry I forgot to mention its a 6cyl. 4.2L. Automatic.

Re: 1990 wrangler 4 wheel drive vacuum line?
 

Jeremy wrote:
> I have a 1990 Jeep Wrangler who's vacuum lines have been disconnected.
> I need help sorting them out as to what goes where. I think I have most
> of them connected properly but my 4 wheel drive light is on, but when
> you ramp up the rpms it goes out. I just need some help getting the
> lines in their proper places so the Wrangler idles rather than
> stalling.
>
> Thanks for the help
> Jeremy


Sorry I forgot to mention its a 6cyl. 4.2L. Automatic.

Re: 1990 wrangler 4 wheel drive vacuum line?
 

Jeremy wrote:
> I have a 1990 Jeep Wrangler who's vacuum lines have been disconnected.
> I need help sorting them out as to what goes where. I think I have most
> of them connected properly but my 4 wheel drive light is on, but when
> you ramp up the rpms it goes out. I just need some help getting the
> lines in their proper places so the Wrangler idles rather than
> stalling.
>
> Thanks for the help
> Jeremy


Sorry I forgot to mention its a 6cyl. 4.2L. Automatic.

Re: 1990 wrangler 4 wheel drive vacuum line?
 

Jeremy wrote:
>
> Jeremy wrote:
> > I have a 1990 Jeep Wrangler who's vacuum lines have been disconnected.
> > I need help sorting them out as to what goes where. I think I have most
> > of them connected properly but my 4 wheel drive light is on, but when
> > you ramp up the rpms it goes out. I just need some help getting the
> > lines in their proper places so the Wrangler idles rather than
> > stalling.
> >
> > Thanks for the help
> > Jeremy
>
> Sorry I forgot to mention its a 6cyl. 4.2L. Automatic.

Here is a good site for most things to do with the 4.2.

http://home.sprynet.com/~dale02/list.htm

Is the emissions computer still in the loop? That can mean lots of the
vacuum line stuff is not needed.

The bad idle can be unrelated to the vacuum lines. That carb is
notorious for getting plugged up idle tubes. Here is a site on the test
for this and the fix:
http://www.off-road.com/jeep/tech/engine/carter.html

If you have oil blowing into the air filter, that can be another reason
for bad idle with an easy fix.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Re: 1990 wrangler 4 wheel drive vacuum line?
 

Jeremy wrote:
>
> Jeremy wrote:
> > I have a 1990 Jeep Wrangler who's vacuum lines have been disconnected.
> > I need help sorting them out as to what goes where. I think I have most
> > of them connected properly but my 4 wheel drive light is on, but when
> > you ramp up the rpms it goes out. I just need some help getting the
> > lines in their proper places so the Wrangler idles rather than
> > stalling.
> >
> > Thanks for the help
> > Jeremy
>
> Sorry I forgot to mention its a 6cyl. 4.2L. Automatic.

Here is a good site for most things to do with the 4.2.

http://home.sprynet.com/~dale02/list.htm

Is the emissions computer still in the loop? That can mean lots of the
vacuum line stuff is not needed.

The bad idle can be unrelated to the vacuum lines. That carb is
notorious for getting plugged up idle tubes. Here is a site on the test
for this and the fix:
http://www.off-road.com/jeep/tech/engine/carter.html

If you have oil blowing into the air filter, that can be another reason
for bad idle with an easy fix.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Re: 1990 wrangler 4 wheel drive vacuum line?
 

Jeremy wrote:
>
> Jeremy wrote:
> > I have a 1990 Jeep Wrangler who's vacuum lines have been disconnected.
> > I need help sorting them out as to what goes where. I think I have most
> > of them connected properly but my 4 wheel drive light is on, but when
> > you ramp up the rpms it goes out. I just need some help getting the
> > lines in their proper places so the Wrangler idles rather than
> > stalling.
> >
> > Thanks for the help
> > Jeremy
>
> Sorry I forgot to mention its a 6cyl. 4.2L. Automatic.

Here is a good site for most things to do with the 4.2.

http://home.sprynet.com/~dale02/list.htm

Is the emissions computer still in the loop? That can mean lots of the
vacuum line stuff is not needed.

The bad idle can be unrelated to the vacuum lines. That carb is
notorious for getting plugged up idle tubes. Here is a site on the test
for this and the fix:
http://www.off-road.com/jeep/tech/engine/carter.html

If you have oil blowing into the air filter, that can be another reason
for bad idle with an easy fix.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Re: 1990 wrangler 4 wheel drive vacuum line?
 

Thanks for the site. I looked up the vacuum lines and to the best of my
knowledge hooked them up. Only problem is my set up varies from that on
the site and Im not sure of I hooked up the lines correctly to the
carb. That is the only problem I am having know is the lines from/to
the car. IE the decel valve and I am pretty sure I do not have a pulse
air valve on the drives side. If anyone can help that would be awesome

Thanks Jeremy

Re: 1990 wrangler 4 wheel drive vacuum line?
 

Thanks for the site. I looked up the vacuum lines and to the best of my
knowledge hooked them up. Only problem is my set up varies from that on
the site and Im not sure of I hooked up the lines correctly to the
carb. That is the only problem I am having know is the lines from/to
the car. IE the decel valve and I am pretty sure I do not have a pulse
air valve on the drives side. If anyone can help that would be awesome

Thanks Jeremy

Re: 1990 wrangler 4 wheel drive vacuum line?
 

Thanks for the site. I looked up the vacuum lines and to the best of my
knowledge hooked them up. Only problem is my set up varies from that on
the site and Im not sure of I hooked up the lines correctly to the
carb. That is the only problem I am having know is the lines from/to
the car. IE the decel valve and I am pretty sure I do not have a pulse
air valve on the drives side. If anyone can help that would be awesome

Thanks Jeremy

Re: 1990 wrangler 4 wheel drive vacuum line?
 

Thanks for the site. I looked up the vacuum lines and to the best of my

knowledge hooked them up. Only problem is my set up varies from that on

the site and Im not sure of I hooked up the lines correctly to the
carb. That is the only problem I am having now is the lines from/to
the carb. IE the decel valve and I am pretty sure I do not have a pulse

air valve on the drives side. If anyone can help that would be awesome

Thanks Jeremy