HVAC Systems Compatability Through The Years

Reply Subscribe

Thread Tools

Search this Thread

Apr 27, 2018 | 10:37 PM

DustyWagoneer

Thread Starter

Senior Member

Joined: Mar 2018

Posts: 660

Likes: 300

From: Under the Jeep

Year: 1993

Model: Cherokee (XJ)

Engine: 2.9 Stroker 4cyl

HVAC Systems Compatability Through The Years

My HVAC housing is toast thanks to the POs.
So I am just wondering what years will actually work in my 1993?
A 91 was just dropped at a picapart, and if it will work maybe I should go pull it in the morning?

EDIT:
BTW I will be going to 134a if that makes any difference? (maybe a 96????)

Last edited by DustyWagoneer; Apr 27, 2018 at 11:20 PM.

Apr 28, 2018 | 08:17 AM

cruiser54

::CF Moderator::

Joined: Aug 2011

Posts: 43,971

Likes: 1,577

From: Prescott, Az

Year: 1990

Model: Cherokee (XJ)

Engine: 4.0

Should be fine 84 to 96.

Apr 30, 2018 | 10:59 PM

DustyWagoneer

Thread Starter

Senior Member

Joined: Mar 2018

Posts: 660

Likes: 300

From: Under the Jeep

Year: 1993

Model: Cherokee (XJ)

Engine: 2.9 Stroker 4cyl

So we have been spending quality time in the many Pick-a-parts out here in the Inland Empire looking for the right HVAC unit for my Jeep.
Today we found a 1990 and the Temp. probe is not like the ones they started using in 1991.

We found a 1991 Cherokee today, and sure enough it has the "Rosebud Connector on it, and the right probe that gets inserted into the AC Evaporator.
SO basically the 1991-1996 all used the same vacuum motors, and temp probe.
One note I noticed as well, is the 1991 heater control vacuum connector is different compared to the 1993.

Hope this helps someone later down the road?