well i finally replaced the thermostat after being bad for the two years i was in Ohio so i fixed the warm up time from 40min of power driving to 3min easing up the driveway

now i realized that my blower now works intermintally when i get home i'll check the grounds
some times the fan speed switch works and some times it dosn't and when on full blast is now comparable to lowest setting when operating correct
- leading me to think a bad controll unit 140.00$
-my resistor pack and motor connections are good

Now i have not seen anny controls at junk yard that the switch motion wasn't broken other than the auto control type

--- can i swithc to auto controlls?

Depending on if your car currently has a manual or electric blend door actuator you could conceivably retrofit the manual climate control unit with rotary knobs that Ford used in tons of its cars throughout the 1990s.

Your best choice would likely be a unit sourced from a '95 or newer CV/GM. Although a '92+ Taurus, Ranger, I think even a Thunderbird unit could be used in a pinch. All you really need to watch out for is that the vacuum mode selector switch which screws into the back of the unit probably needs to be sourced from a mid '90s Crown Vic given that the only Fords which use a Panther-style vacuum distribution setup are Panthers.

Speaking of which, I retrofitted a rotary knob manual CC unit into the '94 Crown Vic which came stock with the old-sk00l slider knob unit that later box bodies were equipped with.

my temp door is a manual, so i'll see about pulling the dash at the junk yard for an entire duck

yeah that could work if i had a motorized blend door, but it's just a blower motor,

it just seems like 3 years ago i was doing 50mph 4windows down and heat blasting in the winter sweating my but off

and i was thinking of an auto temp system but to fix the broken temp slider and ease user fatigue i could switch to a electornic manual setup (i'm not shure if the option on our cars was this auto temp)

I just did some research and it seems that '94-04 Mustangs use Ford's rotary knob climate control unit with a cable operated temperature control to work a manual blend door actuator so this could probably work with your car.

In any case sticking with manual climate control will be far easier than trying to retrofit automatic climate control which IIRC requires an electric blend door actuator and a whole mess of extra wiring and parts.

Just for grins, you might want to check out this old thread for a bit more info on one of the ways to go about a climate control unit retrofit.

Disregard the bits about needing to have an electric blend door actuator because that wouldn't apply in your case but do note that in that thread there is a mention of '92 aeros having manual blend door actuation and, truth be told, '92-94 aeros are somewhat old-sk00l compared to '95+ Panthers when it comes to dash electronics so this all could work out in your favor.

Epi helped me convert my old car from AUTO to Manual and things went really wrong. The Auto system has 4 additional vacuum lines (no electronics in the 87 model year) and the vacuum hose colors and functions do not match up! You can't plug blue into blue and hope you'll have floor heat still.

Long story short, avoid if you can, unless you do some significant homework with the wiring diagrams.

Wire: http://www.supermotors.net/registry/1538/56458

Vacuum: http://www.supermotors.net/registry/1538/56459

HVAC: http://www.supermotors.net/registry/1538/56465

~Adam

yep thanks

i didnt think that diffrent model/ years for these controls would be a direct color match.

And you all know this isn't the first time i've mixed together two cars

but real quick before i ent this thread
did the 1990 come with a automatic blend door in wich would change automatically for changing outside temps to keep the inside temp the same, or just an electronic still position blend door

The last time I was looking for parts for the '94 Vic in the boneyard I came across a '91 box Grand Marquis with factory automatic climate control and it did have an electric blend door actuator. Its system looked just like what you'd find in a '92-94 aero.

In any case the blend door--regardless how it's actuated--is ultimately what controls the HVAC air temperature since the engine's coolant is always flowing through the heater core.

Mustang hvac vacuum diagram to go with the above control. Unknown year. And an electrical diagram to compare to the cv/gm's.

Giving it a quick glance, the mustang control will not work in the cv/gm. Mustang uses a different arrangement to split the output (ie: defrost/floor vs defrost/panel).

Alex.

That's why you want to unscrew the vacuum mode selector switch from the back of Mustang's control unit which is color coded red and screw in the vacuum mode selector switch from a '95+ Panther which is color coded blue.

IOW Ford color codes the plastic housings of the vacuum mode selector switches by vehicle platform and said switches are interchangeable.

Sweet. Now who's got the vacuum diagram for a '95?

Alex.

ok guys i installed the new blower motor and she dont blow as hard as she used to, think i may of cracked the case pretty bad when i replaced the heater core the other winter in the 10deg tempuratures so.

plan is to go to the u pick u pull junkyard and offer 200 or 300$ for a complete interior seats and all+ aplicable AC parts, i'll get to it near spring still have it gutted for my friend to re paint it all

Alex - you own a '95?

No. But if I am going to utilize a part from a '95, I want to see the diagram for that part. I've been tossing around the idea of going to the rotary controls for a while now, just never could locate anything useful.

Alex.