help!! ac proploms

[BIG GREEN FORD]

My ac only blows from deforest and I thought it was the controls so I took the vacuum lines of and lost all pressure and put the other Control unit is still only blows from defrost help plz

 

[stamp11127]

Going to assume you have the EATC. Have you checked to make sure you have vacuum on the black hose going to the controls?

What is "all breacher"?

 

[spud]

I am not sure what all this little flapper door does that I had to have replaced to get my AC to work along with some sort of motor and while the guy had the dash totally tore out I had him do the heater core too so nothing else was left for me to have to pay that labor fee again, but maybe that flapper door is your issue too?

 

[BIG GREEN FORD]

Going to assume you have the EATC. Have you checked to make sure you have vacuum on the black hose going to the controls?

What is "all breacher"?

Pressure sorry lol. It works some times but not all the time??

 

[BIG GREEN FORD]

I am not sure what all this little flapper door does that I had to have replaced to get my AC to work along with some sort of motor and while the guy had the dash totally tore out I had him do the heater core too so nothing else was left for me to have to pay that labor fee again, but maybe that flapper door is your issue too?

Did yours work sometimes?

 

[BIG GREEN FORD]

I am not sure what all this little flapper door does that I had to have replaced to get my AC to work along with some sort of motor and while the guy had the dash totally tore out I had him do the heater core too so nothing else was left for me to have to pay that labor fee again, but maybe that flapper door is your issue too?

Did yours work sometimes?

 

[stamp11127]

Spud had the blend door replaced. It operates by an electronic means. The mode control is vacuum operated so you are losing vacuum somewhere. Most vac issues are in the engine compartment. Check the hose under the battery tray.

 

[BIG GREEN FORD]

Spud had the blend door replaced. It operates by an electronic means. The mode control is vacuum operated so you are losing vacuum somewhere. Most vac issues are in the engine compartment. Check the hose under the battery tray.

I only checked the one that cones out of the fire wall into the T shape plastic. There's another weak spot under the battery as well? Could it be from bouncing off road? Or just from being old? Thanks for the quick reply.

 

[stamp11127]

I'm going by memory and haven't had my morning "trucker" coffee so it wouldn't hurt to do a search to verify. I think there is a vac line and reservoir in that area that have failed due to age.

 

[BIG GREEN FORD]

Will check when I get home at work. I hope its that. Would that make it not work sometimes. It doesn't work then it switches back and forth

 

[stamp11127]

What do you mean by it doesn't work? The climate control system is a grouping of multiple systems working in unison. One system can fail and not immediately have an impact on the other systems. A better description of what isn't working would be helpful.

 

[BIG GREEN FORD]

I put the control on ac/max ac and it comes out only through the vents that go to the front windshield. But it also changes to the normal vents then back to the windshield it changes on its own. And also when i shout the car of and turn the controls I don't here the valve closing or opening

 

[stamp11127]

That is a problem with the mode and vac related.

Sent you a pm.

 

[z168]

our vent controls are run by cable from the knob right? as opposed to electronic controlled

 

[stamp11127]

Manual and EATC control motors are vacuum operated. The blend door is electrical. The good ol days died long ago.