A/C stuck in defrost
 

So today I left my truck running at work to cool off when I started it it ran fine in the dash vents. After I got back in it was coming out the defrost. I turned the ac off and back on and it came out the Dash vents then went straight to defrost... :argh: I checked the vac lines from the pump to where it goes in to the cab and it all looked good. Im not sure whats wrong but its got me pissed its hot out there! there is one other vac line thats going to the front drivers side but I dont know what that is. Any help would be great. Also is there any way to tell if my vac pump it dead? other than the ac. Thanks so much:c:

Check the vacuum servo and make sure it's operating the damper,if the servo is shifting then the damper has came loose or it's broken internally......not a pleasant fix!

I smell a complete dash removal! Sorry Bacon...:argh:

A/C stuck in defrost
 

Also I found out my cruise control is not working anymore too. Both of these items worked as of 4:30 yesterday.....

I have the same problem with the AC:argh:

both of those are vacuum controlled so my guess is check your vacuum lines first:tu:

I am gonna sound really stupid but wht does a vacuum line look like and where is it located?

A/C stuck in defrost
 

I'm going to check all my connections and hoses tonight it's kinda pissing me off >:( if it's the pump I'll prob find a small dc powered pump to run when the key is on instead of pulling the power steering and vac pump off

A/C stuck in defrost
 

So I'm going to check all my lines tomorrow after work. I looked online and a new pump is 400+ bucks!!!!! I looked online and I can get a 2003-2006 vac pump that is elec for 150... If I wire it to come on with the motor will that work? It says it will hold 17psi and turn on at 11psi. That sound like a good idea?

A/C stuck in defrost
 

Bump

The Vac pump is rebuiltable. 359.00 here GOULD GEAR & ELECTRIC

uggggg money!!!!!!
:scare2::argh::ouch:

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I take it ill have to take the front cover off to pop the gear to get the whole thing off...:s: Im likeing the idea of rigging a DC powered one more and more....

I dont think you need to pop front cover there is a cross drive that just pulls apart and then both p/s pump and vac. pump come out. Have you just pulled a line off with truck running to see if vac. is there. My main line comes up from pump to just beside blue pressue cylinder of hydroboost. It has a check valve in it. Is it a 4x4? If so make sure that lines going to front end and t/case are not off. Hope this helps pt

A/C stuck in defrost
 

No its a 2x4 I'm going to take each hose off and check them for cracks. Then check the pump... This all happened after I took the truck to get a oil change at the local shop

A/C stuck in defrost
 

On a 2 wheel drive the only things controlled are the AC vents and cruise control right? Because that's all I can see in the line comes from the pump to a t them one line to the back pass side by the trans fluid dipstick and then a line to the front drivers side connects to something under the battery

Take pictures please! Lol

Sorry I'm not too sure on a 2wd. I would check at the pump main hose first and if there is nothing there while running then the pump has gone south . If there is vac. there...then check all the rest of the hoses. On mine the line going under batt. is to the vac. canister and yes the other one goes through firewall by a/c lines to controls pt

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If I knew how to post from my black berry I would do it. lol pt

A/C stuck in defrost
 

Heres pics I did on my iPhone but I got to post one at a time... Here's the vac pump. The power steering pump is right behind it in green. Then you can see the main hose from the pump

A/C stuck in defrost
 

A/C stuck in defrost
 

This is where the main line hits the T then the smaller one goes to the vac can under the batteryhttp://tapatalk.com/mu/18757c07-c568-9a4f.jpg

A/C stuck in defrost
 

Heres the vac can under the battery http://tapatalk.com/mu/18757c07-c58c-a412.jpg

A/C stuck in defrost
 

Heres the line full of T's over to the AC linehttp://tapatalk.com/mu/18757c07-c5c5-1806.jpg

A/C stuck in defrost
 

And this is the AC line http://tapatalk.com/mu/18757c07-c5e1-5d13.jpg

Yeh, on your first pic, pull the hose off the brass block and check for vac. (with eng. running) there, or just under your check valve in pic #2 middle arrow. It needs to be more than just pulsing your finger tip. It should stick you finger to it. I just ran out and tried mine and it pulls tight to my finger. Another option for electric pump is a ford super duty vac pump from autowreckers . pt

Badass man Thx!:tu:

Mine done that too. i just unhooked it from the vac thing that opens and closes the lever to switch it from defrost to dash and zip tied the lever in the down position for a temp fix till i have time to troubleshoot it so it would blow out the dash

I just had the same problem there is a vac t-line that came up done up on the fire wall where all the wire bundles are. basically centered with steering wheel I accidently pulled it loose wiring my air dog same problem just defrost and no cruise control I will take a pic and post tomorrow .

well Im going to get out there today in a few hours after this :jump: RAIN :jump: blows through so it wont be so hot! And check all the hoses I can

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So turnes out the line from the T to cruise control was cut... also the main line broke then I touched it....any idea where I can get new lines?

You can pick up the vac line at any parts store. I know pep boys has different size line by the foot.

My cruise still works, but not my AC and i cant find and cut/broken line anywhere... Countryboy do you have a pic of that lever?

not at the moment. ill get one its a white plastic lever beside the gas pedal and up behind the dash its the only one i saw on that side

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how do i up load pictures

here is the pic wow thats really small how can i enlarge it

Ok went to auto zone got all the vac line they had ( had to go to advanced auto for more) and replaced the main vac line, the check valve, vac line to cruise control, and line to the ac line on the firewall... jumped in the truck and crossed my fingers and she started blowing out the dash :jump::jump::jump::jump::jump: Thanks alot guys for the help:c:

Sweet! Hope i have the same luck:tu:

Rigged the white lever:rocking: Haha