A/C crazy

[lockmup]

97 ranger a/c checked yesterday freon added,now works great if on max
ac if you chane it to regular ac you get nothing but heat , I figure it is in control but what?and is there any way of checking it... thanks for any help

 

[MAKG]

Blown vacuum line.

 

[lockmup]

Blown vacuum line.

any ideas as to where to start looking

 

[Sasquatch_Ryda]

Listen under the dash for a hissing noise with the truck idling

 

[Jeff673]

Try this.

http://www.blenddoorfix.netfirms.com/

 

[TrucksGetDirty]

Listen under the dash for a hissing noise with the truck idling

Oh my! I figured out what's wrong with my A/C!

Getting this fixed ASAP.