sup guys 91 crx si stock with a/c system. a/c not blowing air at all, cold or hot. compressor kicks in, clutch engages, refrigerant is fully charged, i can feel the line geting cold and hooked up a pressure gauge for psi and its good, fuses and relays are good, a/c head unit lights up, pulled the blower motor off tested with 12 volt source and its good also cleaned it, cheked for volts and resistnce in the conecction and its good to. what next? searched and everything it says to do i did. assistance and suggestions greatly appriciated

 

if that's all working, your climate control switch (1-4) is bad or the harness.

 

If the climate control switch was bad then my compressor would not kick on or light up right? Unless im wrong. Is there a way to test these both besides resistance? Thanks for the suggestions, they are greatly appriciated. keep em coming.

 

i'm looking at the circuit diagram right now. there is a green wire that comes off the 1-4 switch that tells the system to turn on...that's working. there should be 4 other wires that go to the resistor on the blower motor. your problem is the resistor or the harness that goes to it. did it work before??

 

it did it i noticed when i turned it on one afternoon coming back from work, it worked that morning. i thought about checking the resistor, is there a way to test, or take a chance replacing it? thank you for assisting

 

you're welcome!
usually when the resistor goes bad, it's just one of the speeds. you can check it with a multimeter, but i don't know the values. it looks like the blower has constant 12v (+) from a fuse (maybe #19?) and the resistor is ground (-). there is a ground that goes to the climate control switch, it may have broke, or that fuse is blown. the blower should have wires that are blu/wht (+) and blu/blk (-). check both sides, it's probably the fuse or the ground.

 

thnks i was looking for grounds cant find them, fuses are all right, isnt the resistor itself a ground? it also crossed my mind a bad fuse box its not letting it compleat the circuit but if so wouldnt the other components stop working? idk, hope not and doubt but i seen them go bad before. but ill track that ground se whats going on and check resistance on the resistor.

 

the diagram doesn't say what color, but the ground is probably a black wire going to the climate control. you can make another ground wire and connect them to be sure. i know you checked the fuses, but do you have power on that blu/wht wire??
the resistor itself is not a ground, it comes from the climate control.