91 240sx hatch ac/heat problem

[BubbaKush]

So i just got my first car. its a 91 240sx hatch with a ka24 and i have a little problem, i undid the climate control skrews because they werent doing anything and it turns out it just wasnt plugged in. so i plugged it in and now it turns on the air but it doesnt feel like anything is coming out at all, and when i put it to 4 the car shakes a little while not driving(havent tried while driving). it sounds like its trying to work but nothings coming out. could it be the coolant? i think i have little to no coolant in right now. or is it something else?

[Mikester]

LMAO first of all, I am not sure if you're referring to air conditioning refrigerant or coolant. Coolant is the water in the radiator that cools the engine. If you have little to no coolant- it will behoove you to fix that first as it can cause your engine to go boom.

The level of refrigerant has nothing to do with the amount of air coming out of your vents, just whether or not the AC will function.

Sounds to me like either the blower motor or blower motor resistor are loading down the electrical system causing the car to shake. I bet this is why the previous owner had it unplugged. Try replacing the blower motor resistor- If you pull your glove box completely open, it's right there in front of you. two 8mm bolts, one connector- easy peasy.

If that doesn't work, go from there.

[KoukiMonsta]

LMAO first of all, I am not sure if you're referring to air conditioning refrigerant or coolant. Coolant is the water in the radiator that cools the engine. If you have little to no coolant- it will behoove you to fix that first as it can cause your engine to go boom.

The level of refrigerant has nothing to do with the amount of air coming out of your vents, just whether or not the AC will function.

Sounds to me like either the blower motor or blower motor resistor are loading down the electrical system causing the car to shake. I bet this is why the previous owner had it unplugged. Try replacing the blower motor resistor- If you pull your glove box completely open, it's right there in front of you. two 8mm bolts, one connector- easy peasy.

If that doesn't work, go from there.

Haha that cracked me up Mike.

OP, follow his advice.

Does it blow air? From the vents? (Wondering if shaking implies compressor kicking in and idle not compensated for) kinda drunk read it fast..