AC not working

SOURCE: My mom's 98 rodeo ls v6, Her ac was blowing

You need to have the system evacuated, tested and recharged with the correct amount of R134a.
Hope this helps.

SOURCE: AC clutch not engaging

it wont engage if your low on refrigerant you can bypass the low pressure switch located on or near the receiver dryer it has 2 wires plugged into it take a paper clip and bypass the 2 in the boot and it will run long enough to re charge it.

SOURCE: 2000 isuzu rodeo, ac blows outside air temp, i

COULD BE A FEW DIFFERENT THINGS. HAVE YOU TRIED TO SWAP THE A/C RELAY FOR ANOTHER? IT COULD BE A BAD ACCUMULATOR SWITCH OR A CLOGGED ORIFICE TUBE, OR A DEFECTIVE LOW PRESSURE CUT-OFF SWITCH. TOO MANY TO LIST. TRY THE RELAY AND LET ME KNOW. HOPE THIS HELPS. BEST OF LUCK. THANKS FOR USING FIX-YA AND HONEST RATING IN ADVANCE.

SOURCE: my ac is not blowing cold air in my 98 isuzu

System needs to be recharged with R134 freon

SOURCE: Heater Blower won't work

There was a bulletin reguarding water contaminating the blower motor, which overheats the blower resistor and renders it inoperative. The fix was to replace the blower and the resistor and seal the culprit hood cowl screw at the base of the windshield, which is the second screw from the passenger side. They say water drips off of it down into the fresh air opening.
Here's what I'd do: Assuming your switch and blower motor is good, replace the blower resistor. Remove the blower motor and see if it spins without any excessive drag. If it's okay, reuse it. If it's dragging, it will overheat your new resistor in a short period of time and you'll be back at square one. The blower resistor is mounted to the front of the case with 2 screws to the left of the blower motor. Remove the glove box and you'll see it.
The Hood cowl screw is straight down into the cowl, the second one from the right side, about 10-12 inches from the right fender. Pull it out, put some sealer on it, and reinstall it.