PR_TRUCK

Hello guys, my A/C stop blowing air. One guy mention it could be the compressor, other said is the blower. I think is the blower because I here the compressor running. How i can diagnose this before going to a mechanic and he tells everything is screw?

thanks in advance

rworegon

http://www.4crawler.com/4x4/CheapTricks/Blower.shtml

Discombobulated

Fuses? If all the fuses are good I would point to the blower motor. Start with those then get into the can of worms.

rworegon

Another easy one would be a loose electrical connection at the blower.

kuzbro

With the engine running, have someone turn on the AC and see if the (electric)clutch engages. I'm not that familiar with Toyota's yet, but a common sign of low freon is a short cycling compressor. If the compressor is working properly (with a good charge) the suction line should be cool to touch and you'll see condensation on same.

RAD4Runner

Good move asking the forum before trusting your truck to those you should not trust!

You said "stopped blowing" so you mean it does not blow air from the vents, right? If so, then it's a problem with the blower circuit, that 4crawler covers on his website, not the compressor (Blower does the blowing of air, compressor does the compressing of refrigerant that produces the cooling process.)

Blower relay and fuses for blower (blowing air) and air-conditioning (cooling air) are in dash, behind the cigarette lighter jack and to left of glove box




Schematic with notes on what you could quickly check without taking things apart is here:


Album URL: http://photobucket.com/rad4runner_hvac

Best of luck.

msucoggy

i follower the pics posted...thanks so much...suspected issue was behind dash/glovebox...fuses under hood good...connections good...pulled out vent filter (had no idea it was there but it was nasty)...checked ac on and off...nada...finally used a pen to push on the fanblade and boom...fan blowing again. apparently the garbage on the filter fell into fan so hung it up. thanks! the 103 degree tx heat w no a/c has suuuucked

scope103

Hmmm. Looks like they are on the other side (closer to the right door -- ignore the dyslexic caption in the photo) in my '94.