Question about AC Cars & Trucks

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My AC stopped blowing High flow air. Its blowing a very faint amount of air at max setting. I changed both blower motor and resistor and nothing changed. What can be causing this?

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  • AC Master
  • 1,326 Answers

Damaged controls

Posted on Apr 15, 2015

  • 1 more comment 
  • Don Randino
    Don Randino Apr 15, 2015

    Blower motor changes speeds when i changed them on the control.

  • Richard Faber
    Richard Faber Apr 15, 2015

    blower door are not opening fully. you motor maybe working OK but the doors r not blocking the air or the compressor might not be kicken on

  • Don Randino
    Don Randino Apr 15, 2015

    Compressor is working turns on when ever i turn the ac on and its blowing cold. When you say blower door is the the circulating door thats right on top of the blower motor? That one also seems to be working or is there another one?

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  • AC Master
  • 880 Answers

HI SPEED BLOWER RELAY PERHAPS

Posted on Apr 06, 2015

  • Don Randino
    Don Randino Apr 06, 2015

    Its a 2008 Pontiac Grand prix 3.8 i replaced the blower resistor but disnt make a diffrence

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

subytech1
  • 244 Answers

SOURCE: 2009 ford escape ac intermittent

Make sure your fan is coming on, you should hear it come on when you turn on the A/C or defrost. The most common problem for that symptom is the fan relay burns out, and the A/C comes on strong but then overheats quickly making the pressure in the condenser get too high and the pressure cycling switch automatically turns off the A/C. The condenser then cools and the process starts over. If you can locate your radiator fan fuse and relay, which will be in the fuse box under the hood, you can rule out the relay by pulling one of the same size from another system that isn't important like the fog lamps(if equipped). As long as you verify that the fan is NOT working, you would try this relay swap test as long as the fuse is still good. I work for a Ford dealer as a technician, if you brought your vehicle in for service for an A/C or heater concern and your still having problems with it. You can bring it back in for a "recheck" or "repeat" repair and they will have no right to charge you again... If I worked on someones car, and the problem came back after they left, I would seriously want to know because I care about my work and care about my name as a master technician. Just remember, you do not have to pay for repeat repairs... EVER!!
I hope this info helps!~subyguru~

Posted on Mar 31, 2012

  • 4 Answers

SOURCE: AC is only blowing through the defrost vents in the dashboard?

I think your problem is the head unit that selects where the air comes out ie. Face, floor, defrost, or hi-level face and floor. If that's not working then it will not let you switch location that you want the air to come out.

Posted on Jul 31, 2012

cabrooksjr
  • 13 Answers

SOURCE: blower motor resistor

Two bolts a little neck twisting 5 mins...
Look under the dash follow the wiring from the blower any two of them will lead you to the resistor. It's in the air box about.

Posted on Jul 27, 2009

rogrrabbit
  • 986 Answers

SOURCE: my 2003 jeep wrangler AC/heat fan doesn't blow any air out.

You can test both of them once you have it apart. I have given you instruction below. Please follow them as injury could result.


REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

CAUTION: Stay clear of the blower motor and resistor block (Hot). Do not operate the blower motor with the resistor block removed.

Disconnect and isolate the battery negative cable.
Remove the glove box from the instrument panel (Refer to 23 - BODY/INSTRUMENT PANEL/GLOVE BOX - REMOVAL).
Pull out the lock on the blower motor resistor wire harness connector to unlock the connector latch (Blower Motor Resistor Block- Typical).
Depress the latch on the blower motor resistor wire harness connector and disconnect the connector from the resistor.
Remove the two screws that secure the blower motor resistor block to the HVAC housing.
Remove the resistor block from the HVAC housing.

Posted on Jun 20, 2009

  • 37 Answers

SOURCE: Blower motor vent selection switch not working

the hvac selector switch in the dash may be the problem.You need to remove the switch and look at the connector on the back of switch,see if there are any burnt wires at the connector or switch.It's all electronic and the switches have been known to burn out on this and other model.

Posted on May 26, 2009

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