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94 camero will not blow heat

94 camero blows ac air fine but when sitched to heat will not blow air out, even though the fan is running

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6ya6ya
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Posted on Jan 02, 2017

  • 2039 Answers

SOURCE: Heater blows cold, and fan switch only works on 4 and 5

working on 4 and 5 speed that the resistor that broken cold air you got to move the selector to see the motor that move the trap hot and cold sometime when the motor was not move to the hot side for a long time its jam the motor on the passager side under dash put to hot and gently tap the motor tanks pierre

Posted on Nov 09, 2008

  • 66 Answers

SOURCE: 1995 chevy blazer heat, ac will not blow air

yes the heater controls are vacum however the blower motor is not. a new control panel is an option and may fix it. if it was my blazer i would first check the fuse boxes onder the hood and in the side of the dash driver side. if they are good i would go to the nearest auto parts store and buy a test light. this will aid you in making sure what the problem is before you go spending money on replacement parts. the blower motor is in one of two places. its most likely under the dash on the passenger side. there is a cover that you will have to remove directly under the glove box. once removed you should see a large red and a large black wire. these are the power and ground for the blower motor . in some gm's these wires go into a resistor. the harness plugs into the resistor and the blower motor wires come out of it. ok now that we are a little bit familiar with our suroundings the red wire i told you about is the hot wire if you ground the clamp on the test light to the door hindge. (make sure its a good ground by touching the positive batter terminal. if the test light lights its a good ground )now unplug the blower motor and touch the metal posts in the end of the plug that belong to the red wire. if it lights when the key is on and the blower control is on in all posisions you need a blower motor. if it does not then you need a blower motor resistor.

Posted on Jan 24, 2009

  • 67 Answers

SOURCE: ac blows hot air

sounds like you have shorted the a/c cycle switch. when you do this it wont cut the clutch on the compressor this is located on the a/c drier on the fire wall hope this helps you and good luck !!!!

Posted on May 30, 2009

co7196
  • 3433 Answers

SOURCE: AC blow cold air when moving but warm air when stopped

AC system appears low on charge

Posted on Jun 19, 2009

  • 29 Answers

SOURCE: AC vents on passenger side blowing warm air even

You will probably need a new RF temperature actuator which is on top of your HVAC box/under dash pad.($400 + at dealership.) I have replaced MANY....They get stuck and dont know where they are...If you want to try and recalibrate them yourself you can remove the HVAC/ECAS fuse in the underhood fuse block for 30 seconds(engine running) and reinstall the fuse and wait(IMPORTANT) 2 minutes...do not operate the a/c controls during this time...(engine still running) ..Then shut off vehicle and wait 30 seconds.. start the engine again and operate the A/C and see what happens....Hope this helps!!

Posted on Jun 24, 2009

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It sounds like your AC unit could be overheating or even damaged.

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When the car is moving, more air is forced over the unit, likely keeping it cool enough to run, however, when the car come to a stop, it loses that air flow, and quickly heats up. Thus, the AC would work while the vehicle is in motion, and overheat and stop when the car is stopped and idling.

However, the AC unit could be completely blown. The cold air while moving could be just a case of air being forced into the car. Think of a house fan, the fast the wind blows on you, the cooler it gets.... Thus, it could be an illusion that the AC is working when car is in motion, when it really isn't.

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