Question about 2001 Pontiac Grand Am SE

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COLD AIR BLOWING INSTEAD OF WARM

THE TEMPERATURE CONTROL KNOB BROKE OFF AND I CAN'T GET THE KNOB TO TURN TO THE WARM(RED)SECTION SO I HAVE NO HEAT--HELP??

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Use a pair of needle nose pliers to turn the metal shaft clock wise for hot counter clock for cold until you get replacement nob. DEALER ITEM

Posted on Jan 25, 2009

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Pull off one of the other knobs and use until you can get a new one from dealer.

Posted on Jan 24, 2009

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No heat. New thermastat, heater core flushed, good circulation. Has a rear heater.


Does blower motor work , air blowing out of ducts ?
Temperature blending is varied by the air temperature control door, which regulates the amount of air that flows through and/or around the heater core (18476) , where it is then mixed and distributed.
Movement of the control knob from COOL (Blue) to WARM (Red) causes a corresponding movement on the air temperature control door and determines the temperature that the system will maintain.
Temperature Control
The temperature control operates in the following manner:
  • Temperature control of the heater system is determined by the position of the temperature control knob (between COOL-BLUE and WARM-RED) of the heater control .
  • This control knob is connected to a potentiometer mounted in the heater control . This potentiometer is electrically connected to the electric blend door actuator that operates the A/C air temperature control door.

Feb 25, 2016 | 1996 Ford Windstar

1 Answer

Why is heat not blowing out vents?


Either your heater core is clogged with coolant crud, or your blend door is not actuating between cold and hot. If when you turn the heater control knob from cool to warm and you hear a clicking or gear grinding noise, your blend door gear is probably broken. If not, it is just a clogged heater core. Let the engine warm up, then pop the hood and look for two black rubber hoses running from the engine into the firewall. feel both of these hoses. One should be hot and one should be warm. If one is cold or room temperature, the heater core is clogged and will need to be flushed out.

Jan 04, 2016 | 1990 Cadillac Deville

1 Answer

Where is the air and heat blend motor on a 2000 dodge dakota?


Hi Sharon, I'm glad to help. Your 2000 year doesn't have a motor for the temp door. It operated by a cable running from the control head to the temp door and you work it manually. If you can't control the temperature from hot to cold, sometimes the cable come off or breaks. Here how you can see the cable to see if its working. Remove the radio and right behind it you will see the cable attached to the door, while watching it move the temp lever from hot to cold and watch it. If it is moving then its most likely out of ajustment. If it is not moving, then you'll need a new cable. Just in case it is moving, I'm attaching the instruction on how to adjust it below. Hope this helps and have an awesome day Sharon!



TEMPERATURE CONTROL CABLE

Any time the heater-A/C control or the temperature control cable are removed and/or replaced, the following procedure must be performed.
  1. The temperature control cable housing and core must be installed at both the heater-A/C control and the heater-A/C housing ends, and the heater-A/C control must be installed in the instrument panel. See Heater-A/C Control and Temperature Control Cable in the Removal and Installation section of this group for the procedures.
  2. Rotate the temperature control knob on the heater-A/C control so that the knob pointer is in the 12 o'clock position.
  3. Pull the temperature control knob straight out from the heater-A/C control base until the perimeter of the knob (not the knob pointer) protrudes about 6 millimeters (0.25 inch) from the face of the control base.
  4. Rotate the temperature control knob to the 1 o'clock position. Push in on the knob slightly and continue rotating the knob to its full clockwise stop. The knob pointer should be aimed at a position about 8 millimeters (0.315 inch) beyond the end of the graduated red strobe temperature control graphic on the face of the heater-A/C control base. If the knob is not pointed to the correct position, go back to Step 2 and repeat the adjustment procedure.
  5. Rotate the temperature control knob counterclockwise until the knob pointer is in the 12 o'clock position again.
  6. Push the temperature control knob straight in towards the heater-A/C control base until the perimeter of the knob (not the knob pointer) is flush with the face of the heater-A/C control base.
  7. Rotate the knob to its full clockwise stop again. The knob pointer should be aimed at the end of the graduated red strobe temperature control graphic on the face of the heater-A/C control base. If OK, go to Step 8. If not OK, go back to Step 2.
  8. Rotate the knob to its full counterclockwise stop and release the knob. If the knob springs back from the counterclockwise stop, the self-adjuster clip that secures the temperature control cable to the blend-air door lever is improperly installed. See Temperature Control Cable in the Removal and Installation section of this group for the procedures. If the knob does not spring back, the temperature control cable adjustment is complete.

May 14, 2014 | Dodge Dakota Cars & Trucks

1 Answer

Heater blowing cold air


There are only 2 reasons for a problem like yours. Either the water is not going through the heater core or the ductwork under the dash has a problem. For checking the water flow, warm the truck up and then feel both water hoses connected to the heater core. They should both be hot if the water is flowing. If they are both as warm, then the problem is inside the cabin under the dash. If they are not equally warm, there is a problem with water flow.

Tip- For a time the manual heat control models(Not electronic) used a heater knob which could break on the backside of the knob. When it does this, the heater control shaft will not turn as the knob is just spinning in place. Gently pry the knob off and then twist the control shaft to see if it will now work.

Feb 05, 2014 | 2000 Ford F150 Flareside SuperCab

1 Answer

My 2005 kia sorento will not switch from hot to cold and vise versa. the mechanic is saying its probably the "airdoor actuactor motor / mixer actuator. any advice and where to buy this part(s) for a g


Sorry for your troubles ,
Temperature Hand in dash reading NORMAL ?
Does it Turn Blue to Red if so is do you feel friction or restraint like your turning something rather than freewheeling (smooth fast turning) or Digital and or does it show that it should be warm and not cold ?
Does the TEMP change at all(even the least little bit could narrow the results down) when knob is turned?
POSSIBLE - The Actuator/Motor that switches the VENTS very well could be BAD , Temperature Switch / Climate Control Switch (hot to cold could be broke at the base and only allowing the knob to turn and not in the switch ) Thermostat may be stuck open (keeping the engine running cool and smooth but no heat , maybe just a slight TEMP change when switched from Cold to Hot ). The A/C Switch is pushed in or turned on or broke and is stuck ON
FIXES - 1st- Check FUSES - If Temp HAND Reads Normal it not your THERMOSTAT. - Change the Control Switch / Temp switch - Check A/C Button/Knob . AUTOZONE is my place of business they PRICE MATCH AS WELL!
Hope this Helps , Flaming Ratchets Auto Repair

Dec 05, 2013 | 2005 Kia Sorento

2 Answers

2007 corolla does not give off heat, blows cold. temp shows correct range, heater core hoses hot to the touch inside and out, radiator hoses hot and fluid is sufficient.Would thermostat be at fault even if...


there should be a temperature door, but I don't know if there is a cable or if its electric. turn the temp knob, if it feels like it moves anything? I dont have a diagram here at home, but will monday/

Dec 06, 2010 | 2007 Toyota Corolla

1 Answer

Honda Accord LX has bad temperature control switch? I just got my A/C recharge with new freons and it is working. Before it was just blowing hot air when A/C is switch on and the A/C control knob turned to...


  1. what year model is accord?
  2. there are several doors in the air box
  3. blend door (hot cold)
  4. mode door (defrost, floor, vent)
  5. recirculation door (outside air)
  6. if the control mechanism is defective. the tech may have reached under the dash and manually opened the blend door.
  7. which control knob does not work mode or temp?

Jul 26, 2010 | 1994 Honda Accord

1 Answer

Heater does not blow warm air


The click from He..., anyway hear is the problem, there is an electric motor that controls the door deep in the dash that sets the temperature of the outlet air, it is called a air temperature control blend door actuator, it has failed, in order to replace this part u must remove the dash assembly.

Apr 28, 2009 | 2003 Ford Explorer

1 Answer

I have the same problem with my windstar blower is fine but is coming cold air but no heat i dont know what to do can any one show me how to fix it thnx


First, feel the heater hoses going into the firewall under the hood. If they are hot, then you have hot engine coolant going into the heater core. If they are not hot, then you either have a bad thermostat or you are very low on engine coolant.

Next you need air flowing through the heater core so it can come out heated through your vents. If the iar is flowing somewhere else, your temp blend door is not moving because the bend door motor is bad or your temp knob on your heater controls is bad. The blend door motor is an electric motor.

------------------------------------------------
Air Flow Control
Air flow control is accomplished in the following manner:
  • Primary control is through the function selector knob , mounted on the heater function selector switch, which is part of the heater control .
  • The function selector knob has the following positions: OFF, PANEL, PANEL/FLOOR, FLOOR, FLOOR/DEFROST and DEFROST.
  • The heater function selector switch combines a vacuum selector valve with an internal electrical switch.
  • The vacuum selector valve directs source vacuum to various vacuum control motors (18A318) . Refer to the System Airflow Schematic and Vacuum Control Charts.
  • An internal single-pole electrical switch is also controlled by the selector. The switch controls the electrical supply to the heater blower motor switch (18578) .
  • The position of the function selector knob determines the manner in which the system will operate.
  • Each position of the function selector knob is detented for positive engagement.
Temperature Control
The temperature control operates in the following manner:
  • Temperature control of the heater system is determined by the position of the temperature control knob (between COOL-BLUE and WARM-RED) of the heater control .
  • This control knob is connected to a potentiometer mounted in the heater control . This potentiometer is electrically connected to the electric blend door actuator that operates the A/C air temperature control door.


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  • Movement of the control knob from COOL (Blue) to WARM (Red) causes a corresponding movement on the air temperature control door and determines the temperature that the system will maintain.
System uses a reheat method to provide conditioned air to the passenger compartment.
  • All airflow from the blower motor (18527) passes through the A/C evaporator housing .
  • Temperature is then regulated by reheating a portion of the air and blending it with the remaining cool air to the desired temperature.
  • Temperature blending is varied by the air temperature control door, which regulates the amount of air that flows through and/or around the heater core (18476) , where it is then mixed and distributed.
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inside you plenum box:

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Mar 03, 2009 | 1998 Ford Windstar

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