Location of the heater control valve

Tiny
BEACHERS5
  • MEMBER
  • 2002 DODGE RAM
  • V8
  • 2WD
  • AUTOMATIC
  • 80,000 MILES
Location of heater control valve in 2002 dodge 1500?
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Monday, February 8th, 2010 AT 2:52 PM

7 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
This truck does not have a heater control valve here is a guide to help you see why the heater is not working.

https://www.2carpros.com/articles/car-heater-not-working

Please run down this guide and report back

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Monday, February 8th, 2010 AT 3:54 PM
Tiny
BCMEZZIE
  • MEMBER
  • 2001 DODGE RAM
  • 74,000 MILES
When running the air conditioner on any speed but high it will switch to heat at any given time but mostly when coming to a stop. It will also do this when it is just on vent.
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Tuesday, November 27th, 2018 AT 11:58 AM (Merged)
Tiny
KEN
  • ADMIN
Hey BCMEZZIE,

This would be a blend door actuator problem, here is a guide that will show you what the problem is,

https://www.2carpros.com/articles/replace-blend-door-motor

Here is a diagram and instructions to help who you where the heat control is on your car.

Turn the ignition switch to the run position.
Locate the temperature control knob in the mid (12 o'clock) position.
Turn the ignition switch to the OFF position.
Disconnect and isolate the battery negative cable.
Remove the instrument panel from the vehicle. Refer to Instrument Panel System for the procedures.
Remove the HVAC housing from the vehicle..
Fig.24 Blend Door Actuator Remove/Install

Unplug the wire harness connector from the blend door actuator.
Remove the two mounting screws which secure the actuator to the housing.
Slide the blend door actuator off the blend door shaft.
NOTE: A black plastic coupler may be attached to the blend door shaft. Remove the coupler and inspect for damage. Reinstall if there is no damage found.

INSTALLATION

NOTE: Before installing the blend door actuator, be certain that the blend door is not binding and is capable of full travel in both directions.

Align the actuator with the blend door shaft and rotate the actuator to align it to the mounting bosses on the HVAC housing.
Align and install the actuator screws. Tighten the mounting screws to 2.2 Nm (20 in. lbs.) .
Plug in the wire harness connector to the blend door actuator.
Install the HVAC housing in the vehicle.
Install the instrument panel in the vehicle. Refer to Instrument Panel System for the procedures.
Make sure the Temperature Control Knob is in the mid (12 o'clock) position to allow the actuator to automatically position itself in the mid position and come to a complete stop when powered up.
Connect the battery negative cable.

Please let us know happens so it will help others.

Best, Ken

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Tuesday, November 27th, 2018 AT 11:58 AM (Merged)
Tiny
JAMESD80
  • MEMBER
  • 1999 DODGE RAM
  • 203,322 MILES
My truck is a 1500 5.2 liter. The heater is blowing just barely warm air and not hot.
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Tuesday, November 27th, 2018 AT 11:59 AM (Merged)
Tiny
KEN
  • ADMIN
Your truck does not have a heater control valve it has a temperature control actuator that does the same thing. Here is a guide to help you see what you are in for when doing the job.

https://www.2carpros.com/articles/replace-blend-door-motor

Also check for vacuum at the HVAC check this guide that shows what to look for.

https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position

and

https://www.2carpros.com/articles/car-heater-not-working

Here is the location for your truck (below)

Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken
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Tuesday, November 27th, 2018 AT 11:59 AM (Merged)
Tiny
SFTBL5150
  • MEMBER
  • 1998 DODGE RAM
  • 3.2L
  • V8
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
Where is the heater control valve located on my truck?
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Tuesday, November 27th, 2018 AT 11:59 AM (Merged)
Tiny
CARADIODOC
  • EXPERT
There is not heater control valve on this vehicle. Here is a guide to help you start to see what's wrong with the heater.

https://www.2carpros.com/articles/car-heater-not-working

Please run down this guide and report back
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Tuesday, November 27th, 2018 AT 11:59 AM (Merged)

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