When I open the door, before the key, the is a light clicking under the glove compartment for 30 seconds. Then a loud clicking from the center dash for another 30 seconds. Then air starts blowing, but no heat.
Blower motor worn and weak, taking time to actually start due to worn out brushes in the blower motor. Change the blower motor. The clicking that you hear is actually the springs that provide tension on the brushes. Sounds like the brushes have fell out, leaving only the springs to provide the needed voltage. Springs rubbing the contacts will sound like a slow click click click at first, but will speed up as the motor shaft starts spinning faster.
SOURCE: Heat wont blow through heater or defroster vents
common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.
SOURCE: air conditioner blows hot air from dash
On most cars when you push a button or slide a lever to change your choice of location where you want the air to blow out louvers move inside the dash to redirect the air to your chosen location. When you switch from heat to AC other louvers move. These louvers are often powered by vacuum lines running from the engine. If one of these louvers is stuck or if you have a vacuum leak in one of the lines it may be causing your problem.
SOURCE: when ignition turned to on a loud clicking coming
Sounds like a temp door actuator. Does the heater controls move to all positions and change from hot to cold.
Testimonial: "thank i puilled the air con. fuses and problem disappeared and when the 10 amp fuse was reinserted problem came back so i am going with the actuator a"
SOURCE: Heat wont blow through heater or defroster vents
Had the same problem. believe it or not i changed the gas cap and got heat all around. something about pressure.
SOURCE: 99 chevy silverado heater doesn't blow hot air,
In addition to faulty actuator motors, the blend door itself can also be broken. This happened on my Tahoe. Typically it is a very labor intensive and costly fix to replace a broken blend door, as the dash must be removed and the plenum assembly replaced. There is a DIY kit from heatertreater.net that provides steel hardware as well as instructions on how to perform the repair by removing the glove box rather than the entire dash.
This is also an alternative to replacing the 'difficult to access' top actuator motor underneath the dash. The kit contains a single blend door which converts the dual control to single control, and is operated off of the bottom actuator motor, which can be accessed by removing the glovebox. If you are having issues with your blend door, or the 'top blend door actuator motor behind the dash' it is worth looking into.
137 views
Usually answered in minutes!
×