At times AC will not blow after cranking truck if on/off switch is left in off position. After about 10-15 minutes of drive time, blower starts if switch is in highest blowing position. After continued drive time, AC intermittently stops blowing but cold air can be felt at vents. When blower turns on, AC is very cold and blower has great power. What causes this? Had a mechanic check and clean all connections, AC and blower worked correctly for a few days, then back to the same problem.
Sounds like the blower motor or the connection to it is failing.Next time it stops give the area below the glove compartment a good whack,if the blower does anything,change it.
SOURCE: my 98 dodge ram is always blowing warm air all the time
the switch that controls the cool to hot well theres a wire that runs behide it and it runs to a little trap door that opens and closes in front of the heater core under your passanger side dash follow the wire and c if it is broken or if it has become disconnected
SOURCE: ac will not blow thru ac vents, only thru defrost vents.
if vent doors are operated by vacuum check for loose or broken vacuum hoses in the engine compartment , or check the fuse box for any ac/heat fuses if it is a electricaly controoled system
SOURCE: 2000 Dodge RAM no HEAT/ New heater core / AC evap.
There is a actuator on the right side of your leg while sitting in the drivers seat under the dash. It has a plastic rod for actuation manually actuate this diverter and should be the problem.
SOURCE: ac does not blow thru dash vents very hard just a
Dodges have issues with the plenum door actuators. You can read online for more information. Sounds like your plenum door either stopped where it was or went to a default ( closed) position. The plenum door mixes the air and moves to allow the desired temp air to pass thru it.
I think you can see the tip of the actuator shaft sticking down vertically from the bottom of the plenum box, just to the right of the transmission hump, where the passengers left toes would be. Most likely you will have to remove the complete plenum for repair. ( pain in the a**). Good luck.
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If I turn AC off or down, blower motor will not come back on when I crank the truck the next time, until about 20 minutes of drive time. It has been suggested to replace the AC relay / and or blower motor relay in the underhood fuse box. Should I start there?
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