My a/c works and the blower motor blows air out fine if I have it on high or medium. If I put the setting on low, the motor stops. Then if I turn the temperature up to try to get heat, the motor still blows air, but all the vents seem to be closed and if I try to select where the air blows out of, the button doesnt stay down and it doesnt seem to change where the air should blow out of. I thought it might be something like a blend door actuator, but I have discovered it doesnt have a blend door actuator. Has anyone encountered this problem before?
Heater not blowing
- Thread starter ca91mkIII
- Start date
How did you discover that? You mean it's missing?
1) The button is broken.
2) There is an actuator.
3) If there's no temp increase check the coolant valve for operation. The VSV tends to go tango uniform.
1) The button is broken.
2) There is an actuator.
3) If there's no temp increase check the coolant valve for operation. The VSV tends to go tango uniform.
Well the no low speed is easy enough to fix, replace the burned out blower motor resistor pack screwed to the plenum. The rest of this post is incomprehensible to me.
Actually had to look up Tango Uniform... In my experience with heating and Mk3's, it is usually the problem behind door number 3 here. Try opening the valve with your finger (push the plunger upward) and see if that un-sticks it.jetjock;1872631 said:
I am starting to think your suggestion is what might be wrong with my Mk2...3p141592654;1872666 said:
I fount out it doesnt have a blend door actuator because i went to the dealership looking for it and the guy helping me said it doesnt have one. I also looked on Alldata and in the illustrations I noticed it has an air mix solenoid and some other solenoid.
Yea, those stealership parts guys are real technical wizards. Especially on a specific model. One that's obsolete and probably older they are. I'd definitely trust 'em.
The system uses little electric motors to move the dampers, not solenoids. Toyota calls them servos because they provide positional feedback (using integral potentiometers) to the climate controller. All things considered it's a fairly complex system.
Seems to me if your going to try and fix something you'd study up on how it works first and the best place to do that would be the factory service manual and not Alldata. Just sayin'...
The system uses little electric motors to move the dampers, not solenoids. Toyota calls them servos because they provide positional feedback (using integral potentiometers) to the climate controller. All things considered it's a fairly complex system.
Seems to me if your going to try and fix something you'd study up on how it works first and the best place to do that would be the factory service manual and not Alldata. Just sayin'...