Heat Will Not Blow Thru the Floor Ducts

Bad blend door

 

Have you checked the cabin filter if it's restrictive? I have this problem with a Gen2 car I've owned, changing the cabin filter somehow makes it better

 

Yes! This is the first step! Next step after that is changing vent settings again and again to isolate where system is normal and where system is a problem. Also sometimes just repeatedly changing vent settings will exercise them enough to get them to function normally. Next step after this is diagnosing the vent controller motors/mechanics that run this...

 

There are three doors that move in the heating system:

• the inlet door controls whether fresh or recirculated air is used
• the blend door controls how warm the air will be
• the outlet door controls which set of outlets the air will blow from

So if there is a bad door, or door actuator servo, involved, for this issue it will have to be the outlet door.

 

When I encountered this problem, there was only 1 vent that didn't seem to blow hot air out consistently. When the temperature is changed, it would blow hotter air if it was turned up accordingly. I still can't figure out if this would be an outlet door control problem or a blend door control problem. Or possibly both.

 

the good news is that toyota has allowed for easy access and repair in their design

 

Toyota of Neptune, that is. They build them a little differently there.

 

LOL, i was afraid of that, i'll just wear warmer socks.

 

There are three servos, one controlling each door.