Heater not working?

KENNYSTEW

MEMBER
2001 TOYOTA RAV4
128,200 MILES

My heater doesn't blow very hot and it will blow warm air out of the passenger side vents and cold air out of the drivers side vents. It doesn't matter whether I have it on defrost, dash or floor.

It only blows warm not hot out of the passenger side vents and cold only out of the driver side vents

4 Replies

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

It sounds like you are having a problem with the blend-air door actuator. It's a small electrical motor that opens and closes a door to direct airflow through ducts in the hvac box. Here is a tutorial what is involved in replacing a blend door motor:

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

You will have to remove the blower motor unit to gain access to this actuator. I've attached picture steps below showing how to remove and replace the blower motor unit and the blend actuator on your vehicle. Hope this helps and thanks for using 2CarPros.

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Thursday, December 24th, 2020 AT 7:54 PM

JIMBO125234

MEMBER
1 POST
1997 TOYOTA RAV4
4 CYL
4WD
MANUAL
125,000 MILES

I just replaced the water pump, radiator, with upper and lower hoses, thermostat, timing belt, and expansion tank. The car starts and runs fine but I am not getting heat. I had installed a flush kit on inlet heater hose at one point. Now when there is no heat the heater hoses are not hot and don't seem to have water in them. If I crack the cap on the flush kit thing and gradualy let air out the water starts to circulate and I get heat. But within 5 minuets or so the circulation to heater core slows or stops and it start blowing just luke warm or cool air again. If I crack it again I get heat for a while? Any help?

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Saturday, December 26th, 2020 AT 11:12 AM (Merged)

BLACKOP555

MECHANIC
10,371 POSTS

Jack up the front end of that vehicle and then try to bleed out the air. Make sure vehicle is hot when doing this. Sounds like you got alot of air in there.

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Saturday, December 26th, 2020 AT 11:12 AM (Merged)

RASMATAZ