water valve for heater problem (1 Viewer)

[pdx650]

I have a '97 4runner with the 3rz-fe 2.7 liter 4 cylinder engine and it is a 4x4. I do have a rear heater which does put out mildly warm air, not warm enough for rear passenger comfort. But I am actually having problems with the main heater for the front controls. The fan works. I have found a replacement valve for the small leaking water valve on the other side of the firewall for 30$. However, I do not know if replacing it will fix the problem. I have to replace it anyway. I think the warmed air is being directed else where, but I don't know how or why. Maybe a flapper door is not operating the way it is supposed to.
I have seen a small (drops forming) leak on the cable connecting the warm/cold lever inside at the hvac controls to the actual valve itself. That is why I have to replace it.

 

[40Habits]

1. Check your Engine coolant volume (if it is low you will not get heat)
2. Heater control assembly ( you should be able to hear the flap move back and fourth or feel it)
3. Water valve ( is the valve you are replacing on the back side of the engine)
4. Heater radiator ( you should be able to feel a warm return hose below the water valve if it is flowing through)

5. Thermostat ( if you are not over heating I doubt it is that)

Those are your options. I hope it is just your water valve for a quick fix.

 

[pdx650]

Thanks for response. I'll check all those out.