Heater cold

[Corky893]

Hiya guys. My gen 7 warms up lovely, no overheating but no warm air through my vents. No air lock, checked pipes into bulkhead. 1 hot 1 cold. Just no heat. Any suggestions.. Ps. Checked thermostat also 

[raggaride]

If one pipe is cold and one hot you've either got a blocked heater matrix or an air lock in the matrix. Does it get warmer if you rev the engine. You can also try removing the hoses and flushing the system with a hose to see what comes out, see if it flows freely if not needs replacing

[Scarlett Arrow]

Have you searched this section of the forum?.

I've replied to this issue time and time again.

[raggaride]

What section of the forum, this is the first time I've heard from you thanks

[oldcodger]

Hi,

Not sure where its mentioned in the Celica forum but this one in the Corolla should cover it, a common problem on early 2000- models.

Possibly due to not using Deionised water, if you are in a hard water area, or mixing different types of antifreeze without a good flush.

https://www.toyotaownersclub.com/forums/topic/76133-heater/#comments

[Scarlett Arrow]

4 hours ago, raggaride said:

What section of the forum, this is the first time I've heard from you thanks

https://www.toyotaownersclub.com/forums/topic/186208-head-gasket-or-radiator/

[raggaride]

Maybe you should be sending this info to corky893 who has a no heat in car problem. Sorry