Poor heating

[dreja]

PetzK, thanks for the link.
I was already suspecting a clogged heater, so I washed it with a pressurised water. I've plugged a hoose at one heater plug and left the other heather's plug opened.
The pressurised water was flowing throug the heater without problems.

I've also checked the heater valve on the firewall with pressurised water and it works ok.

So I think my heater isn't clogged...

Anyway, I'm wondering how the heater is build inside. Does it have just one hoose (bended) running from one side to the other ? Or there are some hooses paralleled?
In the case of parallelled hooses I might have some of them clogged...

If I remember well, time ago I've tried to pump the heater's hoose with car running. The hoose wasn't hot. I thinkf it should so hot that I could keep it touched just for a few seconds. But it wasn't.
So I decided to exchange the thermostat. I've already ordered one at Toyota (price about 25 eur). We'll see what happens after the exchange.

Regars
Andrej