1995 Mazda MPV NO HEAT

Temp gauge is normal, I tried to check the hoses also,
they are both warm, almost like there is not enough flow through it. I even put a fluching T in the back at the inlet hose of the heatercore and I can take the cap off and the waterpump doesnt force anything out unless I put my filling funnel on the rad and put the level higher than the flushing T cap.
I was thinking it may be the waterpump. I have been turning wrenches for 24 years and have had one car( a mitsu.) That had no heat, but it would overheat, ended up being the fins on the impeller was rotted off.
But I dont lose coolant on the mazda and it doesnt overheat at all.

Where would the heater valve be located?
The return hose goes into the thermostat housing,
the other looks like it goes to the waterpump housing.
I didnt see a vavle in the system.

I was going to when I replaced it, they make one thermostat for the car, and its a 180. No other options.

If I do squeeze the inlet hose repeatedly, I can get heat out of it, but then when I stop, it stops too.
It just seems like it isnt flowing, but when I put water with a hose into the inlet hose to back flush the system, it flowed great out of the heatercore.

Im stumped.

Done that too, thats why I installed a flushing T in the heatercore. I tried that with the car inclinded in the front, in the rear and still no change

He said he had 125 degrees out of the defroster, that doesnt seem high enough.
I check all temps at low blower and when I first bypassed the rear heater, it was 165 out of the center vent. Then it was gone when I drove it.