98 taurus ohv heating problem.....

[guerinos]

Need a little help here if you can.....I have a taurus that is blowing nothing but cold air.
I have went through the whole thing on Saturday, and this is what i've done.

1) I took off the heater core hoses that lead into those aluminum hoses, and back flushed the core back and fourth, so now there is good flow going out now. When I put everything back together, and ran it, the bypass hose was warming up, but not the heater hoses. I then kinked the bybass hose to make the flow HAVE to go through the heater core.....still nothing. I then checked the hoses for obstructions....looked ok.
I then did this...I took off the output hose of the heater hose while keeping the kink on the bypass hose just to see if flow coming out.....but the enging was too hot, and the thermostat was open and wasnt getting flow.

2) I check the blend door actuator.....door is working.
3) I replaced the thermostat.....still hoses to the core not heating up.

Now after doing the output of the heater check, I know the core is good, but even if the thermostat is open and the bypass hose kinked, shouldn't I still get flow regardless if the thermostat is open or not?

From reading these forums, I am down to one thing, but I really want to make sure I've checked everything I could before I do this, but I've read that the fins on the water pump disolve after time, and could this be my case??

Thanks,

Eric