Okay. Ive scoured the internets, and there is no solid answer...
The heater hose that goes from the intake manifold to the inlet of the heater core has a restrictor.
Ive looked everywhere, called ford- read through my haynes manual and there is NO definitive answer anywhere...
Some people say it should be on the intake manifold side, some people say it should be in the firewall side.
Some people say it should go big hole to small hole with water flow like this...
(firewall) <~~o==O~~ (intake manifold)
imagine the squiggly lines is the water flow and the direction is the arrow, and the thing in between it is the restrictor(imagine it is inside the hose..)
When the hose was replaced the first time, im not sure if it was replaced correctly- so when i replaced the hose there was no telling if it was returned to the correct place.
please, any information would be great.
in case youre wondering, this is it