truck over heating & now me

PLEASE HELP ME, i HAVE A MAZDA MP VAN, I CHANGED MY THERMOST, FLASHED IT, AND NOW I REMOVED MY HEATING COOL , BY PASED IT. SO IT DOSN'T GO INTO THE FIRE WALL IT JUST GOES STRIGHT THREW. I TRYED EVERY THING.
THANKS NICK

 

You didn't by any chance install the thremostat backwards did you? Was it over heating before the thermostat install?

Is the fan belt tight? If an electric fan - is it turning on?

 

You said you tried everything. You really need to name them all so we do not have to try to say things you already did.

What do you know about the coolant circulation, and the radiator or hoses, that there aren't any restrictions?

You did not say how old or how many miles the vehicle has on it.

You did not say if it overheats when driving on the highway or around town, or both (depending on the answer, it could be different things).

Or if you have ever flushed the system.

Or if the vehicle has been using coolant (where it disappears without any signs of leaking).

Or if air bubbles appear in the reservoir when the vehicle is running.

Or what the temperature of the top hose feels like when it is overheating, and if the bottom hose feels somewhat cooler at that same time (that is the way it is SUPPOSED to be, when good.)

Stuff like that.