not warming up or blowing heat not thermostat

[skochan]

New to the forum not sure if i put in correct area. 1999 ford ranger 2.5 not warming up or blowing hot heat. changed thermostat and sending unit. if its super hot out it can barely get into normal area. If i hold the fan for a while i can get it to warm up but the second i start driving it drops to cold again.

 

[skochan]

read some similar posts and will try cardboard in grill, but i shouldnt need that in spring!