cold CUCV

[jag7720]

Is it the original heater core? If so, is it hot? If it is hot then check the flap door... the heater core is always on... there is no valve in this core. The door/vent regulates the temp.

If it is a new aluminum core that is a bit thinner... take it back and get a copper one. I went through this. That aluminum one is NOT the right part even though it fits.

 

[dduncan]

if you want you heater to work better.. there is some plumbing changes you can do like on the HMMWV system. plug the radiator where your heater hose comes out. on your water pump there is a pipe plug on the same side... remove it and install a 45 degree threaded hose fitting. then hook your heater hose there. it is more of a closed loop system

Why did they run the heater core line into the radiator to start with? Don't most vehicles have a closed loop to the motor for the heater core??

No wonder mine takes ten years to get up to 150 degrees when it is only 35 out!!! Its circulating new cold antifreeze in all the time!!

 

[detroitmuscle1986]

yeah the flap is working properly, and the heater core is heating up. It is an aluminum heatercore. It was on there when we baught the truck. Should we take it back and buy a copper one?

 

[Zero_cool]

i have the aluminum one in my m 1028 and i notice like what Jag was saying cold air comes in from the outside vents between your windshield and hood and mixes cold air with warm air, all i did was swirt a can of insolation into the outside vent to block off cold air and left my passanger side floor vent open as a cold air return.
It recycles cooler air from the floor of my truck and replaces it with nice hot air.

 

[JamieM1009]

Try this...

What's the difference between these two stats? I think I have the one on the left, is this the wrong one?