Heater don't work and it's gettin' chilly
 

Just replaced the heater core and still no heat, it look practically brand new. What would cause a heater to not work? Pleae give me some places to start.

Thanks

Re: Heater don't work and it's gettin' chilly
 

This may sound like a stupid question but are all the cables attached to the control unit and where they lead to?

Re: Heater don't work and it's gettin' chilly
 

feel the hoses going to the core do they get warm,did you burp out the air?
when you say it looked new,did you put one in or it looked ok?did you try flushing just it with a hose,even while in truck.there are air lines to the controls that require vacume to work

Re: Heater don't work and it's gettin' chilly
 

A line had a clog in it, replaced the line and it works now.

Thanks for your help