Heater troubleshooting

[Williams3982]

Blows air but its not really warm at all. Going to put in a new F body rad pretty soon. Im going to try flushing out the heater core. Any other simple steps I could do to troubleshoot this?

 

[TurboTdr3.8]

make sure your heater control valve is opening to let the water through

 

[Williams3982]

Is that something you can feel with your hands on a line or something?

 

[TurboTdr3.8]

You can feel the valve to see if it's hot make sure there is vacuum at the valve to make it work

Posted from the TurboBuick.Com mobile app

 

[groumoutis]

You can remove the valve and if you have a mity vac you can draw a vacuum on the valve and look through the valve and you will see it open.

If you don't have a hand held vac pump you can plug the coolant hoses and hook the vac line that normally runs the valve and have someone turn on the heat.