Heat not working properly

6.4stroke · Jan 25, 2013

My heater doesn't seem to be working that good in this cold. Here in pa it's Been around 0 degrees. I let my truck idle for 15 minutes. Heat was working ok. I drive 10 minutes and its blowing cold air. Pulled over coolant level is fine. So then a played with the settings and got it to blow decent. Since then it's not been blowing as hot as it should. I have it set on 90 and like I said it not blowing as hot as it should. I don't think I have a blown hg. No oil in the coolant no abnormal white smoke. Truck runs good. Any help appreciated

Powerstrokeracing · Jan 25, 2013

Pressure test your cooling system just in case. And go for a drive and see if heat kicks in when your at WOT.

When you switch temps does it act like the blend door is moving? Like can you notice a change a temp at all?

gman1 · Jan 25, 2013

Are you running a cold front on your truck? If not they help out allot on these trucks when its that cold.

RedRice589 · Jan 25, 2013

Does your truck get to operating temp correctly my thermostats were makin mine do that to me. Supposed to be 190-200 it wouldn't get above 160

6.4stroke · Jan 25, 2013

Yea. Right at the moment it's working great. Went from 90 to 60 on climate control. I felt colder air immediately went back up to 90 hot air. Lets see if it acts up again

Big Angry Hillbilly · Jan 25, 2013

Blend door motor heading to the ****ter?

6.4stroke · Jan 25, 2013

It might be. We will see what it does for the next few days.

DEEZUZ · Jan 25, 2013

do you get heat while driving/revving, than ice cold while idling?

6.4stroke · Jan 25, 2013

Nope it's warm at idle

6.4stroke · Jan 27, 2013

found out that everytime i run wot throttle my heat goes away for mayb 30 sec. then comes back on. oil and coolant temp are 3 degrees difference coolant level is fine.