heater question

[Chuck Youngblood]

Now that my brakes are fixed I can move on to the next problem. I have replaced the t-stat and I still do not have good heat. I did find out that when I restart the truck after getting gas or whatever that the heater for just a short time blows air so hot it would run you out. Then it cools off as I start driving so I am guessing a blend door issue or the heater control itself. It is climate control equipped. Any suggestions?

[Jsdirt]

Blend door issues are super common in the 900 series. That would be my first guess. An air pocket will do the same, though, although usually not blowing hot air initially.

 

A scan tool will show whether or not the doors are opening properly in live data.

[Chuck Youngblood]

Okay, thanks. I'll get it scanned