my heater smokes

[88mjmanche]

so finally got cold and now i used my heater and the thing worked good for about 15 mins then smoke started to come :nuts:. this olny happens when its on high heat and power. :???: when its not its perfect. any tipssssssssss :dunno:

[Eagle]

Is there any smell? Where does the smoke come out?

 

My first guess is that your heater core leaks, and when it's hot you're actually getting steam from heated coolant inside the cabin.

[Automan2164]

:agree:

 

Check for coolant dripping out of the footwell vents, and look for an oily film on the window above the defrost.

 

Rob L.

[BlueXJ]

The one in my XJ had some leaves and pine needles in it and smoked until I cleaned it out. Smoking is a bad habit and un-healthy even for a Jeep.

[SomeNew Name]

Try the Patch it seems to help, or nicorette..

[sinkrun]

Maybe mice filled up the duct work with crap? And yes this can happen.

[88mjmanche]

yea its smoke for sure and yea its bad for me but i think it is pine needles

[HOrnbrod]

so finally got cold and now i used my heater and the thing worked good for about 15 mins then smoke started to come :nuts:. this olny happens when its on high heat and power. :???: when its not its perfect. any tipssssssssss :dunno:

 

Do you mean you see smoke when the blower is on HI speed? Blower motor might be going bad.