avjam4

I have a WJ 99 4.7l jeep grand cherokee, the heater fan works but doesnt blow ant heat anyone got any ideas?

dave1123

Are BOTH your heater hoses hot?

partemisio

Disconnect both heater core hoses and flush the heater core in both directions with a water hose. Make sure coolant is full.

avjam4

Give that a go thanks

avjam4

i flushed the heater hoses and they are getting hot but still no heat. any other suggestions please.

partemisio

You're gonna have to get under the dash and take the blend door motor off and see if it turns as you turn the temperature control ****. While under there, just turn the blend door by hand and you should get heat with it turned all the way in one direction.

Tony_SS

What was the issue? I have the same problem... its barely even warm on full heat.

Funny I needed heat on a June morning in Missouri. Damn that global warming.

avjam4

Sorry took so long i have been away, i tried the blend door motor it works fine, no heat when turn the **** manually though?

avjam4

I'm guessing its a blend door problem? Has any one fixed this and if so whats the best way?

dave1123

There is a kit (don't know the name of it off the top of my head) that fixes it. You have to cut a hole in the heater box, replace the door, and reset the piece you cut out. Other than that, you'll have to pull the dash out.