HEAT!!!

[blueline1430]

Its getting cold and my heat isnt working on the jeep. I thought it may be the thermostat, but i changed it and that didnt work. Where should I start to find heat. Any help would be greatly appreciated.

 

[devlsh1]

check upper andlower hoses going to heater core through fire wall, make sure both are hot...if not, clog in hose or core. Also make sure vents/ doors are moving when you tell them too.

 

[blueline1430]

Thanks, Ill try that

 

[Papa_Jon]

does fan blow? does blend door work ? more info needed

 

[blueline1430]

fan blows, blend door? not sure

 

[Papa_Jon]

its what turns it from cold to hot
is it warm at all ?
make sure you got flow in and out of your heater core... i almost being a older toy that your controll is goof some how

 

[blueline1430]

cant tell how to get to heater core, it just blows cold no warm at all

 

[RatLabGuy]

Is there any change AT ALL when sliding the temp slider?
What kind of Jeep?
If you flip the vent switch, does it actually change sources? E.g. from feet to dash to defrost?
I know on the XJs, there's a pressure bottle that's necessary for these changes to work, if it's broken and/or won't hold pressure, you're stuck in whatever mode was used last. This happened to me when my wife was in a small fender bender and dented the corner fender in.

 

[jackedHB]

Knowing what kinda jeep it is may help. Have you checked to make sure both hoses are hot in and out? If ones hot and others not, disconnect them and shoot and hard stream of water in and see if you can blow out what may be stopping it up, Most times thats the easiest fix.