2001 Jeep Wrangler "2000 tj heater" Questions

my heater just blows cold air 2000 tj my heater just blows cold air Check coolant level

...tj, heater selecter switch changes on it's own, i believe it is a low vacuum promble, it only happens on the highway when it is working hard, around 2000 rpm, you can hear it switching on you, when ...

...TJ then heater........ FSM http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service shows 7 things can be wrong. (omg what to do, use a meter) now click A/C heater page. same ...

...2000 TJ Sport. the ac system was recharged but does not blow cold. The ac lines under the hood are frosty cold and the condensation comes out the drain tube, but the air from the vents is barely ...