PLYMOUTH HEATER NOT WORKING

There Is No Heat In My Van But It Does Blow Cold Air. Also, Every Now And Then, The Check Gauges Light Comes On And The Needle States...

Only Small Amount Of Heat Comes Out When Temperature Outside Is In The 30s. Have Put In A Super Stat Thermostat Recommended By Mechcanic....

My '88 Plymouth Reliant's Heating And Air Only Blows From The Floor And Slightly From The Top Of The Dash And When It Does It's The Same...

No Interior Heat Heat Does Not Come On

My Heater Motor Stopped Working. I Have Checked To Switch And Controls. How Do I Get At The Heater Motor?