There are a bunch of things that can cause that. Water pump, thermostat, switch not engaging the heater, air in the heater core, not enough antifreeze in the cooling system.
do i need a new thermostat
my instrument cluster and my back window wiper and the heat on my 1999 dodge caravan is working
Because it is an Dodge. GET A CHEVY
the thermostat needs to be replaced
Heater coil could have went out.
Check coolant level Could be a weak thermostat
How do I replace the heating coil in a 2006 Grand Caravan? I have no heat it only blows cold air.
If equipped with rear heat it has two. IF front only, one.
Water is leaking on passenger side floor board when heat is on
No. It will keep running until the engine is ruined.
The heater on a 1999 Caravan doesn't have a heater valve. The temp is regulated with a blend air door that is controlled by the body computer and climate controll head.
please dont say this question again
Temperature blend door motor likely defective. Default position is high heat.