My wife has a 2006 Dodge Caravan withe 3.0.The problem she is having is that the temp guage goes to normal but the heat doesnt blow warm while it is sitting still.Once she starts driving it works fine.Any ideas?Also when sitting at a stoplight in drive the motor will stumble ,when its in park it doesnt do it,no check engine light,and nothing coming up on the computer either,any thoughts?Thanks Mike

 

Try replacing the T-stat (thermostat and gasket), it maybe stuck open.