In my 2007 saturn relay my rear heater works great, but the front heater only blows cold air. There is plenty of coolant, the heater and a/c works in the back of the vehicle, and the front is cold with the heater or ac
Check the A/C control unit for fault codes. Feel the coolant hoses going to the heater radiator, are they getting hot? If not you may have an air lock or a coolant circulation problem ( check water pump).
January, 8, 2012 AT 9:58 PM
Just to add to this one the first thing I would check is if both heater hoses are getting really going into the fire wall thats your starting point. If they are really hot then you have a blend door issue. Let me know what you find.
January, 9, 2012 AT 9:17 PM
I have one hose hot and one hose cold
January, 9, 2012 AT 10:15 PM
Check your heater radiator for a blockage or restriction
January, 10, 2012 AT 12:50 AM
Flush the heater core out make sure water flows freely in on nipple and out the other one.