Mechanics

HEATER KIND OF WORKING

2007 Saturn Relay • 68,000 miles

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
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Nicoler04
January 8, 2012.



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).

Tiny
Jacksprat
Jan 8, 2012.
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.

Saturntech9
Jan 8, 2012.
I have one hose hot and one hose cold

Tiny
Nicoler04
Jan 9, 2012.
Check your heater radiator for a blockage or restriction

Tiny
Jacksprat
Jan 9, 2012.
Flush the heater core out make sure water flows freely in on nipple and out the other one.

Saturntech9
Jan 10, 2012.