RepairPal's independent, master mechanics track down the best of the best in auto repair. Learn more »
Get the latest advice about your car
Hi I had my heater coil replace but still no heat blowing blower blows but not heat. also the a/c dosen't blow out cool air
You could have an engine that is not getting hot enough, or a temperature blend door motor in the dash that is not working. Check the inlet and outlet hoses for the heater core -- very hot? Both? If so, it's a blend door issue.
Q&A > Lincoln > 1999 Lincoln Navigator