1986 Cadillac Fleetwood heater blowing cold air

1986 CADILLAC FLEETWOOD
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THOMAS MCCAULEY
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Heater problem
1986 Cadillac Fleetwood V8 182000 miles

I changed the thermostatic, replaced the water pump and the heater ran for a day. The next day cold again, I back flushed the heater core the heater ran for a day. So should I change the heater control valve, or the heater core or both give your opinion. Thank You......
Nov 26, 2009 at 10:04 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
Try the heater control valve 1st I don't think there's a problem with the heater core it works one day next day don't work-either it works or not
Nov 27, 2009 at 3:45 AM
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