Heat issues 03 Navigator
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Heat issues 03 Navigator
Just purchases a month ago. On the test drive it seemed the heat worked fine. Picked it up that evening ( dealership serviced it first) no heat! And the temp gauge never moved so we assumed bad thermostat. They replaced it, gauge moved but still no heat. System flushed twice, new TS installed, heat would sort of work ( warm air never hot) then blow cold. Dealership kept for a week could find nothing wrong and claimed it was fixed. It is blowing warm air but on high ( 90 with fan full blast) the car interior never really got warm ( 40 outside) our f150 will run you out of the vehicle after 10 min on high. Shouldn't the navigator do the same? Any suggestions?
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Joined: Jan 2001
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From: Central NYS
Is this the dual temp heater?
I believe the '03 used a vacuum controlled heater control valve in the inlet heater hose. Did you check to see that you had vacuum at the valve and the valve wasn't frozen in the "OFF" position?
Was the hose hot on both sides of the heater control valve?
I believe the '03 used a vacuum controlled heater control valve in the inlet heater hose. Did you check to see that you had vacuum at the valve and the valve wasn't frozen in the "OFF" position?
Was the hose hot on both sides of the heater control valve?
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It is a dual temp. Not sure if they checked vacuum but if replacing the core did not work I will ask them if they checked it
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Well they replaced the heater core and now I have HEAT! Real HEAT! If they had just done that two weeks ago I would have been much happier! My SIL thinks the problem may have come from them mixing coolant types when the dealership serviced the vehicle post purchase.
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