2001 Ford Expedition is throwing cool to warm air unable to have hot heat or defrost. I have replaced thermostat, water pump, what should I do now?

Asked by Jan 19, 2014 at 09:13 PM about the 2001 Ford Expedition Eddie Bauer 4WD

Question type: Maintenance & Repair

9 Answers

116,535

Feel both hoses going to the heater core in the dash. Are both hoses hot? Or is one hot and the other cold? If both hoses are hot you probably have a damper/mode door motor bad under the dash. If one hose is hot and the other is cold you probably have a stopped up heater core. Also did you get all the air out of the cooling system after replacing the parts? If not an air pocket in the cooling system can cause a no heat issue.

2 of 2 people found this helpful.
20,865

If these are things are ok that dandy described the fins on the water pump may have deteriorated and not circulating enough to have heat. The vehicle will not over heat just have luke warm air inside vehicle.

1 of 1 people found this helpful.

Dandyoun the air pockets was removed. Will check the hoses, thank you

Tuff4x4, thank you

20,865

Water pump will need replaced if the fins inside it are gone.

20,865

No problem but check what dandy said first and let us know.

2,555

blend door stuck...

1 of 1 people found this helpful.

Thank you all for your comments and concerns regarding my 2001 Ford Expedition. I did got the door unblocked, the heat and defrosters are working again.

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