Heater blows cold air in front and rear. Hoses going to and from firewall are hot. Replaced thermostat. No change.
Dec 6, 2018 at 12:23 AM
Heater blows cold air
1998 FORD EXPEDITION
JK3509
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Good morning,
The odds of having two blend door motors fail at once are light getting struck by lightning.
https://www.2carpros.com/articles/car-heater-not-working
The first thing I would do is to remove the hoses from the front and flush out the heater core. Use a garden hose to flush back and forth until all debris is gone and there is an even flow. If that does not work, good chance you will need a heater core.
https://www.2carpros.com/articles/replace-heater-core
Roy
The odds of having two blend door motors fail at once are light getting struck by lightning.
https://www.2carpros.com/articles/car-heater-not-working
The first thing I would do is to remove the hoses from the front and flush out the heater core. Use a garden hose to flush back and forth until all debris is gone and there is an even flow. If that does not work, good chance you will need a heater core.
https://www.2carpros.com/articles/replace-heater-core
Roy
Dec 6, 2018 at 4:25 AM