I replaced thermostat heat worked for a day. Now no heat. Car gets up to temperature but blows cold air.
Dec 5, 2018 at 10:30 AM
No heat, heater blows cold air
2006 PONTIAC GRAND PRIX
MIKE BLAIR
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Welcome to 2CarPros.
No heat can be caused by a few things. Take a look at this link. It discusses common reasons for no heat.
https://www.2carpros.com/articles/car-heater-not-working
Now, I need you to do the following.
1) Make sure the coolant level is full.
2) With the engine at operating temp and the heater on, feel both heater core hoses under the hood at the firewall. Both should be hot. If one is hot and the other is not, suspect the heater core is plugged.
If both are hot, suspect the blend air door located in the vehicle under the dash.
Do these tests and let me know the results. I will tell you what needs done and how to do it. '
Take care,
Joe
No heat can be caused by a few things. Take a look at this link. It discusses common reasons for no heat.
https://www.2carpros.com/articles/car-heater-not-working
Now, I need you to do the following.
1) Make sure the coolant level is full.
2) With the engine at operating temp and the heater on, feel both heater core hoses under the hood at the firewall. Both should be hot. If one is hot and the other is not, suspect the heater core is plugged.
If both are hot, suspect the blend air door located in the vehicle under the dash.
Do these tests and let me know the results. I will tell you what needs done and how to do it. '
Take care,
Joe
Dec 5, 2018 at 7:57 PM