The A/C cools and blows fine. But when I turn on the heat, it stays cold.
Oct 22, 2021 at 9:01 AM
I turn on the heat, it stays cold?
MDPRATTLAW
- MEMBER
- 1 POST
Advertisement
Hi,
First, confirm the engine coolant is full. Also, make sure the engine is reaching operating temperature. Take a look through this link. It describes the most common causes of no heat.
https://www.2carpros.com/articles/car-heater-not-working
Now, if the coolant is full, the engine reaches operating temperature, and nothing in the link helps, we next need to confirm the blend air door actuator is working.
Do you ever hear a clicking coming from under the dash? There are two actuators (one for the left (driver's side) and one for the right (passenger's side). They are called air mix doors and are responsible for the air temperature entering the vehicle. However, if one has failed, you would lose heat to one side and not both. Can you let me know if it is both sides or just one?
Let me know.
Joe
First, confirm the engine coolant is full. Also, make sure the engine is reaching operating temperature. Take a look through this link. It describes the most common causes of no heat.
https://www.2carpros.com/articles/car-heater-not-working
Now, if the coolant is full, the engine reaches operating temperature, and nothing in the link helps, we next need to confirm the blend air door actuator is working.
Do you ever hear a clicking coming from under the dash? There are two actuators (one for the left (driver's side) and one for the right (passenger's side). They are called air mix doors and are responsible for the air temperature entering the vehicle. However, if one has failed, you would lose heat to one side and not both. Can you let me know if it is both sides or just one?
Let me know.
Joe
Oct 22, 2021 at 3:01 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement
parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.