Heater not heating properly?

Tiny
FE1972
  • MEMBER
  • 2018 BUICK ENCORE
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
My car blows cool air while idle when heat is on but blows warm air while moving. What's causing this?
Sunday, November 19th, 2023 AT 4:07 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

Have you checked the coolant level? It sounds like you may be low on antifreeze.

Do me a favor. Allow the engine to completely cool off. Once it has, open the hood and locate the coolant reservoir. Make sure the engine is cool and open the reservoir cap to check if the coolant is low.

Let me know what you find. Also, I attached a pic below showing the reservoir. It shows unbolting it because it came from directions for replacement. However, that isn't what we are doing. It's just to help you locate it.

Let me know what you find.

Take care,

joe

See pic below.
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Sunday, November 19th, 2023 AT 8:24 PM

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