Air conditioning makes the car overheat?

Tiny
YOITSTJ
  • MEMBER
  • 2006 HYUNDAI ELANTRA
  • 2.0L
  • 4 CYL
  • 2WD
  • MANUAL
  • 225,000 MILES
I cannot run the air conditioning cause it makes the car overheat, however if the car overheats without the air, if I turn the air on then it will cool the engine down. The timing has been changed and I just changed the thermostat and still overheating. Water pump is fine and no leaks from the radiator.
Monday, July 14th, 2025 AT 8:31 PM

2 Replies

Tiny
MECHTRIX
  • MECHANIC
  • 382 POSTS
Do you think its the original 2006 radiator still in the car? If so id change it. Might be clogged inside and not cooling well anymore. Theres also an upgraded all aluminum radiator thats acually pretty cheap seems to cool quite a bit better than the old version did might want to try that. Best of luck.
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Friday, July 18th, 2025 AT 3:29 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
When the engine is cold I would check the coolant level, this is a guide to help as well

https://www.2carpros.com/articles/engine-overheating-or-running-hot

Please go over this guide and get back to us.

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Sunday, July 20th, 2025 AT 10:44 AM

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