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2002 Hyundai Sonata over heating

Tiny
DGMEADORS
  • MEMBER
  • 2002 HYUNDAI SONATA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 97,546 MILES
2002 Hyundai Sonata engine over heats when a/c is turned on even after thermostat is replaced.
Thursday, August 4th, 2011 AT 3:43 AM

4 Replies

Tiny
DANLESABRE
  • MEMBER
  • 230 POSTS
Will it overheat when idle or only when driving?
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Thursday, August 4th, 2011 AT 4:10 AM
Tiny
DGMEADORS
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Not if in park but if it's idling in gear like at stop or in slow traffic then yes. Temp starts going up as soon as fan kicks on.
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Thursday, August 4th, 2011 AT 7:16 AM
Tiny
DANLESABRE
  • MEMBER
  • 230 POSTS
You should try flushing the radiator and putting new coolant in. Sounds like there is not enough flow because it only over heats when the engine is under load. Flushing the radiator and putting fresh coolant in will definitely help the cooling system function properly.
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Thursday, August 4th, 2011 AT 5:09 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
You may need to get the radiator core cleaned, just a flush may not dislodge sediment clogging core tubes.
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Sunday, August 7th, 2011 AT 10:28 AM

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