idle gets low when engine warms up

2004 HYUNDAI SONATA
125,000 MILES
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KEVINDIFFEE
  • MEMBER
  • 1 POST
I have a 2004 Hyundai Sonata manual transmission. It is idling low and rough when the engine gets warm (it is fine when the engine is cold). It also cuts out if I am accelerating and the rpm's are around 2000 or lower. The check engine light is on. The car is not overheating but if I am sitting in traffic for awhile it does sometime rise to mid-line and slightly above. I have been putting some fuel injector cleaner in the my last few fill ups which I thought was helping but it is not consistent.
Jan 2, 2012 at 7:35 PM
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SATURNTECH9
  • ✓ASE Certified Mechanic
  • 30,869 POSTS
  • ASE Certified Mechanic
Take it to a auto parts store like auto zone and have it scanned for codes.Write the code numbers down let me know the exact code numbers not code descriptions.Lets start there.
Jan 2, 2012 at 7:44 PM
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