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2005 Accent idles too high

Tiny
JOHNB
  • MEMBER
  • 2005 HYUNDAI ACCENT
  • 4 CYL
  • FWD
  • MANUAL
  • 150,000 MILES
Auto Zone got a code from my computer that said my idle air control valve was bad so I replaced it but my car still idles at 2000rpms and my check engine light is still on.
What else could it be if the code says idle air control valve? Could my old IAC still be good?
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Sunday, May 1st, 2011 AT 12:40 AM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Dirty IACV passages, Vacuum leak, wiring and computer problem-CEL On -is it for the IACV?
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Sunday, May 1st, 2011 AT 8:24 AM
Tiny
JOHNB
  • MEMBER
  • 7 POSTS
Autozones obd computer said the code was for the IAC. I replaced the IAC and now Autozone says the code is for the throttle position sensor. Where would I check for vacuum leak?
The idle gradually went up over a couple months. Not all at once.
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Sunday, May 1st, 2011 AT 2:05 PM
Tiny
JOHNB
  • MEMBER
  • 7 POSTS
Actually there are two codes now. One for the IAC and one for the throttle position sensor.
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Sunday, May 1st, 2011 AT 2:06 PM
Tiny
JOHNB
  • MEMBER
  • 7 POSTS
I replaced the throttle position sensor and still CEL is on and idle is very high.
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Sunday, May 1st, 2011 AT 4:04 PM
Tiny
JOHNB
  • MEMBER
  • 7 POSTS
The problem was a 3 inch vacuum line coming out of the back of the valve cover running to the intake.
Thank you!
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Sunday, May 1st, 2011 AT 7:05 PM

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