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Vacuum diagram

Tiny
BRICE THIBODEAUX
  • MEMBER
  • 2003 KIA OPTIMA
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 159,000 MILES
I have high idle replaced all the vacuum lines EGR valve and idle air control valve did not do electrical test or resistance for anything. I did clean the and take replace the 02 sensors up-and-down stream and the exhaust manifold gasket.
Monday, October 26th, 2020 AT 9:22 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Hi,

I have attached the vacuum schematics for the vehicle. Have you checked the PCV system? See pic 3 regarding the system. Also, here are two links. The first explains how to find a vacuum leak and the second helps with high idle issues.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

https://www.2carpros.com/articles/engine-idles-too-high

_________________

Let me know if this helps or if you have other questions.

Take care,
Joe
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Monday, October 26th, 2020 AT 1:07 PM

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