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RPM are too high at an idle 1,000

Tiny
TOMMY KORAKIS
  • MEMBER
  • 2002 TOYOTA SIENNA
  • 3.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 165,000 MILES
In April 2018, I changed the Idle Control Valve. Everything was working fine. The other day while I was seated in the vehicle with engine running, suddenly the RPM went to 1,800-2,000 at an idle.
The check engine light gave a code of P0440 EGR valve. I replaced the valve with the same results high RPM.

I replaced the Idle Control Valve and the RPM sit at 1000-900. However the RPM do fluctuate. While I am driving the vehicle the RPM increase abruptly. You could hear at an idle the RPM increase and decrease.
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Monday, November 5th, 2018 AT 2:49 AM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning.

Did you clean the throttle body plate of all carbon? Build up of carbon will not allow the plate to close giving you a high idle.

Roy

https://www.2carpros.com/articles/throttle-actuator-service
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Monday, November 5th, 2018 AT 4:38 AM
Tiny
TOMMY KORAKIS
  • MEMBER
  • 2 POSTS
Thanks Roy.
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Monday, November 5th, 2018 AT 1:02 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Always glad to help.

Roy
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Monday, November 5th, 2018 AT 1:46 PM

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