RPM are too high at an idle 1,000

2002 TOYOTA SIENNA
165,000 MILES • 3.0L • 6 CYL • 2WD • AUTOMATIC
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TOMMY KORAKIS
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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.
Nov 5, 2018 at 2:49 AM
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ASEMASTER6371
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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
Nov 5, 2018 at 4:38 AM
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TOMMY KORAKIS
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Thanks Roy.
Nov 5, 2018 at 1:02 PM
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ASEMASTER6371
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You are welcome.

Always glad to help.

Roy
Nov 5, 2018 at 1:46 PM