RPM are too high at an idle 1,000

2002 TOYOTA SIENNA
165,000 MILES • 3.0L • 6 CYL • 2WD • AUTOMATIC
Avatar
TOMMY KORAKIS
  • MEMBER
  • 2 POSTS
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
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
ASEMASTER6371
  • CAR REPAIR CONTRIBUTOR
  • 52,796 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
Nov 5, 2018 at 4:38 AM
Advertisement
Avatar
TOMMY KORAKIS
  • MEMBER
  • 2 POSTS
Thanks Roy.
Nov 5, 2018 at 1:02 PM
Avatar
ASEMASTER6371
  • CAR REPAIR CONTRIBUTOR
  • 52,796 POSTS
You are welcome.

Always glad to help.

Roy
Nov 5, 2018 at 1:46 PM