2002 Mitsubishi Galant idle

Tiny
GALANT1987
  • MEMBER
  • 2002 MITSUBISHI GALANT
  • 4 CYL
  • FWD
  • MANUAL
  • 12,935 MILES
My car seems to idle by itself before I even push the gas what could this be
Monday, October 6th, 2008 AT 2:59 PM

3 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Hi galant1987,

Thank you for the donation.

The idling speed is too high and the ECM is trying to compensate so it keeps surging up and down.

The idling is controlled by the Volume Airflow (VAF) sensor and it is this item that is faulty or out of adjustment. Another possibility is vacumn leakage.

Is the Check Engine Lamp showing?
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Tuesday, October 7th, 2008 AT 10:38 AM
Tiny
GALANT1987
  • MEMBER
  • 2 POSTS
No the check engine light is not on at all
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Tuesday, October 7th, 2008 AT 1:34 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Hi galant1987,

With AC off, adjust the idle adjust screw to lower the idling rpm and see if it solves the proble.
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Tuesday, October 7th, 2008 AT 2:05 PM

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