Idle Speed & Mixture: Notes

WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, and 1995 Dodge Caravan. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Mixture is controlled by PCM. No adjustment is possible.

Idle speed is controlled by Idle Air Control (IAC) motor. PCM adjusts engine idle speed through IAC motor to compensate for engine load or ambient condition changes. IAC motor is located in throttle body air by-pass passage used to provide air during engine idle. PCM uses inputs from various sensors to determine IAC motor position and change idle speed. Curb idle speed is not adjustable. See TESTS W/CODES - 3.0L article in the ENGINE PERFORMANCE section for diagnosis of incorrect idle speed.