Chevrolet Cobalt Service & Repair Manual: Idle Speed & Mixture Adjustments

Idle speed is controlled by the ECM/PCM. No adjustment is required.

Curb Idle Speed

Curb idle speed is controlled by the ECM/PCM. No adjustment is required.

Fast Idle Speed

Fast idle speed is controlled by the ECM/PCM. No adjustment is required.

Mixture

Fuel mixture is controlled by the ECM/PCM and is not adjustable.
    Compression Pressures
    1. Ensure engine is at room temperature and battery is fully charged. 2. Disconnect wiring from ignition module and remove spark pl ...

    Fuel Injection
    ...

    See also:

    Chevrolet Cobalt Service & Repair Manual. Malfunction Indicator Lamp, Diagnosis & Testing
    The Malfunction Indicator Lamp (MIL) is located on the Instrument Panel Cluster (IPC). The MIL informs the driver that an emission system fault has occurred and that the engine control system requires service. The Engine Control Module (ECM) monitors the MIL control circuit fo ...

    Chevrolet Cobalt Owners Manual

    Chevrolet Cobalt Service Manual


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