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Home >> Ford >> 1998 >> Econoline E150, 5.4 L >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing - 5.4L >> Idle Speed & Ignition Timing >> Idle Mixture Adjustment

Idle Mixture Adjustment

NOTE: Idle mixture is not adjustable. If idle mixture is incorrect, see appropriate article:

For gasoline vehicles, see TESTS W/CODES - 5.4L GASOLINE .

For CNG vehicles, see TESTS W/CODES - 5.4L CNG .