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Isuzu
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1990
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Impulse L4-1588cc 1.6L DOHC (4XE1-W)
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Tune-up and Engine Performance Checks
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Idle Speed
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Adjustments
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Idle Speed, Adjust
Idle Speed, Adjust
Idle speed
is ECM controlled by the idle air control valve and is not adjustable. Idle speed specification is 850 rpm. (900 rpm Turbo) If idle speed is out of specification, refer to
COMPUTERIZED ENGINE CONTROLS.