Blazer 2WD V8-350 5.7L VIN L 4-bbl (1982)
Idle Speed: Adjustments
Fast Idle Speed
PRELIMINARY PROCEDURES
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Warm engine to normal operating temperature (upper radiator hose hot).
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Turn "OFF" all accessories, including A/C.
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Check Timing (adjust if not to specification).
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Connect tachometer.
CAUTION: Exercise care not to ground the TACH terminal (which is located next to the BAT connector) as this may damage the Electronic
Control Module (ECM) or coil.
ADJUST FAST IDLE SPEED
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Transmission in "PARK" or "NEUTRAL".
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Disconnect and plug EGR vacuum line.
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Place cam on "HIGH" step.
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Turn fast idle screw to obtain specified rpm. See: Specifications
