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Home >> GMC >> 1990 >> Jimmy Full Size V8-350 5.7L >> Repair and Diagnosis >> Powertrain Management >> Tune-up and Engine Performance Checks >> Idle Speed >> Specifications >> Controlled Idle Speed / IAC Counts >> Under 8500 GVW, Controlled Idle Speed / IAC Counts

Under 8500 GVW, Controlled Idle Speed / IAC Counts

Under 8500 GVW, Controlled Idle Speed / IAC Counts
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Idle Speed IAC Counts
Note: Add 2 counts for engines with less than 500 miles. Add 2 counts for every 1000 ft above sea level.
Manual Transmisssion Neutral 600
Note: Let engine idle until proper fuel control status is open loop.
5-30
Auto Transmission Drive 525
Note: Let engine idle until proper fuel control status is closed loop.
5-30