Mike's Workshop Manuals
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1992
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Lumina APV 3.1 D
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Engine Performance
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Engine Controls - Adjustments
Engine Controls - Adjustments
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Engine Mechanical
Valve Clearance
Ignition Timing (Gasoline)
4-Cylinder Ignition Timing
2.5L (VIN E)
V6 Ignition Timing
All Models (Except 3.8L VIN L)
V8 Ignition Timing
All Models (Except Diesel)
Injection Pump Timing (Diesel)
6.2L & 6.5L
Idle Speed & Mixture
Idle Speed & Mixture (Gasoline)
Notes
Controlled Idle Speed Check
Minimum Idle Speed Adjustment (7.4L Only)
Idle Speed (Diesel)
Curb Idle
Fast Idle
Throttle Position Sensor (TPS)
TPS Adjustment ( Gasoline)
Notes
2.8L (VIN R)
TPS Adjustment (Diesel)
6.2L Light Duty (VIN C)
6.2L Heavy Duty (VIN J)
WASTEGATE Actuator Adjustment (Turbo)
Notes
Engine Controls - Adjustments
4.3L PFI (VIN Z)