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Volvo
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1992
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940 Turbo, 4D Sedan, AW71
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Tests W/O Codes
Engine Controls - Tests W/O Codes
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Introduction
Symptoms
Symptom Diagnosis
No Start - Cold Engine
Starts But Stalls - Cold Engine
Hard To Start - Cold Engine
No Start - Warm Engine
Erratic Idle - Warm-Up
Backfiring
Incorrect Idle Speed
Hesitation - Acceleration
Hesitation - Coasting
Knocking
Engine Misfire
Insufficient Engine Power
Poor Fuel Economy
EXCESSIVE HC & NOx
INTERMITTENTS
Intermittent Problem Diagnosis
Test Procedures
Intermittent Simulation