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1999
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Crown Victoria V8-4.6L CNG SOHC VIN 9
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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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Technical Service Bulletins
Tune-up and Engine Performance Checks: Technical Service Bulletins
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Customer Interest
CNG Fuel System - Hard Start/DTC's Set/Low Power
CNG Fuel System - Rough Idle/No Start Condition
Engine - Spark Knock/Detonation Above 90 Degrees F.
Engine - Lean Driveability Symptoms
PCM - Rough Idle On Cold Engine Start Up
By Symptom
Abnormal wear/deterioration
CNG Fuel System - Hard Start/DTC's Set/Low Power
Customer Interest
CNG Fuel System - Hard Start/DTC's Set/Low Power
CNG Fuel System - Rough Idle/No Start Condition
Engine - Spark Knock/Detonation Above 90 Degrees F.
Engine - Lean Driveability Symptoms
PCM - Rough Idle On Cold Engine Start Up
Driveability
CNG Fuel System - Hard Start/DTC's Set/Low Power
CNG Fuel System - Rough Idle/No Start Condition
Engine - Spark Knock/Detonation Above 90 Degrees F.
Engine - Lean Driveability Symptoms
PCM - Rough Idle On Cold Engine Start Up
Erratic Operation
CNG Fuel System - Hard Start/DTC's Set/Low Power
Noise
Engine - Spark Knock/Detonation Above 90 Degrees F.
Poor performance
PCM - Rough Idle On Cold Engine Start Up
All Technical Service Bulletins
CNG Fuel System - Hard Start/DTC's Set/Low Power
CNG Fuel System - Rough Idle/No Start Condition
Engine - Spark Knock/Detonation Above 90 Degrees F.
Engine - Lean Driveability Symptoms
PCM - Rough Idle On Cold Engine Start Up