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Porsche
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1989
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928 CS V8-4957cc 5.0L
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Repair and Diagnosis
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Powertrain Management
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Emission Control Systems
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Technical Service Bulletins
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Emission Control Systems: Technical Service Bulletins
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By Symptom
Fuel/Ignition Modules - Use of Aftermarket Microchips
All Technical Service Bulletins
VIN, Certification, & Emission Label - Availability
VIN, Certification & Emission Labels - Availability
VIN Plate, Certification & Emission Label - Availability
Fuel/Ignition Modules - Use of Aftermarket Microchips
Ignition Monitoring System - Diagnosis
Exhaust System - Sulfur Like Smell