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Porsche
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1987
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928 S4 V8-4957cc 5.0L
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Repair and Diagnosis
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Powertrain Management
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Ignition System
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Testing and Inspection
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Symptom Related Diagnostic Procedures
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Erratic Idling
Erratic Idling
1.
Faulty temperature sensor No. 2.
2.
Ignition system
.