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Chevrolet
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1991
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Lumina Z34, Standard
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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/Codes - 2.5L
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Diagnostic Flow Charts For Codes: 13 To 55
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Code 35, IAC Idle Speed Error Using Tech I
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PCV Valve
PCV Valve
An incorrect PCV valve may cause incorrect idle speed.
Fig 1: Code 35, Schematic, IAC Idle Speed Error Using Tech I
Fig 2: Code 35, Flow Chart, IAC Idle Speed Error Using Tech I