1990 Chevrolet Lumina 3.1L Poor Idle Quality, Surge, Misfire

Asked by Dec 31, 2016 at 08:40 PM about the 1990 Chevrolet Lumina 4 Dr Euro Sedan

Question type: Maintenance & Repair

1 Answer


Bad TPS throttle position sensor or IAC Idle air control valve or throttle body dirty and or injectors need cleaned or rebuilt, bad spark plugs and or plug wires, vacuum leaks, PCV clogged and need cleaned.

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