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

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

Question type: Maintenance & Repair

1 Answer
59,755

enginecreator answered 7 years ago

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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