Buick Century Engine Idle Rough

Engine Seem To Misfire At Idle And The Engine Service Light Is On And The Computer Code Is Po171 And P1404 So What Is Causing The Engine To...

99 Buick Century, I've Posted Questions Before. My Problem I'm Wondering If It Can Be Placed On My Ignition System, Via Ignition Switch/key...

1998 Buick Century Mileage: 72,000. If You Can Successfully Pinpoint This Problem, You Should Be President. The Problem Is Rough Idle....

Starts Ok, But Idles Rough And Stumbles On Acceleration When Cold.this Condition Improves Somewhat With Warm Engine, But Still Idles Rough...

I Have 1994 Buick Century 83000 Miles. When I Start The Car And When Its Cold It Will Idle Rough And It Wants To Turn Off. Idles Very Low...

Started Out Trying To Cure A "miss" Rough Idle,thought A Tuneup Would Do The Trick, But Now It Will Not Run At All. I Changed The...

Engine Performance Problem 1989 Buick Century 6 Cyl Front Wheel Drive Automatic My Car Is Hard To Start And When It Does It Idles...

I Recently Bought A 1987 Century 3.8l Auto With 49k. The Car After Running Fine Did Not Want To Stay Running Some Times. Engine Scanner...