Buick Riviera Engine Idle High

Engine Performance Problem 1989 Buick Riviera 6 Cyl Front Wheel Drive Automatic Mar Riv Starts With A High Idle. Sometimes It Comes...

I've Asked About This Problem Before, But Now I Have New Symptoms. When I Did Get It To Idle Okay, I Then Unplugged The Idle Air Control...

I Asked About This Before, And Was Advised That The Throttle Position Sensor (tps) Was Probably The Problem. That Made Sense Because The...

When I Start The Car, The Idle Jumps Up To About 1700 Rpms And Just Slowly Rises To About 2000. When I Give It A Little Gas, It Comes Down...