GMC Safari Engine Idle Rough

My Gmc Safari Van's Has A Rough Idle, Engine Vibration, When In Drive With The Brake On. This Condition Get Worse When The Air Conditioner...

I Just Replaced The Mass Flow Air Sensor And The Throttle Position Sensor And A New Air Filter And Checked Air Intake Ducting For Cracks And...

4.3 Has Idle Issue. Rough Idle/shake In Gear. First Symptoms Were Only When A/c On. Now Most Of The Time, But Much Worse With A/c On. Load...

My 1993 Safari 4.3l Vortec Idle Is Fine When Is Cold When It Has Warmed Up It Is Rough It Dose Not Quit After Replacing Leads Rotor And Cap...