engine will not idle up when i push throttle pedal. i cleaned the iac and the maf sencor, removed the valve cover and checked tdc. on the comp stroke and removed distributor cap and checked timing all ok. also i replaced the spark plugs. i have spark but i wander if it is a bad distributor not advancing the engine shutters and wants to shut down. any help would be great.

Welcome to AF!

Check for a vacuum leak in the intake and PCV system.