MERCURY COUGAR SHAKE

This Ve­hi­cle Is In Fairly Good Con­di­tion. 2 Weeks Ago, I Ac­quired It Af­ter Hav­ing The Fan Mo­tor Changed, The Back Right Tire Re­placed...

Af­ter I Un­plug Egr Valve The Car Runs Smoother And Bet­ter, No Jerk­ing As Be­fore, But When Drive In Some Speed And Press The Ac­cel­er­a­tor...

My Mer­cury Cougar Mo­tor Shakes While Dri­ving And Idling? What Could Be Wrong, Any Sug­gest­ings. Thank You. It Shakes More While Dri­ving The...