Jeep Cherokee Engine Shakes

I Have 2002 Jeep Grand Cherokee Se. While I'm Driving And Whenever I May Have To Slow Down Or Stop..the Engine Starts Blinking And The Car...

My Motor Is Shaking. When I Start It Up Everything Is Okay I Can Drive About A Mile Or Two And When I Hit On My Brake My My Motor Begins To...

Not Always But Sometimes When You Take Off A Horrible Screaching Sound Starts And Then After A Few Minuets It Stops. Also When You Start It...

While Waiting In Line At The Gas Station When I Presed On The Aselator Pedel The Engine Began To Shake With No Car Movement But It Idled Ok...