Tuesday my 01' Elantra Overheated. I lieft it on the road until last-night. I drove it 7 miles. Before driving I filled with water. Car got hot because of a crack in the plastic top of radiator. When I got it home it was just below the TOO hot mark. I let it sit over night. Today when I went to take to the dealer for repair ( out of warranty ). I started it and it shakes? Now what is wrong. Going tomorrow to have radiator replaces along with thermo and hoses?

Any Idea why the shakes?

water on electrics--but most likely head gasket.