My truck overheated I let it cool down then filled it up with coolent. its shaki

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They truck over heated then I filled it up with water and coolent it ran fine I was on a 75 mph highway on a 30 min drive. I didn't notice any shaking but now after it heating up again I noticed a leak in the radiator and now it has a little shake when I am driving and at idle. Does anyone know what could be causing it to shake?