1994 Mercury Sable Q&A

1994 Mercury Sable Question: why does it shake horribly off and on while driving or while at a red light?

it also shifts hard when shifted from park into drive -
Answer 1
poss misfire or other issues seek a diag and est to confirm -
Answer 2
these were bad for a vacuum leak on the vapor hose from intake. runs from rear of intake, under air cleaner tube toward front of engine. -
Comment 1
uummmm...???? ok, I guess ill be getting a book so I can figure out what and where that it... :) -