it also shifts hard when shifted from park into drive
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1994 Mercury Sable Question: why does it shake horribly off and on while driving or while at a red light?
Answer #1Greg's Orange Auto (13485 Answers) , Orange, CA - (714) 361-9386globalhelper August 09, 2013, 06:14Master
poss misfire or other issues seek a diag and est to confirm
Replymirastes, August 09, 2013, 13:22Rookie
Answer #2mrfordman August 09, 2013, 09:19Journeyman
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.
Replymirastes, August 09, 2013, 13:24Rookie
uummmm...???? ok, I guess ill be getting a book so I can figure out what and where that it... :)