Mechanics

WHY DOES MY CAR IDLE ROUGH

1995 Mercury Mystique • 140,000 miles

When ever I stop at a light or stop sign my car shakes bad but when it is in park or neutral it doesnt shake what could the problem be. I was thinking of getting a tune up would this fix the problem because I was told it might
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The fih
October 12, 2012.



Could be a vacuum leak. Could be a missfire from plugs.

Is the check engine light on?

Roy

ASEMaster6371
Oct 12, 2012.