Why does my car idle rough

Tiny
THE FIH
  • 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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Friday, October 12th, 2012 AT 1:37 AM

1 Reply

Tiny
ASEMASTER6371
  • EXPERT
  • 25,554 POSTS

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

Is the check engine light on?

Roy

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Friday, October 12th, 2012 AT 2:12 AM

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