2002 Mercedes Benz SLK230 vibration in car when stopped

2002 MERCEDES BENZ SLK230
115,000 MILES • 4 CYL • 2WD • AUTOMATIC
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JAMAXWIN
  • MEMBER
  • 2 POSTS
My car runs fine, but vibrates loudly when I stop at a light. It only vibrates in drive, not reverse, but it does it every time I stop. I replaced 2 of 3 engine mounts (didn't replace the right one), but the vibration continues. Please help.
Jan 4, 2010 at 12:21 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Engine misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
Jan 4, 2010 at 5:10 PM
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