1999 Mercury Marquis clatter noise

1999 MERCURY MARQUIS
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FRANKSGURL
  • MEMBER
  • 1 POST
Noises problem
1999 Mercury Marquis Two Wheel Drive Automatic 133000 miles

i have a 99 and it has a lite clatter sound when i am up above about 20mph or on hills.
Sep 30, 2009 at 3:12 PM
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BMRFIXIT
  • ✓Experienced Mechanic
  • 19,053 POSTS
Check it for tune up
use a better octane gas
check timing
Oct 4, 2009 at 1:00 PM
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