What would cause a muffler rattle, car shake while driving and engine misfire at higher speeds?

Tiny
SSCHUETTE
  • 2001 MAZDA TRIBUTE
  • 95,000 MILES

The problems first appeared after driving through some low spots in the road filled with rain and then disappeared completely for several days before re-appearing while on a longer drive today under normal driving conditions.

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Monday, November 21st, 2011 AT 12:00 AM

2 Replies

Tiny
RIVERMIKERAT
  • MEMBER

Muffler rattle could be a loose heat shield. Car shake is most likely a tire/wheel out of balance. Misfire could be bad plug or wire, or a weak valve spring. Check engine compression.

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Monday, November 21st, 2011 AT 12:05 AM
Tiny
MHPAUTOS
  • EXPERT
  • 30,773 POSTS

Get under the car and thump the muffler, if it rattles you will have a collapsed baffle or internal pipe, this may also cause a back pressure in excess of normal allowances causing the tune problem as well.

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Monday, November 21st, 2011 AT 12:06 AM

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