Car knocking while driving

1997 MITSUBISHI ECLIPSE
4 CYL • 2WD • AUTOMATIC
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JIBS
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  • 1 POST
why does my 1997 eclipse have a knocking sound underneath when moving?
My eclipse accelerates itself when put in neutal, why?
Jul 17, 2011 at 2:58 AM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
The knocking noise could be anything from bad suspension bushes/links to drivetrain faults and you need to verify the source.

The surging could be due to a faulty IAC or lack of coolant affecting the idling system.
Jul 17, 2011 at 3:49 AM
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