1999 Pontiac Grand Am motor thump

1999 PONTIAC GRAND AM
138,000 MILES • 4 CYL • 2WD • AUTOMATIC
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NUTTERBUTTER
  • MEMBER
  • 1 POST
I have a 99 grand am and when i start i+, i+ makes this thumping or banging noise until fully started and idling. It sounds like the motors bouncing around. What could be causing this?
Mar 18, 2010 at 9:48 AM
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MMPRINCE4000
  • ✓Experienced Mechanic
  • 8,548 POSTS
Start by checking the motor mounts.
Mar 20, 2010 at 1:19 AM
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