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2000 Pontiac Grand Am harmonic balancer

Tiny
STERLING AUTO
  • MEMBER
  • 2000 PONTIAC GRAND AM
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 114,000 MILES
Hello we replaced a harmonic balancer on a 3.4, the old one was wobbling, car ran great. Put on new balancer and the car begin to buck and missfire. We put new wires and plugs. No change. Put on different coils and ignition module. Still not working took aff new balancer, same as old nothing different but wobble. No codes were thrown, put old one on engine runs great. Got part from napa will now try dealer.
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Friday, June 5th, 2009 AT 5:40 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Hi there,

I am not that familiar with these engines as I am in Australia, but if it has a crank angel sensor and the harmonic balancer has the signal vanes, this could well be your problem.

Mark (mhpautos)
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Friday, June 5th, 2009 AT 5:44 PM

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