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Need ideas, suggestions and or advise. Bad vibrations!

Tiny
BIKER/WRENCH
  • MEMBER
  • 1994 PONTIAC FIREBIRD
  • 220,000 MILES
Bad vibration that appears to be engine related. Condition present while sitting still with engine at idle and worsens with higher rpms. Replaced transmission and torque convereter with salvage yard unit for other problems. Inspected both engine mounts and replaced one torn engine and trans mount. Flexplate inspected while trans out. No cracks or warping. Harmonic balancer appears o.E. But in good condition. Reminds me of vibration such as rockers being adjusted too tight but customer states that valve covers never been off. Any ideas, any common problems and or fixes or similar complaints. Can normal engine wear create above condition.
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Friday, December 23rd, 2011 AT 4:26 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The crankshaft could be bent
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Friday, December 23rd, 2011 AT 4:39 AM
Tiny
94FIREBIRD
  • MEMBER
  • 1 POST
Hi. I have a similar problem with my 94 Firebird but only when Idling. It seems to have gotten better with the addition of Power Steering Fluid but not fixed. I think my issue is Power Steering Related and not Engine or Crankshaft. I will keep you updated.
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Sunday, January 1st, 2012 AT 5:34 PM

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