kenneth paulson Posted August 26 Share Posted August 26 anybody have any ideas. i have a 79 trans am with olds 403 and engine vibration at all rpm. more noticable between 1200 and 2000 rpm. Link to comment Share on other sites More sharing options...
alsancle Posted August 26 Share Posted August 26 When idling or when driving? Link to comment Share on other sites More sharing options...
avgwarhawk Posted August 26 Share Posted August 26 Check the crank harmonic balancer has not shifted it's ring. Link to comment Share on other sites More sharing options...
Pfeil Posted September 2 Share Posted September 2 (edited) Also, if it's an automatic check the flex plate for cracks loose bolts. Edited September 2 by Pfeil (see edit history) Link to comment Share on other sites More sharing options...
EmTee Posted September 4 Share Posted September 4 Any work done recently? Link to comment Share on other sites More sharing options...
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