Rick George Posted June 18, 2008 Share Posted June 18, 2008 as the topic says. i notice while cruising i get this occational drop in power its only a short drop and picks back up strait away. so i pulled over and slowly moved the revs up while in Nutural... just after 1500 revs and to about 2500rpm i get this vibration through the car... if i hold it there i occationally get a a big drop in revs like a engine cut.... and ideas whats causing this? 1990 LS400 150000kms Sock standard Quote Link to comment Share on other sites More sharing options...
eatingupblacktop Posted June 18, 2008 Share Posted June 18, 2008 Could be fuel related, like a filter or pressure regulator, or a couple of cylinders cutting out. Quote Link to comment Share on other sites More sharing options...
chilkoot Posted June 18, 2008 Share Posted June 18, 2008 i got seat vibrations at those RPMs in park when I had bad motor/trans mounts, but it was not really noticeable at speed, and my cruise control was just fine. I'm throwing my .02 on motor mounts Quote Link to comment Share on other sites More sharing options...
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