chenning

David - Thanks for your reply. I have been using mid-grade (89) unleaded. Should this make a difference? Chris

RE: 2001 GS 300 HI all. I just bought my first Lexus and I absolutely love it. I've noticed one problem with it. When I need to gitty up in a hurry from any cruising speed the engine seems to stall, it stops accelerating and the tachomoter stays still - after stepping hard on the gas pedal. IT's almost as if there is a limit on the tachmoter that it won't let me wind it up high every once in awhile when I need to pass someone. I have to back down on the gas, let it 'catch' itself then retry. IT is really a deterrant from those times when need to speed up in a hurry and I am sure that this is not normal. Any suggestions would be greatly appreciated.