panej Posted August 30, 2002 Share Posted August 30, 2002 I have a 1992 Lexus LS 400 that drives beautifully but whenever I'm doing around 50 MPH and step on the gas a little bit to go into a lower gear, I hear this vibration or rumble. This has been happening now for about 6 months. Any ideas? Quote Link to comment Share on other sites More sharing options...
kulat Posted September 5, 2002 Share Posted September 5, 2002 I experienced the same thing on my 92 LS400. It appears that the engine is underpowered or should be in a lower gear to give you torque. Well, this maybe because u have bad fuel mixture to give you the right torquewhich will take you to a bad oxyen sensor which can tell the computer to send incorrect amount of fuel in the cylinders. Did your check engine lamp ever come on and stay on? If not well, its about to come on sometime. My oxygen sensrs are replaced and I dont feel that vibration anymore. Quote Link to comment Share on other sites More sharing options...
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