Carribean Sthomas Posted November 3, 2012 Share Posted November 3, 2012 My lexus Ls tends to idle erraticly some time when i come to a full stop the tach keep going up an down like it wants to stall.what is causing this? Quote Link to comment Share on other sites More sharing options...
steve2006 Posted November 5, 2012 Share Posted November 5, 2012 Vacuum leak on intake, throttle body needs cleaning, IACV needs cleaning/servicing and several other causes. Quote Link to comment Share on other sites More sharing options...
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