rchua Posted February 6, 2003 Share Posted February 6, 2003 I have a 91 LS400. Can anyone tell me what it means when the O/D OFF light comes on for a split second then goes off. It does that sporatically when I drive. It has been doing this recently. Thanks for any advise! Quote Link to comment Share on other sites More sharing options...
UCF3 Posted February 6, 2003 Share Posted February 6, 2003 Question. When the Overdrive light comes on, watch the RPms to see if the Revs increase. If they do, then you may have a chip problem, but I'm not that sure. If your RPMs are not normal to start with, like while driving at speeds higher than 50 and the RPMs are at 2900+ your overdrive chip will need to be replaced. If it doesn't go up, then it's just a bad connection. Quote Link to comment Share on other sites More sharing options...
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