Hey I have a 1991 LS 400. Recently my o/d light has been flashing on and off when I have been driving. It only seems to come on when I'm in a low gear and trying to accelerate. Also, when I try to give it gas sometimes it hesitates and feels like it doesn't want to accelerate too quickly. This is my first lexus and Ive had the car for about 7 months now and this is the first problem I've had with it.