I own a 1997 sc300 with 155k miles on it and recently the engine light came on but I didn't notice any performance lost in the car, like no sluggish movements or shaking. So I checked all my fluids (engine,p/s,break,coolent) and they all seem fine. I brought to a shop and they told me they couldn't find anything wrong so they resetted the computer. now a week later the engine light came back on. has anybody have any problem like this before?