Eng Check Light

[valzareh]

ITs weard .. My 85 L-type supra has the eng check light come on at 70mph and when you hit 80 mph it will go out .. I was thinking of o2 sensor ??

any ideas

[dannymk2]

have you tried pulling the code? its most likely o2 sensor related. i had the same issue. mine was due to an exhaust leak at the head. i fixed the leak and the light never came back.