Thread: check engine light only when under a quarter tank of gas

Thanks for the replies guys.
The check engine light won't come on anymore, I let the gas get right down to where it usually is when the light will come on, I floored it on the highway a bunch of times and it won't do it anymore.
I don't know if i mentioned i just bought it a couple months ago. Anyway, I noticed yesterday there was oil leaking, I got under it and the oil filter was really loose (I turned it at least five times to tighten it!). I also put 94 octane instead of the 91 octane they have at most places. I don't know if either of these things helped the engine light from flashing (under 1/4 tank with full throttle only on highway) but it won't come on anymore.
I am still going to put new plugs and maybe wires too, also maybe a fuel filter. Any other suggestions would be appreciated. The car has 90000miles and I'm not sure whats all been done besides new tires,brakes,intake man. gasket.