ok heres my scenerio i have t type engine in my s10 got it running runs good it was fine thursday then i took it to the track on the way home i noticed something wierd like when you stab it it pulls great then just acts like someone turns the key off then i let up a bit and bm its running fine... whats the deal?i do have older gas in it could it be the knock sensor shutting it down for that brief second but why when i let off the gas does it run fine though??