Hello I have a 90 automatic 5.0. My problem is it stays accelerated when I let off the gas no matter my speed it does it for a couple of seconds or until I press the brake and when it does this the check engine light comes on but it turns off when I accelerate again or if I’m in idle could it be a tps because I checked it with a multimeter and the voltage went to normal as I let go but the actual engine does not or could it be a vacuum leak or something in the cruise control? I’ll try to get a video of it