Hello everybody. I have an issue I can't figure out. I have an 89 foxbody with edelbrock heads. F303 cam. Cobra intake. Shorty headers. It'll crank and drive fine. After about 20 minutes of driving and sitting at red-light it will seem like something kicks on and the idle gets super rough. Doesn't seem to affect during driving though, but it will idle bad enough to where it will sometimes die.