I have a 91 civic dx and have the following problem..when the car is first started in the morning (hot or cold day) the car idles perfectly, but once you drive the car it will hesitate violently-only when accelerating. After about 15 minutes of driving this "bucking" will stop and the car will run excellent. I have always thought it was a fuel problem, but after reading some of the old posts, i don't know what to think. Please help

 

Maybe your TPS, or a bad plug wire? Could be a few things, any codes?