1999 Ford Mustang 3.8

Sounds like your vehicle just needs a good cleaning and blowing out. First check air filter and replace if necessary clean throttle with throttle body cleaner change fuel filter if have not done so in a while add fuel injector cleaner to gas tank and take vehicle out on the road and hit the passing gear a few times this will blow out the gum and carbon build up in the engine.

Forgot to mention air filter is new and have also cleaned the throttle body. Have also ran injector cleaners as well. The issue happened a few months back I changed the plugs, wires, coil pack and all seemed good then today the issue started happening all over again. Its giving me a headache lol

Have you changed the fuel filter ?

This is one thing that I have not none. When you nail the gas you get some black smoke as well but only when putting it on the floor almost like its getting to much fuel in the engine.