Hi and welcome.
Go to relevant forum..... Engine, Electronics, bodywork etc, start new thread.... tell us what the issue is...post.
Don't worry if the forums don't seem to fit exactly, we can move if needed (and often do)
Don't forget to add vehicle, engine, fuel, age and give us as much detail as you can.
Nothing worse then a post that says "Help, my car making funny noises".....duh, what car, what noise, where from etc etc!