I guess I'm kinda weak because I don't really have a clue how my car works. If I have to go to a mechanic... I'd just have to put on a poker face & pretend I know my stuff... hoping I don't get ripped off because the 'pistulator has come decombobbed from the torque hose' or something.
That's why I bookmarked this one a while back - still need to read it:
How does my car work?