hi i recently felt my car shaking between 16mph-23mph (2nd gear), idk whats wrong. i recently changed my fuel pressure regulator and it reduced the shaking quite a bit but i still feel it. help please

 

bring it to a mechanic. there's a million things it could be, and I'm guessing you don't know where to even begin looking to provide us with a whole lot more information to help you narrow it down.

only thing I could suggest is check your tire pressures and make sure the lugnuts are all torqued to 80-85 ft/lbs.

and if you have a check engine light, get it scanned and give us the specific trouble code[s] that are stored

 

i pretty much did my whole tune up, and just recently got new tires. i do know for a fact i need to do my tranny fluids, new brakes, and get my rotors turned.