If your car has a manual speedo, it can be in it or the cable. Noises have to be heard to be correctly diagnoised.
It could be your fan shroud or radiator hose rubbing on the fan.
Your previous driving record alone is not probably cause to be pulled over. If you were driving recklessly or in violation of the law, you could be pulled over.
When you drive over a clicking bettle.
First thing to check is the fuel pump relay. IT could also be that big air clearner hose. If that is broken or cracked anywhere these it will cause over fuelling.
There would exist probable cause to pull you over if the officer had seen you driving without your lights on even if you turned them on after you saw the police car and before you were pulled over.
With probable cause, yes he can.
Check the shocks first they will squeak pretty bad when going out ( dried out seals ). Bushings will squeak but they would have to be pretty bad to do it when just pushing on the front end.
Had mine lubed and they said it was bushings.
Most likely you need a new strut
it might be a safety thing
Squeak in tires (when turning in particular) could mean low tire pressure, or bald tires.
It maybe your suspension that squeaks when ever you go over the speed bumps.