Hi. Im writing this because when my" distance till empty" feature reaches 30 it just goes blank. So im wondering how many miles I truly have left and why it never reaches 0?

Clogged catalytic converter is a possibility

ignition module , that the coil packs sit on ,was the problem on my car. had the same symptoms .ran fine till it warmed up then it started missing like crazy

You have a failed transmission, that will need to be
rebuilt or replaced with a factory rebuilt

No other fix

Try to bleed excess air on the brake line, you'll find the bleeder nip just behind the disc brake

Traditionally when the fuel light comes on you have about 1/16 of a tank left. Depending on weight in your car and weather your driving highway or in town and the speed you are driving as well as the quality of gas and how efficient your car run (MPG) on average just a few miles. I recommend you get some gas before that light comes on. Gauges are never perfect and it may leave you stranded sometime.

Please be patient it will set soon all by itself. had a friend that waited over a month of continued driving till it set,

i dont believe u heard the alternator click, im sure it was the starter,have your charging system checked.

usaly its cupped tires, This stems from not having tires rotated, Certain vehicals are also known for wheel bearing failure, This also causes same noise

There is a security feature that will allow to go for a short distance but will stop. It is basically the same as the alarm, when you lock your doors, and then shut the door as you exit, there is a red security light that will blink in the dash. If you manually unlock and open any other door besides the driver door, the alarm will go off. To disable the alarm you have to cycle the key in the driver door. The same goes for the security feature. Cycling the key in the driver door lock manually, should disable the security feature until the doors are locked again. There may be a problem with the remote if you use it instead of you key to unlock your door.

replace fuse and relay for air conditioer.