My 2003 Lincoln LS sometimes misfires or bucks while driving.......What's the cause of this?

A faulty o2 sensor will not cause a misfire. This is exhaust related, which is more than likely due to a clogged catalytic converter, which was is likely due to your misfire leaving unburned fuel to go to the exhaust, which clogs the catalyst. You likely smell a rotten egg type smell in the car at times. Your misfire is likely another cylinder. The OBDII codes are not great at finding the cylinder of the misfire in this particular car. Your best bet is to replace all 8 coils and plugs at the same time with OEM Motorcraft coils only. One bad coil makes the others work harder, meaning if you replace them one at a time, you will be constantly chasing a misfire.

p0302 is a misfire code at #2cyl,may be cause of other codes,?p210-codes have 5

My car is a 2003 ls V6 keeps getting a misfire and no acceleration when pressing the gas. I've done changed the map sensor, new throttle body, coul packs and spark plugs 3 times and just recently re changed them once again and noticed the spark plug holes were completely filled with water. Anyone with possible answers would be helpful

Is you "check engine" light on ? If it is you can take it to most of your local auto parts store and have them pull diagnostic trouble codes (DTC's) for free which may help narrow down the cause of it shaking. Not sure exactly what you are saying. Do you seem to have hesitation when pressing down on the gas to move ? As you are driving is there or does there seem to be a "stutter" once in a while like a chug. I say this because Ford products (your engine V6 or V8) have a separate coil for each spark plug that basically sits on top of the engine. Since your vehicle is a little older the coils go out on them because of the heat which causes a misfire which would cause shaking like you described. A misfire code would be in the P0300's area on the list of DTC's. I may be way off base but this is a common thing that happens with this coil on plug system. Hope this information helps....

Could be a spark plug, coil, or injector among other things.

change coils (cops) all eight......$150.00 on ebay....

PO 316 -- is a misfire on the first 1000 revolutions

You get that & sometime a lot of other codes you ignore

You may or may not have PO301 thru PO308 codes
The last # is the cylinder

1,2,3,4 Pass Side
5,6,7,8, Driver Side

Front to back

All you can do is buy one new coil and try it in
a cyl with a code or you may have to walk the
new coil from one cyl to the next and drive few
days in between.

The other choice is a repair shop with an oscilloscope
and the inductive coil pick up adapter

Misfire from one or more of your cylinders, Have the code scanned. Most likely going to need coil(s) and spark plugs to fix the problem.

try disconecting the battery for 5 mins see if it reeboots computer.

you most likely have a coil pack going bad.
This can cause an electrical spike and cause computers to reboot just like your home PC in and electrical storm,that is why the transmission acts as if it does not know which gear to go in.
You need to have someone hook up a scan tool and retrieve the trouble codes and see if there is a miss-fire code stored in memory.