1983 doesnt have a crankshaft position sensor. you have an ignition module located on the side of the distributor.
replace keypad Mercury Marquis?
How do you replace the orifice tube on a 2000 Mercury Marquis
1993 mercury marquis
How do you replace the timing chain on a 1994 mercury grand marquis
how to replace starter on 2000 mercury grand marquis
how do you get to and replace the wiper moter on a 97 marquis
You don't, you replace or rebuild the engine.
Check out the related link for a video on how to replace a crankshaft position on a Ford Focus SE.
how do you replace the front sway bar likn in a 1999 Grand Marquis?
You have to replace the entire assembly.
how to replace the crankshaft position sensor located in a 2003 kia rio
take it to the dealer