The car is worn out.. Get rid of it. If you do a private sale be SURE
its to someone over 18. Have a disclosure of known problems SIGNED
by buyer. Sell as " PARTS CAR ONLY".
Or sell to junk yard. In N.H. they pay $200 for almost anything.
Go find a non fleet Crown Vic. They have very few problems that
are hard to find & expensive. MPG not bad at 28 MPG HWY. Had
I had two that went 250 K / 15 yrs before the rust got them.
No major problems, ran great till the end.
good luck
73 Zeno
LFOD !