It is a possibility that the hydraulic suspension has gone bad...It is a problem with that year and is best to have removed.
A faulty fuel relay can cause a 1999 Lincoln continental to stall. If the relay is not properly reading the fuel it will turn the car off.
It means check your transmission, why not start with the oil.
I have the same problem i say its too old im throwing it away
Raise Up was created in 1999.
spark location on a 1999 Lincoln continental
Lincoln LS was created in 1999.
On a 1999 Lincoln Continental : The button for the moon roof is in the overhead console
How to replace water pump in Lincoln continental 1999
( yes ) a 1999 Lincoln Continental is front wheel drive
Does it it start sometime and not others? Does it click when you turn the ignition to start but doesnt start? Then its probably bad. Make sure your battery is fully charged first.
Try changing your ignition coil....they're a common problem with hondas.
According to the 1999 Lincoln Navigator Owner Guide ( 5W-30 )