NO
passenger side in valve cover.
The starter on a 1989 Lincoln Town Car is located on the passenger side of the engine. You should see it positioned by the engine oil pan.
Under the hood on the passenger side.
it is up by the windshield on the passenger side
I was looking at the 1999 Lincoln Town Car Owner Guide and it does not show anything about it having an air filter for the passenger compartment from the factory
Under dash on passenger side.
Lower rear end of engine - usually passenger side
At the front of the engine compartment on the right side ( passenger side )
down on the passenger side engine or follow the positive side on your battery
more than likely on the rear side of the passenger valve cover.
On the passenger side, behind the battery, above the fender.
PASSENGER SIDE FRONT OF REAR WHEEL IN FRAME RAIL