The dash and fire wall need to be taken out.
600.00 to 900.00
The 1989 Lincoln Continental brake booster is located on the firewall in the engine compartment. The brake booster will be on the drivers side of the firewall.
== ==
replace it
You might need a new thermostat or heater core.
the Lincoln continental shares the same dash with the mark series. The continental had a 2.3 turbo as an available option.
Try purchasing this bookhttp://www.themotorbookstore.com/lincoln.html
right above where the oil filter is located
Would have been built for R12, can be converted to R134a.
lincoln continental 1989-1993 and cadillac brougham in 1993
It's a big job! Get a manual on your car to do it right.
The entire dash and the HVAC housing.