You can find a brake booster for a 1989 Lincoln Mark VII at several places. Auto parts stores like AutoZone, O'Reilly Auto Parts, or NAPA may have them in stock or can order them for you. Additionally, online retailers such as RockAuto, Amazon, or eBay often have a variety of options available. For used parts, consider checking local junkyards or specialty classic car parts suppliers.
Not true, they have power brakes.
you need a new brake booster
Under the hood. Drivers' side attached to the brake booster on the firewall
You have to remove the Master Cylinder, disconnect the rod that is connected to the brake pedal and remove the bolts holding the Power Booster on. Connect in reverse order.
right above the brake pedal on the left
The 1989 Lincoln Mark VII typically uses a 3/16-inch brake line for its hydraulic brake system. However, it's always advisable to verify with a repair manual or parts supplier, as variations can occur based on specific configurations or modifications.
The power brake booster is probably at fault.
The brake booster is in the standard location, but it doesn't look anything like a traditional booster/master cylinder. It's a long two or three piece aluminum unit called the actuater in the shop manual. The plastic brake fluid tank is bolted to the top side of the unit. They're also obsolete and getting very expensive to replace. The manual claims there are no serviceable parts inside! most failures of power brake booster is the booster relay 23.00 dollars from dealer located near booster on firewall
yes, the computer is located in the trunk on the underside of the package shelf
Remove the hydroboost unit from the firewall and replace it with the vacuum assisted booster. If you are careful you may be able to do this without disconnecting the brake lines. You will need new powersteering lines and find a vacuum source for the new booster.
It is possible that a Mustang transmission will fit in a Lincoln Mark VII. It is likely that the clutch plate and the pilot bearing will have to be changed.
the anti-lock booster is bad. you will still have brakes but they will feel like manual brakes. the brake system as well as the air bag suspention systems are only designed to last about seven years. you can buy the repalcement booster at any auto parts store however be prepared to spend some money.