If your parking brake isn't working correctly, the problem isn't a matter of adjustment. Instead, you'll need to troubleshoot the electronic system itself. Possible causes include:
* Low brake fluid: Check your brake fluid level in the master cylinder reservoir. Low fluid can affect the entire braking system, including the parking brake.
* Faulty parking brake switch: The switch might be malfunctioning, preventing the system from engaging properly.
* Problems with the parking brake motor: The electric motor that actuates the calipers might be failing. This is a common point of failure.
* Worn or damaged brake pads: Worn rear brake pads will reduce the effectiveness of the parking brake.
* Electrical issues: A fault in the wiring or control module can disable the parking brake.
* Corrosion in the system: Corrosion in the calipers or other components can interfere with the system's operation.
Troubleshooting and Repair:
You should not attempt major repairs yourself unless you're experienced with automotive electrical systems and braking systems. These repairs often require specialized tools and a good understanding of the vehicle's electrical diagrams.
Instead of trying to adjust it, follow these steps:
1. Check the brake fluid level: This is the easiest thing to check first.
2. Have the system professionally diagnosed: A qualified mechanic can use diagnostic tools to pinpoint the problem. This is the recommended approach. They can accurately determine if it's a simple fix (like a bad switch) or a more significant problem requiring replacement parts.
3. Consult a repair manual: A factory service manual for your 1993 Mark VIII will provide detailed information on the parking brake system and troubleshooting procedures.
Attempting to adjust something that isn't designed to be adjusted can lead to further damage and potentially dangerous situations. Focus on finding the root cause of the malfunction rather than searching for an adjustment you won't find.
