Here's a breakdown of how to troubleshoot and potentially fix a non-locking parking brake:
1. Cable Adjustment: This is the most common cause. The parking brake cables may be stretched or need adjustment.
* Locate the cables: These run from the parking brake lever inside the car to the rear brakes. You'll likely find adjustment points near the rear wheels or under the car near the rear suspension. Consult your repair manual for precise locations (a Haynes or Chilton manual is highly recommended).
* Adjust the cables (if accessible): There are usually adjustment nuts or star wheels on the cables. Turn them clockwise to tighten the cables. Do this *slightly* and test the parking brake after each small adjustment. The goal is to find the point where the brake holds firmly but isn't excessively tight (difficult to release). If you over-tighten, you can damage the braking system.
* Check for cable fraying or breakage: Inspect the cables for any damage. Broken or severely frayed cables need to be replaced.
2. Brake Shoes/Pads: Worn-out brake shoes (rear drum brakes) or pads (rear disc brakes – less common on this model year, but possible) are a significant factor.
* Inspect the shoes/pads: You'll need to remove the rear wheels and drums (for drum brakes) or calipers (for disc brakes) to inspect the brake shoes or pads. If they're severely worn, they won't provide enough grip.
* Replace the shoes/pads: Worn-out shoes or pads must be replaced. This usually involves a complete brake shoe/pad kit including springs and other hardware.
3. Internal Mechanism: Problems with the parking brake lever mechanism inside the car are less common but possible.
* Lever linkage: Inspect the linkage between the parking brake lever and the cables for any damage, looseness, or binding. Repair or replace damaged parts as needed.
* Broken lever: In rare cases, the parking brake lever itself might be broken internally. This usually requires replacement.
4. Rear Brake Caliper (If Disc Brakes): If your Probe has rear disc brakes, the calipers may be seized or malfunctioning.
* Check for caliper issues: Inspect the calipers for any signs of sticking or damage. Seized calipers may need to be rebuilt or replaced.
Important Considerations:
* Repair Manual: Obtain a repair manual specific to your 1993 Ford Probe. This will provide detailed instructions and diagrams for accessing and adjusting the parking brake components.
* Tools: You'll need basic tools such as wrenches, sockets, and potentially a brake spring tool (for drum brakes).
* Safety: Be extremely cautious when working on your brakes. Incorrectly adjusted or repaired brakes can be dangerous. If you're unsure about any step, consult a qualified mechanic.
If you're not comfortable working on your brakes yourself, it's strongly recommended to take your vehicle to a qualified mechanic. Brake system issues are crucial for safety and should be addressed professionally if needed.
