1993-1997 Ford Probe Brake Caliper Problems and Replacement

By Core Brake Parts Tech Team — Circleville, OH warehouse

The most common brake caliper problem on the 1993-1997 Ford Probe is a rear caliper that seizes or will not release after the parking brake is set, and it shows up on cars with four-wheel disc brakes. Owner complaints filed with NHTSA trace many of these failures to a deteriorated seal on the parking brake pivot inside the rear caliper, which lets water in and corrodes the mechanism. The fix is replacing the affected caliper, and in most cases the pads and rotor on that axle with it.

Which Probes Have Rear Calipers

Not every second-generation Probe has the part that causes the trouble. Consumer Guide's review of the 1993-1997 Probe notes that the GT stops on all-disc brakes, while base Probes use rear drums, and that anti-lock brakes were optional on both. So the rear caliper problems described below apply to the GT (and any car equipped with rear discs); a base car with rear drums has shoes, wheel cylinders and a drum-type parking brake instead.

The Probe shares its chassis with the Mazda 626 and MX-6 of the same years, which is useful when you shop for parts. Cardone lists its remanufactured single-piston floating calipers for the 1993-1997 Probe alongside the 626 and MX-6, for example. Before you order, confirm whether your car has rear discs or drums by looking through the wheel, and check your trim and ABS equipment.

Why Probe Rear Calipers Seize

On a rear-disc Probe the parking brake is not a separate drum inside the rotor. The cable pulls a lever on the rear caliper, and a mechanism inside the caliper pushes the piston out to clamp the pads. That means the caliper does two jobs, and it has more moving parts than a front caliper.

NHTSA complaints collected by the Center for Auto Safety for the 1993 and 1994 Probe describe the same pattern over and over: rear calipers that stay applied after the handbrake is released, rear wheels that drag, smoke and a burning smell, and some owners replacing the same caliper more than once. One 1993 owner reported that both rear calipers seized twice and blamed a rubber seal on the handbrake pivot pin that breaks down early, letting moisture reach and corrode the needle bearings. The same complaint states that Ford revised the calipers on cars built after January 5, 1995. Another 1994 complaint names corrosion of a pivot pin in the rear caliper as the cause of the parking brake locking up.

The other causes are the ordinary ones every caliper faces as it ages:

• Corroded slide pins. The single-piston floating caliper has to slide on its pins to clamp evenly. Dry or rusted pins cause uneven pad wear and a caliper that drags.
• A sticking piston. A torn dust boot lets water reach the piston, which rusts and binds in its bore.
• A stuck parking brake cable. A cable that is rusted inside its sheath can hold the caliper lever partly applied even when the caliper itself is healthy.
• Old brake fluid. Fluid absorbs moisture over time, which speeds corrosion inside the caliper.

Symptoms and How to Diagnose Them

A dragging rear caliper on a Probe usually tells on itself. Watch for these signs:

• The car feels like it is fighting you, coasts poorly, or fuel economy drops.
• A hot, burning smell or light smoke from one rear wheel after a drive.
• One rear wheel far hotter than the other after a short drive (check carefully with the back of your hand held near, not on, the wheel).
• The inner and outer rear pads on one side worn much more than the other side.
• A rear rotor with blue heat marks or a heavy lip.
• The rear wheels stay locked after the parking brake is released, as several owners reported to NHTSA.

To separate a bad caliper from a bad cable, raise the rear of the car safely on stands with the parking brake released and spin each rear wheel by hand. If a wheel drags, look at the lever on the back of that caliper. If you can push the lever fully back to its stop and the wheel frees up, the cable is the likely culprit. If the lever is already at rest and the wheel still drags, the caliper mechanism or piston is stuck, and the caliper should be replaced. Also note that Probe owners have reported ABS warning light faults as a separate issue; an ABS light is not caused by a dragging caliper.

The Fix: Replacing a Probe Caliper

Rear calipers on these cars are replaced, not freed up. Rebuilding the internal parking brake mechanism is not practical at home, and a remanufactured caliper arrives with new seals, boots and hardware. Front calipers are simpler single-function units and are replaced when the piston binds, the boot tears or the caliper leaks.

1. Loosen the lug nuts, raise the car, support it on stands and remove the wheel.
2. For a rear caliper, disconnect the parking brake cable from the caliper lever first.
3. Remove the brake hose banjo bolt or line fitting and plug the line to limit fluid loss.
4. Remove the caliper mounting bolts and the caliper, then inspect the bracket, slide pins and pads.
5. Rear pistons on parking-brake calipers typically screw back in rather than push straight in. Use a caliper piston tool and follow the replacement caliper's instruction sheet.
6. Install the new caliper with new sealing washers, reconnect the parking brake cable, and tighten all fasteners to the values in the factory service manual.
7. Bleed the brakes, starting at the corner you opened, until the fluid runs clear with no air.
8. Adjust and test the parking brake, then road test gently and recheck for drag.

When cleaning and lubricating the slide pins, use a brake-specific high-temperature lubricant. Ford issued a service alert stating that petroleum-based grease is no longer acceptable as a lubricant when servicing disc brakes, because it can swell rubber boots and seals.

What to Replace at the Same Time

A seized caliper usually damages what is around it, so plan the job as an axle job, not a single part:

• Pads on both sides of the axle. A dragging caliper overheats and glazes its pads. Always replace pads in axle sets so braking stays even. Browse brake pads or ceramic brake pads for a quiet, low-dust choice.
• Rotors. Heat from a stuck caliper often leaves a rotor warped or heat-marked. Replace rotors in pairs from our brake rotor collection.
• Calipers in pairs. If one rear caliper has seized from pivot-seal corrosion, the other is the same age and exposed to the same weather. Many owners do both rear calipers at once. See replacement brake calipers.
• Hardware and hoses. New abutment clips and slide pin boots from a brake hardware kit, and a new brake hose if the old one is cracked or swollen.
• Brake fluid. Flush the system with the fluid type printed on your master cylinder cap.

If both axles are due, a complete pad and rotor set saves time. We carry the 1993-1997 Ford Probe front and rear brake kit from R1 Concepts, which covers pads, rotors and hardware for both ends of the car.

How Hard Is the Job?

A front caliper swap on a Probe is a beginner-to-intermediate job with basic hand tools, a line wrench and a way to bleed the brakes. The rear caliper on a four-wheel-disc car is a step harder because of the parking brake cable connection, the screw-in piston and the parking brake adjustment afterward. Budget extra time if the cable ends are rusted, and have penetrating oil ready for old bracket bolts. If you are not comfortable bleeding brakes or setting up the parking brake, this is a reasonable job to hand to a shop.

What drives the cost is mostly how much you replace: one caliper alone, a pair of calipers, or calipers plus pads and rotors on that axle. Remanufactured calipers usually cost less than new ones, and returning the old core often earns a credit.

Frequently Asked Questions

Does my Ford Probe have rear disc brakes or drums?

According to Consumer Guide, the 1993-1997 Probe GT uses four-wheel disc brakes and the base Probe uses rear drums. Look through the rear wheel to confirm before ordering parts.

Why does my Probe rear brake stay locked after I release the parking brake?

On rear-disc Probes the parking brake works through the rear caliper. NHTSA complaints point to corrosion of the parking brake pivot inside the caliper after its seal breaks down, and a rusted cable can cause the same symptom. Check whether the caliper lever returns fully before replacing parts.

Should I replace both rear calipers at once?

It is not strictly required, but it is common practice. Both calipers are the same age and exposed to the same moisture, so if one has seized from internal corrosion, the other is often close behind.

Will Mazda 626 or MX-6 calipers fit a Ford Probe?

The Probe shares its platform with the 1993-1997 Mazda 626 and MX-6, and caliper makers such as Cardone list the same caliper for all three. Always match by your exact year, position and brake equipment rather than assuming.

Do I need new pads and rotors with a new caliper?

If the old caliper was dragging, yes in most cases. Overheated pads glaze and rotors can warp or heat-check, so replace pads in axle sets and rotors in pairs if they show damage.

What grease should I use on the caliper slide pins?

Use a high-temperature brake lubricant made for caliper pins. Ford has advised that petroleum-based grease is no longer acceptable on disc brake components.

Sources

1. Center for Auto Safety - 1993 Ford Probe - rear caliper seizing complaints, handbrake pivot seal cause, revised calipers after January 5, 1995, parking brake and ABS light complaints
2. Center for Auto Safety - 1994 Ford Probe - pivot pin corrosion complaints and the Ford service alert on petroleum-based grease
3. Consumer Guide - 1993-97 Ford Probe - GT all-disc brakes, base rear drums, optional ABS
4. Cardone - Disc Brake Caliper 19-1596 - single-piston floating caliper listed for Probe, 626 and MX-6
5. Cardone - Disc Brake Caliper with Bracket 19-B1596 - Probe, 626 and MX-6 1993-1997 fitment