26/03/2022
The Ford Focus, a stalwart of the family car market since its 1998 debut, has garnered immense popularity for its driving dynamics and practicality. However, like any vehicle that sees significant mileage, its suspension system can be a focal point for wear and tear, often leading it to workshops for attention. Understanding the common culprits and their remedies is key for any Focus owner looking to maintain optimal performance and comfort. This guide, drawing insights from specialists like Febi, delves into the intricacies of the Ford Focus suspension, outlining what can go wrong and what to look out for.
Front Suspension: The MacPherson Strut Setup
The independent front suspension of the Ford Focus typically employs a MacPherson strut system. This design integrates the shock absorber and coil spring into a single unit, which is directly attached to the steering knuckle. Alongside this, a track control arm works in conjunction with an anti-roll bar to enhance stability and minimise body roll during cornering. While a robust system, certain components are more prone to wear over time.
Anti-Roll Bar Links: The Rattle Warning
One of the more noticeable symptoms of a worn front suspension can be a rattling noise, particularly when the vehicle is driven over bumpy or uneven road surfaces. This is often attributed to worn anti-roll bar links. These links connect the anti-roll bar to the suspension arms, and when their joints become loose or the rubber bushings degrade, they can create an audible clatter. Early detection and replacement of these links can prevent more significant issues and ensure a quieter, more stable ride.
Track Control Arm Bushings: An Economical Fix
A particularly common wear item, especially on the MK2 Ford Focus, is the track control arm bush. These rubber or polyurethane components are crucial for allowing controlled movement of the suspension arm while isolating the chassis from road vibrations. When these bushes wear out, they can lead to imprecise steering, increased tyre wear, and knocking sounds from the front end.
Fortunately, the track control arm bush is often replaceable as a separate component, offering a more economical repair solution compared to replacing the entire control arm, which is usually still perfectly serviceable. Febi, for instance, offers these bushes as standalone parts, often supplied with new fixing bolts, simplifying the repair process.
Crucial Alignment: The correct alignment of the new bush during installation is paramount. The bush must be precisely positioned on the suspension arm shaft to ensure its intended function and longevity. The old bush can typically be pressed out using a hydraulic press or carefully cut away using appropriate tools, taking care not to damage the shaft itself. Once the shaft is cleaned, the new bush is pressed into place. Specialised tools are available to maintain the correct alignment during this pressing process, guaranteeing the bush is installed as per manufacturer specifications. The febi part number 32418, for example, is designed for this purpose and has applications across several Ford, Mazda, and Volvo models, highlighting its commonality.
Rear Suspension: The Multi-Link Advantage
The Ford Focus also features a sophisticated rear suspension system, often a multi-link setup. This design, lauded for its compact nature which maximises luggage space and contributes to excellent handling characteristics, uses a series of links to precisely locate the wheel. The key components include a trailing arm, which handles fore-and-aft wheel location and brake torque reaction, supported by several other locating links.
Trailing Arm Bushes: Maintaining Longevity
As with many suspension components, the bushes within the multi-link system are susceptible to wear. The trailing arm bush, a critical element in this setup, is replaceable, similar to its front-end counterpart. Proper alignment during installation is vital; an incorrectly fitted bush can experience excessive twisting of its rubber element, significantly shortening its lifespan. Febi part number 34249 is a replacement trailing arm bush that requires careful installation to avoid premature failure.
Track Control Arms and Corroded Fixings
The track control arm in the rear suspension, situated between the cross member and the wheel knuckle, can be prone to stress fractures after prolonged service. When this arm needs replacement, or when access is required for other components like the road spring, mechanics often encounter issues with the fixing bolts. These bolts are susceptible to corrosion, especially in regions with harsh weather conditions or where de-icing salts are used.
Corrosion can lead to several problems: bolts may shear off during removal attempts, or they can become seized within the inner sleeve of the bush. In such cases, cutting off the bolts may be the only viable option to remove the arm.
Eccentric Bolts and Load-Bearing Tightening
A key point to note is the eccentric bolt used for camber adjustment. This bolt must be able to turn freely to allow for proper wheel alignment. Furthermore, it is a widely accepted best practice in suspension maintenance to tighten all suspension fixings only when the vehicle's weight is fully supported by the wheels (i.e., the suspension is under load). Tightening components while the vehicle is suspended on a lift can misalign the bushes, placing unnecessary strain on them and potentially leading to premature wear or incorrect suspension geometry.
Wheel Alignment: The Essential Follow-Up
Following any suspension repair or component replacement, a comprehensive wheel alignment is not just recommended; it is essential. Correct wheel alignment ensures that the wheels are pointing in the right direction, optimising tyre wear, improving fuel efficiency, and crucially, guaranteeing the vehicle handles as intended by the manufacturer. Neglecting this step can undo the benefits of the repair and compromise safety.
Febi Prokits: Convenience and Completeness
To streamline the repair process and ensure all necessary parts are readily available, many febi suspension components are offered as part of their 'Prokits'. These kits typically include all the required fixings and small parts needed to complete a specific repair, saving installers valuable time and effort in sourcing individual items. This integrated approach not only enhances efficiency but also reduces the risk of overlooking critical fasteners, contributing to a more reliable repair.
Common Wear Item Summary Table
| Component | Typical Symptoms of Wear | Repair Considerations | Febi Example Part |
|---|---|---|---|
| Anti-Roll Bar Links | Rattling or clunking over bumps | Replace links; ensure proper fitment | N/A (specific part not listed) |
| Front Track Control Arm Bush | Imprecise steering, knocking, uneven tyre wear | Replace bush separately or with arm; critical alignment | 32418 |
| Rear Trailing Arm Bush | Vague rear-end handling, clonking | Replace bush; critical alignment during installation | 34249 |
| Rear Track Control Arm | Stress fractures, potential failure | Replace arm; be prepared for corroded fixings | N/A (specific part not listed) |
Frequently Asked Questions
Can a Ford Focus suspension be repaired?
Yes, the suspension of a Ford Focus can certainly be repaired. Many common wear items, such as bushings and anti-roll bar links, are designed to be replaced, offering cost-effective solutions for restoring proper function and ride quality.
Why did my Ford Focus front coil springs break?
While coil springs can fail, it's less common than bush wear. Potential causes include manufacturing defects, excessive stress from impact (e.g., hitting a large pothole), or corrosion weakening the metal over time. A reported instance of a broken spring at around 100,000 km could be due to fatigue or an impact event. The cost of replacement parts can vary, with one user mentioning a $25 sway bar link replacement, though coil springs themselves would typically be more expensive.
How often should Ford Focus suspension be checked?
It's advisable to have your Ford Focus suspension checked during its regular service intervals. If you notice any unusual noises, changes in handling, or feel a less comfortable ride, it's worth getting it inspected by a qualified mechanic sooner rather than later.
What are the signs of a worn suspension?
Common signs include: knocking or rattling noises, especially over bumps; a 'wandering' or imprecise steering feel; the car pulling to one side; uneven tyre wear; excessive body roll when cornering; and a generally harsher or bouncier ride.
Is it worth repairing an old Ford Focus suspension?
This depends on the overall condition of the vehicle and the extent of the repairs needed. For a well-maintained Focus, repairing the suspension is often a worthwhile investment to maintain its driving characteristics and safety. If the vehicle has numerous other significant issues, the cost-effectiveness of suspension repairs should be weighed against the overall value of the car.
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