Many car owners ignore the first signs of a malfunction, attributing the knocking noise to natural wear and tear on the road surface. But if you do not pay attention to the problem in time, the consequences can be much more serious than simple discomfort. A damaged strut can result in loss of control or damage to other suspension components. In this article we will look in detail at how to diagnose a malfunction, what original number choose spare parts and how to replace them yourself.
The role of the stabilizer bar in vehicle safety
The stabilizer link is the link between the transverse stabilizer bar and the suspension arm. Its main task is to reduce body roll when cornering, ensuring maximum vehicle stability.
When you go into a corner, the body begins to lean. Anti-roll bar tries to counteract this process by curling up. The strut transmits force from the stabilizer to the lever. Without working struts, the stabilizer simply dangles, not performing its function, which makes car control unstable.
In the model Skoda Rapid 2021 suspension design is quite simple, but the requirements for the quality of parts are high. Factory components are designed for a certain service life, but this may be reduced due to an aggressive driving style or poor road surfaces. Elasticity of silent blocks and the strength of the ball joints are critical to the longevity of the assembly.
β οΈ Attention: Ignoring a malfunction of the stabilizer struts can lead to the fact that during a sharp maneuver at high speed the car will suddenly go into a skid, since the stabilizer will not be able to effectively dampen rolls.
In addition, the wear of these elements directly affects tire wear. Uneven load on the wheels due to the βfloatingβ suspension leads to rapid wear of the rubber. This is not only an additional cost for a new set of tires, but also a reduction in the level of passive safety.
Main symptoms of malfunction
You can determine that it is time to change the racks by the characteristic signs that appear during operation. The most obvious signal is a knocking or squeaking noise heard when driving over bumps. The sound usually comes from the front wheel area and becomes louder at speeds of 30β60 km/h.
When driving on uneven roads, the steering wheel may vibrate. This is due to the fact that a loose strut cannot dampen shocks, transmitting them further along the levers and steering rack. Play in the ball joint causes this effect.
Also pay attention to the car's behavior when cornering. If the rolls have become noticeably greater than before, and the car begins to βrollβ on its side, this is a sure sign that the stabilizer has stopped working. In some cases, the knocking noise can be heard even when driving slowly through potholes in the yard.
- π A characteristic metallic knock when passing speed bumps.
- π Increased body roll when entering a turn.
- ποΈ Steering wheel vibration transmitted to the dashboard.
Sometimes the problem is disguised as a malfunction of shock absorbers or levers, so accurate diagnosis is necessary. Visually inspecting the suspension on a lift often gives a clearer picture than simply listening for knocking noises.
- Every maintenance
- Once a year
- Only when I hear a knock
- Never checked
Diagnostics and testing of stabilizer struts
There are several ways to check the condition of the racks. The simplest is a visual inspection. Raise the car on a lift or drive into a pit. Inspect the strut boots for cracks and tears. If the rubber is torn, the lubricant has leaked out, and dirt has gotten inside, the service life of the part has been exhausted.
The second method is a mechanical check for play. Grab the rack with your hands and try to swing it in different directions. If you feel free movement or hear clicks, the part is faulty. You can use a pry bar to check: pry up the stand and check if there is a gap in the ball joint.
An effective test method is to rock the car by the front fender. If, when rocking, you hear a knock in the area where the stabilizer is attached, the problem has been found. It is important to check both struts as wear often occurs at the same time.
Sometimes a knocking noise can simulate a malfunction of the stabilizer bushings. Therefore, when diagnosing, you need to pay attention to where exactly the sound comes from. Stabilizer bushings they creak and the racks knock. This is an important distinction for purchasing the right parts.
β οΈ Attention: When checking the rack with a pry bar, act carefully so as not to damage the hinge boot, if it is still intact. Strong pressure can lead to immediate failure of the part.
Detailed instructions for checking play
For an accurate check, use a sturdy pry bar. Insert it between the lever and the stabilizer link. Apply force, trying to move the stand relative to the lever. If the hinge is working properly, it should not move. Any displacement of more than 1 mm indicates the need for replacement.
Choice of spare parts: original or analogue
Spare parts market for Skoda Rapid oversaturated with offers. But how to choose a high-quality rack that will last a long time? Original part from Skoda has a catalog number that is best suited for searching. However, the original is often sold in a dealer's box at a premium.
There are proven analogue manufacturers that offer products of the same or even higher quality. Brands like TRW, Febi, Stabilus are often suppliers to the assembly line. Their products are cheaper than the original, but at the same time guarantee reliability.
Avoid buying racks from little-known Chinese brands with no history. They can last only a couple of thousand kilometers. Savings here are inappropriate, since the cost of replacement is low, and the risk of receiving a defective part is high.
When choosing, pay attention to the type of fastening. Depending on the year of manufacture and configuration, the racks may have different lengths or thread types. Stand length critical for proper suspension operation. If it is too long or short, the stabilizer will not work within its designed range.
- β TRW (JTS400) - excellent balance of price and quality, often goes like the original.
- β Febi Bilstein - a reliable German brand, wide availability.
- β Skoda Original - the most expensive, but guaranteed option.
The table below shows the main articles for your car so that you do not get confused in the catalogs.
| Manufacturer | Article | Approximate price | Note |
|---|---|---|---|
| Skoda | 5Q0407151B | 2500β3500 β½ | Original, set of 2 pcs. |
| TRW | JTS400 | 1200β1800 β½ | Original supplier |
| Febi | 41658 | 1000β1400 β½ | Good analogue |
| Stabilus | 196436 | 1100β1500 β½ | High quality |
Before purchasing, be sure to compare the length of the new stand with the old one. Even a 1-2 cm difference can be critical for the suspension geometry.
Tools and preparation for replacement
Replacing stabilizer struts with Skoda Rapid - a task that can be completed independently in a garage. To do this you will need a standard set of tools. Make sure you have a jack, car stands, and a socket set.
You will need heads for 13, 15 and 18. Often the strut mounting nuts get stuck, so it is better to have a penetrating lubricant (WD-40 or equivalent) on hand. A ratchet wrench and a wrench for applying force are also useful.
Sometimes a special wrench is required to hold the hex rod of the strut. In stock, a hexagon is often used on 6 or 7 mm. If you do not have such a wrench, you can use an adjustable wrench, but there is a risk of breaking the edges.
- π§ Set of socket heads (13, 15, 18 mm).
- π Adjustable wrench or hex wrench for rod.
- π§ Penetrating lubricant (WD-40, Liquid Wrench).
- π οΈ Jack and safety stands.
Before starting work, it is recommended to clean the mounting area from dirt and rust. This will make it easier to unscrew the nut and avoid it breaking. If the nut does not budge, do not use excessive force; it is better to warm up the joint or give the lubricant time to work.
βοΈ Preparing for replacement
Step-by-step replacement instructions
The replacement process begins with lifting the car. Loosen the wheel bolts on the front wheel, jack up the car and place it on a secure stand. Remove the wheel for easy access to the suspension components.
Find the stabilizer link. It is attached to the suspension arm at the top and to the stabilizer at the bottom. First, unscrew the lower nut connecting the strut to the stabilizer. Use a hex wrench to secure the rod from twisting.
Then unscrew the top nut securing the strut to the arm. Here