We often get a query about why my car jerks when I brake. Modern cars are meticulously designed for secure stopping. Yet, complications within the brake system can impede this process significantly, generating noticeable effects. Thus, a question comes up: What might be the root cause affecting your braking system?
Vehicles exhibit a jerking motion when decelerating because of problems within the braking mechanism, like warped brake discs or a deteriorating anti-lock braking system. Those new to manual transmission driving might experience this jerking sensation while slowing down due to their unfamiliarity with the process. Additionally, inadequate grip floor mats, tires with diminished treads, and aged brake pads contribute to the jerking occurrence during braking maneuvers.
Reasons why my car jerks when I brake and possible solutions
Worn Out Brake Rotors
Brake discs, or rotors, serve as the surface for your brake pads to grip, leading to halting the wheels and, by extension, your vehicle. With time, these rotors’ gradual erosion or distortion occurs because of the considerable heat produced by the braking process. Uneven brake rotors might contribute to an imbalanced brake application, ultimately prompting a jerky motion in your car as you engage the brakes.
In case your brake rotors are in bad shape – either worn down or warped – they’ll require substitution. Ordinarily, this job is handled by a skilled mechanic. However, if you’re at ease with car upkeep, you have the option to tackle it solo.
The essentials: new rotors, a simple toolkit, and a car jack for lifting. Here’s how to change the rotors yourself:
Low or Contaminated brake fluid
This is another reason for the query why my car jerks when I brake.
Your car is created to operate using an appropriate quantity of fluids, including coolant, oil, washer fluid, and, notably, brake fluid – a hydraulic liquid essential for the movement of various components like pistons and pumps in typical automobiles. Insufficient brake fluid might give the sensation of slight jolts in vehicle motion as the components in the brake lines struggle to function optimally. If the fluid becomes tainted, possibly due to water or dirt intrusion, it can result in uneven brake pressure, inducing a jerky movement during braking.
Initially, inspect the transparent reservoir beneath the car’s hood to ensure the brake fluid level is adequate. If it’s insufficient, add the suggested brake fluid type. When the fluid seems dim or stained, understand that it necessitates a replacement. Perform a brake fluid refresh to replace outdated fluid and regain optimal functionality. Purge the brake setup to eradicate air pockets.
Check your brake system thoroughly for any signs of leakage. If necessary, seek advice from a certified mechanic to ensure proper assessment and fixes. It will guarantee the secure operation of your brakes.
In case the vehicle has a manual gearbox, there might be a slight roughness experienced during braking, mainly if an inexperienced driver is operating the manual clutch while driving.
The vehicle could exhibit abrupt movements when gears are not shifted accurately during deceleration and braking. To execute downshifting correctly, the driver, using a manual transmission, must skillfully coordinate the clutch pedal, brake pedal, and gear shifter.
The person behind the wheel might simply require additional experience handling a manual clutch to achieve a more seamless outcome while applying brakes. Alternatively, the clutch unit might be failing.
Problems In The Brake Power Assist
It could be another reason why my car jerks when I brake.
Contemporary vehicles incorporate a brake booster system, a technology that aids in enhancing braking efficacy. Power-boosted braking entails utilizing the vehicle’s electric power or battery to augment braking capabilities.
Commonly, this power-assist mechanism simplifies braking for drivers by enhancing pedal pressure, ensuring secure and seamless stops.
Nonetheless, an impaired power assist brake system might lead to abrupt braking, causing vehicle jolting.
In case your car jerks when braking, a potential culprit could be a malfunction in the brake power assistance mechanism. Take a look at the vacuum lines and hoses for any possible leaks, closely examine the brake booster, and confirm the proper operation of the check valve.
Electrical and ABS Problems
It could be one valid reason if someone asks why my car jerks when I brake. Modern vehicles come with an Anti-Lock Braking System (ABS), which is like an electronic protector, curbing brake lock during traction loss. Imagine you’re skidding on an icy road; the ABS ensures the brakes are pumped rapidly by adjusting hydraulic force. This technique lets you retain command over steering while smoothly reducing vehicle speed, eliminating the need for pedal pumping by foot.
In such a scenario, you might sense a slight pulsation through the brake pedal. Alternatively, the brakes could become engaged, causing the tires to cease rotation, ultimately losing your ability to steer.
Should you encounter an issue with your ABS, it could result in brake locking and abrupt movements. Seeking assistance from a mechanic is advised to rectify the situation.
Seized Brake Caliper:
When you apply the brakes, a brake caliper experiencing a strong seizure could lead to abrupt vehicle movements. These sudden motions stem from the friction generated when a vehicle’s brake pads make contact with its corresponding rotors.
Furthermore, this situation might also be accompanied by a noticeable chattering sound in several instances.
First, ensure that the problem is there. Raise the car, remove the tire, and check the caliper for any signs of harm or sticking. If possible, cleanse the parts and add lubricant. Consider substituting the caliper with any used pads and equipment if it is significantly harmed.
Put everything back together, release any trapped air from the brakes if required, and conduct comprehensive testing before opting for expert assistance if the issues persist.
Damaged Brake Pads:
Your car’s brake pads experience depletion as time passes. If they thin out excessively, they could struggle to generate adequate traction for a seamless halt, potentially resulting in abrupt motion. Moreover, uneven wear and tear of brake pads might lead to erratic rotor engagement, inducing car jerks when braking.
Perform a brake pad replacement by elevating the vehicle, relieving pressure from the brake fluid, taking out the worn-out pads, placing in new ones, and then reassembling the caliper. If you are unsure, you should seek expert assistance for a secure and seamless braking experience.
It is not that hard to change the brake pad. Check this tutorial.
At times, floor mats might shift, disrupting the brake pedal function. Should this occur, pressing the pedal may not yield a seamless descent, potentially leading to vehicle jolting.
This problem has a simple solution: adjusting the position of the floor mat or carpet. If wrinkles, bunching, or recurrence occur, contemplate its removal or replacement. A swift resolution might involve interchanging it with the passenger side mat.
Tires tend to experience wear over a period, particularly with frequent car usage or driving on rugged roads. Moreover, discrepancies can arise as certain tires deteriorate more rapidly than their counterparts. Consequently, tires showing signs of wear and unevenness might lead to car jerking when braking, especially on roadways affected by snow, ice, or rain.
The only fix for addressing irregular or deteriorated tires is to swap them out for entirely new ones, ensuring evenness across all tires.
Worn Steering/Suspension Bushings:
Cars use various bushings (such as ones for the control arm, shock absorber, steering rack, etc.) to reduce vibrations in the front part of a vehicle.
Nonetheless, these bushings wear out over time, leading to a clear rise in previously subdued vibrations. This issue tends to become more noticeable when braking.
Worn suspension bushings can also cause annoying car squeaks while turning at low speeds.
Substitute the worn-out steering/suspension bushings to eliminate abrupt halting jolts. It will guarantee accurate alignment and consistent running for lasting stability and safety.
Most cars’ braking systems depend on a sealed hydraulic circuit, with a main cylinder functioning as the core, detecting the driver’s brake pedal input.
The master cylinder’s hydraulic fluid flows through brake lines toward the calipers for disc brakes or cylinders for drum brakes, much like blood circulating through vessels to reach our hands and feet.
The hydraulic fluid remains unyielding amidst pressure, ensuring pedal pressure triggers brake activation, forcing fluid motion to power braking elements.
Periodically, air might infiltrate the hydraulic setup, inducing an elastic sensation in the brake pedal, potentially resulting in the car jerking when braking. Now you know why my car jerks when I brake.
To address uneven braking due to air presence in the hydraulic system, perform brake bleeding to remove air pockets, examine for possible leaks, replenish brake fluid, evaluate the master cylinder, and, if necessary, acquire expert help.
Dirt and debris:
Have you been traversing rural landscapes? Your brake system and rotors have likely accumulated a good amount of grime and particles. These particles could lead to a slight pause in your braking process and an unusual jerking feel when the brakes engage unevenly between axles.
In order to address the abrupt motion while applying brakes, which can be attributed to particles and grime, elevate the vehicle, employ a wire brush and brake cleaner to cleanse brake parts, and subsequently take the car for a spin; if problems last, seek guidance from a skilled mechanic.
Dirty Fuel Injectors:
In case you observe that your car jerks when you brake or while speeding up, it’s probably due to the presence of unclean fuel injectors.
Generally, dirty fuel injectors can reduce your car’s power, leading to jerks during starting, acceleration, braking, or idling, mainly stemming from engine misfire. Now you understand why my car jerks when I brake, right?
To tackle the problem of car jerking when unclean fuel injectors cause braking, begin with additives that clean injectors and uphold consistent upkeep; deliberate professional servicing if problems persist.
Dirty Air Filters:
If your air filters are unclean, a reduced amount of air might reach your vehicle’s engine, accumulating soot. This residue tends to gather in different car areas, like the brake system or spark plugs, potentially causing abrupt movements during braking.
Opt for cleaning or changing the filters to maintain the right air-to-fuel balance. If the problem lingers, seeking advice from an expert mechanic could be beneficial.
Identifying Signs of Braking Issues
Our common goal is to achieve a seamless driving experience, yet abrupt jolting upon braking can immediately interrupt this sense of tranquility. Identifying the signs of braking problems is crucial, as prompt detection could spare you from encountering more substantial issues in the future. The following are the things you should be mindful of:
1. Changes in Brake Pedal Resistance
If you notice an unexpected difference in the resistance of your brake pedal – notably gentle or firm – it might point toward an underlying concern within your braking mechanism. To clarify, a pedal with a softer feel might imply the presence of air within the brake lines or a potential anomaly with the master cylinder. Conversely, a firmer pedal could potentially indicate complications with the brake booster.
2. Car Pulling to One Side When Braking
In case your vehicle has a tendency to drift to a particular direction upon brake application, it could be due to irregular wear on brake linings, possible presence of foreign substances within brake fluid, misaligned vehicle alignment, or uneven tire wear.
3. Squeaking or Squealing Noises
Typically, brake systems can produce high-pitched sounds that resemble squeaks or squeals when decelerating. It often signifies the requirement for brake pads replacement due to their deterioration. On occasion, this may also imply that your brake rotors have surpassed their functional limit.
4. Vibrations or Pulsations
Detecting vibrations or pulsations in your brake pedal might indicate warped rotors. It could occur due to aggressive braking, producing substantial heat that causes the rotor’s surface irregularities.
5. Warning Lights
Contemporary cars are now furnished with cautionary indicators that light up if issues arise with the braking system. When you observe the brake caution light or the ABS light (which stands for Antilock Braking System) on your car’s control panel, it is a definite indicator that something requires attention.
6. Diminished Brake Performance
If you observe an increase in your vehicle’s stopping distance or notice a decline in brake responsiveness compared to the past, it could point toward a potential concern related to your car’s braking mechanism. It potentially arises from factors like brake pad deterioration, compromised brake fluid, or other, more significant underlying issues.
When to Consult a Professional Mechanic?
Though a few automotive problems are manageable through DIY methods aided by proper equipment and effort, certain cases mandate the skills of an expert. Here are a few scenarios warranting the advice of a professional auto technician:
- Unclear Diagnosis
In case you’ve observed that your car jerks when braking and are uncertain about its origins, it’s a suitable moment to seek advice from an expert. An experienced auto technician possesses cutting-edge equipment and expertise to precisely identify the matter.
- Repetitive Problems
Should a specific problem persist despite your efforts to address it, it could signal an underlying issue that is not readily apparent, asking for consultation with a skilled mechanic for a thorough assessment.
- Complex Repairs
Certain fixes related to brake sensors, transmission setup, or engine might be intricate and demand specific equipment. Unless you possess adequate know-how and certainty in handling these tasks, delegating them to an expert is wiser.
- Lack of Time or Tools
At times, despite your skills for fixing things, you could lack the required equipment or the luxury of time. Professionals possess specialized instruments that expedite tasks, enhancing efficiency and conserving valuable time and energy.
- Safety Concerns
Prioritizing safety is crucial at all times. If you’re uncertain about safely completing a repair, we recommend you consult a professional mechanic. Safety-critical concerns, especially those related to braking problems, should be handled with precise attention.
Why My Car Jerks When I Brake – FAQs
Is experiencing a sudden jolt during braking a safety concern?
It could pose a safety risk if you find it challenging to manage your vehicle during braking. Additionally, any indication of non-uniform braking may imply potential equipment malfunctions that could escalate into hazardous situations if unaddressed.
Is it advisable to operate a vehicle with erratic or unusual brake behavior?
It’s a reasonable suggestion to request a tow truck, particularly if your insurance covers towing expenses. Getting your vehicle relocated securely is much wiser than jeopardizing both you and your vehicle due to a complete brake system malfunction.
Why is my car exhibiting a bouncy response when I apply the brakes?
Experiencing a slight bouncing feeling when applying the brakes might arise from brake rotors that have become uneven or parts of the suspension that have seen better days, leading to uneven allocation of pressure.
What might be causing my vehicle to exhibit abrupt movements while decelerating?
Experiencing an abrupt movement during deceleration might arise due to a range of factors. These may encompass problems with the transmission, engine, or an incorrect fuel-to-air ratio. To address this, we recommend conducting a comprehensive assessment through a qualified expert.