Car jerks when braking at low speed

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Car jerks when braking at low speed

May 23, Blog. If your car is jerking around when you accelerate this is a warning sign that there is a bigger problem with your car. The sooner you are able to diagnose the issue, the more you can minimize the damage to your car and lower the costs of the repair. You should not ignore this problem, always bring your car into a certified mechanic before it gets worse.

Car jerking is a common problem with many different factors that can contribute to the cause. These are the most common reasons why your car jerks while accelerating…. Spark plugs that are worn out will cause the engine to misfire. This means that your spark plugs are not igniting the fuel in each piston cylinder in a timely manner, causing your car to jerk around while accelerating.

If your spark plugs are worn out they should just be replaced, as they are generally an easy and inexpensive repair.

car jerks when braking at low speed

When your fuel injectors get dirty the stream of fuel will not be continuous, causing misfires in your engine — and as a result your car to jerk as you accelerate. Your fuel injectors should be cleaned occasionally to avoid this problem, as well as more costly repairs down the line.

You may experience jerking if your acceleration cable is worn out. This is a metal braided cable that serves as a link between the gas pedal and your engine throttle plate. When you press the gas pedal the cable is pulled and this opens the throttle. Over time these cables weaken with age and can fail and break. When this cable becomes damaged it will take you longer to accelerate and cause your car to jerk.

Car engines need air and fuel to work. Inside of your engine air mixes with fuel and is lit by the spark plugs to create an explosion that moves the pistons inside. This cycle continues on and on, allowing your car to move. If there is a block in the lines that allow fuel or air into your engine then this cycle is interrupted and can cause your car to jerk as you try to accelerate.

Typically a check engine light will appear if one of these intakes is blocked — remember, never ignore your check engine lightalways bring it into a service center right away! This can happen easily when you are parked outside in cold weather.


The best way to prevent this is to park in a warm dry spot on cold and wet weather days. Your catalytic converter is responsible for regulating the emissions coming out of your car. Sometimes the rich mixtures of air and fuel that flows through your catalytic converter can clog, which can result in a jerking or stuttering motion when you press the gas pedal.

At AAMCO Colorado, we run a thorough Vehicle Courtesy Check to get at the root of the problem, make an accurate diagnosis, and confirm with you the work that needs to be done to fix it right and get you back on the road. Thanks a lot here! I think my accelerator cable could be my problem coz my plugs are okay. I never spiked a service. Unfortunately, we can not diagnose your vehicle without seeing it in one of our service centers.

If you are local to Colorado stop by one of 14 Colorado AAMCO Service centers and we can perform a free diagnostic check on your vehicle where we can access any repair needs your vehicle may have. My car jumps hard when slowing down to turn in and makes a loud noise what could that be the car runs fine other than that and it does not do it every time I drive it.You never thought it would happen to you, but it did.

Your trusty sedan has started puttering when you try to accelerate.

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Just like that car sold by a scamming salesman from a used car shop in a comedy movie you saw. But this is no joke. The earlier you can know the reason behind the jerk, the more you can minimize the damage and the costs of repair. There are several reasons why car jerks when accelerating.

Most of the time, the jerking issue would go away after you have driven it a few miles, so most people tend to ignore it.

car jerks when braking at low speed

This type of car jerk is very common in a manual transmission, especially for those who are just starting to learn how to drive and mostly happens when you are trying to shift from the first to the second gear while you speed up. A stick shift car gets you more involved than an automatic one. It requires the use of all your limbs and proper coordination.

Why does car jerk when braking?

This usually occurs if you abruptly release the clutch pedal after changing gears or you shift to another gear with a half-depressed the clutch. The air mixes with the fine spray of fuel inside the engine and is then lit by the spark plug, causing a controlled explosion, which moves the pistons.

This goes on and on, and this cycle is what makes the engine run and your car to move. A block in the fuel line or air intake can make the car jerk during acceleration as it loses one, or even both of the essential factors in keeping the engine running.

Take your car to the service center immediately and have a professional take a look.

car jerks when braking at low speed

Faulty fuel lines can even cause a fire in your engine or worse, an explosion. A disruption in the flow of fuel from the tank to the engine will cause the car to hesitate during acceleration, which will then cause a jerk.

Check for leaks that may have been caused rats chewing off the fuel pipes. Older cars are also susceptible to faulty fuel line issues. This is a common scenario when the car is parked outdoors and the weather is cold. Moisture can accumulate inside the distributor cap that can cause the engine to car misfires when accelerating hard, which in turn causes the jerking in the car.

You cannot skip physics on this one, so prevention is the way to go. Unless you keep the engine running idle when you park and waste money on precious fuel but keeping the engine warm and warding off moisture, you better find a warmer, enclosed parking spot. Dirt is another common factor why your car jerks as you try to accelerate. Fuel from the filling station can become dirty due to the sediments in the fuel storage.

Why is My Car Jerking? - All Possible Reasons

The sediments may then settle inside your fuel tank. When the filter is not doing its job, the fuel injection is the next one to get the dirt.It does this especially when I first start driving. There is also a hesitation after pressing on the gas pedal - not good. I would like your professional assessment of this problem before I go to a mechanic.

Thank you. Hi there. There are some common issues that can cause this. I usually start by checking to see if the car needs a tune up.

Worn out spark plugs can cause this. I usually also check the air filter and replace it if it is dirty. A dirty throttle body can also cause this. In some cases a diagnostic computer needs to be installed to see if the air flow sensor and fuel ratios are correct.

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A dirty air flow meter will also cause this. Q: Car hesitates and jerks at low speeds asked by Kimberl B. Robert Tomashek Automotive Mechanic. Thank Robert. Was this answer helpful? Thank you for your feedback! Sorry about that. Why wasn't this information helpful? Recommended Services. The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details.

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Related Questions. Display on the radio is not working by Zoe F. My engine makes a humming noise that sounds sort of computerized, and may be power steering or transmission related. Truck jerks and hesitates on acceleration by Abc. Car cannot start, shifter showing second gear by Samantha M.

Home Questions. Year I don't know. What others are asking My oxy pst fuse keeps blowing out Usually when a fuse blows, it is due to some kind of short in the electrical circuit that is related to the blown fuse. I would recommend having the wiring to the cooling fan inspected for damages. I would also Read more.As you approach an intersection, the traffic light turns yellow, then red just after you apply pressure to the brake pedal.

Why does car jerk when braking?

The next moment, your vehicle jerks slightly before coming to a full stop. This is an uncomfortable sensation, one you may have experienced before, but this time you are greatly concerned. If your car jerks when braking, you need to determine the cause and find the correct solution. These three steps will get you started.

Typically, brakes will squeal, squeak or grind, particularly with warped rotors.

car jerks when braking at low speed

The problem may only be air in the brake lines. You may also need to replace brake pads and replace or resurface worn rotors. Lastly, inspect the spare tire to ensure it has sufficient air. Specifically, the system includes sensors, an electronic control module and a hydraulic control unit. Usually, when the ABS system is malfunctioning, a warning light switches on in the instrument panel.

Faulty sensor wiring or metal shavings or other debris may be contributing problems — the latter causing false feedback. Use an ABS scan tool to check for fault codes, which will identify the problem. Finally, when the work is done, the fault code should disappear or you can clear it with your diagnostic tool.


Handling simple tasks early on can help you avoid larger issues later, including brake problems. Photo courtesy of Wikimedia Commons. He since moved on to learn a few things about coefficient of drag, G-forces, toe-heel shifting, and how to work the crazy infotainment system in some random weekly driver.

Matt is a member of the Washington Automotive Press Association and is a contributor to various print and online media sources. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. By Matthew C.

Keegan March 30, As you approach an intersection, the traffic light turns yellow, then red just after you apply pressure to the brake pedal.

Related Articles. Keegan March 21, Keegan March 7, What Is a Brake Bleeder Screw? By Blair Lampe March 5, Keegan March 1, By Blair Lampe February 28, April 8, Pro Tips for Strut Installation April 7, April 1, I recently bought this car and I've noticed that it jumps or jerks forward when I almost come to a complete stop.

It's like right before I fully stop that it does it. When I accelerate it changes gears it's kind of sluggish but it's not too bad. My RPM only moves a little when I'm waiting at a stop and it vibrates the car sometimes. I mainly want the jerk fixed. I don't think it's the brake rotors or pads because they look fairly new. Could it be the transmission fluid? Does it need to be changed? Does it need to be flushed? I can't check it on my car because it's under the car.

Hello, What you are describing may be a result of a faulty speed sensor, potentially low transmission fluid or a even a faulty transmission control solenoid. As your vehicle travels down the road, the computer analyzes data being sent by vehicle speed sensors and engine speed sensors. These transmission solenoids have spring-loaded plungers inside them, which are wrapped with wire.

When this happens, the transmission changes gears and you continue down the road. The computer controls the transmission solenoid in several ways. If the vehicle is equipped with a dedicated Transmission Control Unit, it can open or close the hydraulic circuit using a direct 12v signal. When this is not working properly, this can cause a jerking reaction, a delay in shifting or in some cases may cause the transmission to hesitate in shifting gears.

I would recommend having a professional from YourMechanic come to your location to diagnose and inspect your transmission.

Q: My car jerks when it almost comes to a complete stop asked by Christopher D. My car has miles. My car has an automatic transmission. Jeff Engstrom Automotive Mechanic. Thank Jeff. Was this answer helpful? Thank you for your feedback! Sorry about that. Why wasn't this information helpful? Recommended Services. The statements expressed above are only for informational purposes and should be independently verified.

Please see our terms of service for more details. Related Questions. Head gaskets failed how likely is it to happen again? My car won't start by Leonard U. When I drive it and come to a stop with my foot on the brake my car revs up and sometimes shuts off and I have to start up again Chevrolet Impala by Taahir C.

The car has no power, the ignition relay keeps making a clicking noise, and the car won't start by Jeffrey S.I've noticed recently that my car jerks when I apply the brakes to slow down. It is most prevalent when slowing down from approx 45mph, and when they are applied with light pressure stopping for a red light, not hard or super soft braking.

I have made sure it is not me causing it as I have kept the brake pedal pushed with a steady pressure- The car feels like it is automatically pumping the brakes. It isn't caused by the downshifting of the car its an automaticit is definitely something to do with the brakes.

I supposed it should also be noted that it has occured all over, not just on one road. Although it is very noticable on flat, smooth roads with speeds near Stetson- Brakes on a new car last about 30, miles. It shouldnt be time for new ones, thus there shouldnt be any warping of the rotor. That might be an alignment problem which also might irregularly and prematurely wear your tires.

Maybe an alignment would solve that problem, or you might have worn steering parts such as a worn ball joint. You can check the alignment parts yourself, by jacking up the car and wiggling the tires but be aware that tires should wiggle a bit anyway. What you are looking for is unusual movement in any steering part.

It is possible that the problem is in the braking system something might be sticking. Perhaps you have a warped caliper which can warp from heat if the rotors get too thin to properly dissipate heat? You can test which brakes front or back are causing the problem by applying just the rear brakes alone using the emergency brake but just slightly apply the emergency brake so it doesn't grab.

The emergency braking system is by cable, not hydraulics, so it isolates the problem to the brakes, not the hydraulic system. Sounds like warped brake rotors.

You need to install new front brake rotors or take you rotors to a machine tool shop to resurface them. I'm stumped.

I'd have it looked at and when you go make sure you are with the mechanic when he drives it. Anyway, my question is: What would cause this to happen? Update: D E- How clever of you. I know how to drive. Update 2: Stetson- Brakes on a new car last about 30, miles. Answer Save. TardisAndTheHare Lv 7. You can also jack up the car and rotate the tires to see if there is a caliper. How do you think about the answers?

You can sign in to vote the answer. Faulty brake caliper, low brake fluid level, warped rotor, cheapest one first. Shelby Babe. BR Elmeddin.However, sometimes car jerks when accelerating is a common problem faced by several car owners.

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You must be aware of all the feasible reasons behind the problem in accelerating before jumping to the solution. The car jerking problem happens to be an issue common in both manual and automatic cars. What does it mean when your car jerks? Air filters keep the car away from the road pollutants such as dirt, debris and other things that contaminate the engine.

Over time, filters are susceptible to accumulating obstructions and build-ups. In addition to pollutants, dirty air filters are also the cause of inefficient fuel combustion. Therefore, you should wipe those off then check to make sure the symptom will not happen again. For example, Toyota Camry is said that sometimes it jerks when accelerating and the most common reason behind is air filter pollution.

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Furthermore, some people think that Toyota Camry is a bit sluggish when accelerating from a lower speed, so notice to accelerate from a stand still. The primary job of fuel pipes is transferring fuel from one section of the engine to another. It is possible that a car jerks when accelerating due to broken fuel pipes. In fact, the situation may even get worse and cause a fire in the car. Usually, it gets difficult for the car to accelerate due to disruption in fuel transfer.

The internal combustion is susceptible to other major issues, once a fuel pipe leaks. To deal with this problem, check for leaks that may be chewed off by rats. Moreover, owners of old cars should pay attention to this issue because they are likely to faulty flue line. The carburetor blends and regulates the right amount of fuel and air as it goes into the engine cylinders for appropriate fuel combustion.

A damaged carburetor is responsible for poor performance of the car as well. Like a dirty air filter, an improper carburetor also causes car jerking as it disturbs the fuel-air mixture balance.

If you figure out an issue with the carburetor, check the fuel inlet, throttle lever, idle jet or throttle valve. The weather is also one of the major reasons why a car jerks when accelerating.

Obviously, it usually occurs during the winter with vey low temperature when you park your car outside. The solution here is quite simple: prevent to park car in a cold and wet place and try to find warmer spot instead. Gunk or dirt can cause severe problems to your car. A polluted fuel tank, filter or injection system can cause car jerking very easily.

It disturbs the flow and supply of the fuel into the engine. Furthermore, insufficient fuel in the car causes it to jerk as you accelerate the car.

You can buy a special kit solely for injectors in the local hardware store or online and clean that area carefully. If everything comes clean, you must check your engine. Click here!!!

Besides poor engine tuning, one of the most frequent reasons of car jerking when you accelerate is blockage in engine. Jerking happens as gases are not coming out of it when they are supposed to.


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