My Car Jerks When Accelerating: How Much Will It Cost to Fix? Replace spark plugs: Between $50 and $150. Clean fuel injectors: Between $50 and $100. Replace air intake system: Between $150 and $500. Replace mass airflow sensor: Between $275 and $400. Replace accelerator cable: Between $100 and $375.
In fact, a blocked fuel filter is the most common cause for a jerking vehicle. Along with jerking, a bad fuel filter will also cause the vehicle to cut out or lose power when driving up an incline. This occurs because fuel demand increases while under load and the clogged filter reduces the flow required.
When your car jerks or stumbles upon acceleration, it usually means something is interfering with the proper distribution and transfer of power. Probably the most benign meaning is if you’re driving a manual transmission and simply haven’t gained the feel of shifting for your particular vehicle.
One of the most common causes of a sputtering engine is an issue with the vehicle’s fuel system—the filter, pump, and injectors. Since the fuel filter, pump, and injectors work together as part of one interconnected system, dirt and debris need only clog one part to cause the others to fail.
An acceleration problem is usually the result of insufficient fuel, air, or spark during the combustion process. A deficient spark plug causes the engine to misfire, making your car jerk when you accelerate. The engine may also be much noisier than it normally is, sounding more like an aeroplane taking off than a car.
Common reasons for this to happen: Clogged Fuel Filter: Over time and through normal use, your fuel filter will become dirty and clogged. When this happens, the flow of gasoline to your engine diminishes, which can cause hesitation and bucking. If they’re worn out, your engine may spit and sputter.
4 Signs Your Transmission is Failing Your transmission is slipping. If your vehicle feels like it’s trying to change gears on it’s own and you can’t stop it, that’s a classic sign of a bad transmission. Shifting is rough. Shifting is delayed. Transmission fluid is leaking.
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.
Symptoms of bad spark plugs can include: Reduced gas mileage. Lack of acceleration. Hard starts. Engine misfires. Rough idling.
If the alternator is not charging the battery and not providing enough voltage into the system then you will get this jerking. If there is not enough power in the system, then the computer will have trouble shifting the transmission properly among other possible issues.
Automatic transmissions that shift hard, jerk or shake during a shift change may mean your transmission fluid needs changed or fluid level is low. In manual transmission vehicles, abnormal gear shifts could indicate damaged gear synchros, worn clutches or other, more severe issues.
Signs a Vehicle has a Bad O2 Sensor Check Engine Light Comes On. Noticeable Loss of Fuel Efficiency. Sulfur or ‘Rotten Egg’ smell from Exhaust. Black smoke from exhaust. Emission levels reach high levels. Your engine hesitates, skips, begins bucking or has power surges.
Causes of a rough idle. Many different problems could result in a rough idle for your car or truck, including: dirty fuel injectors, clogged air filters, bad spark plugs, and a variety of exhaust system issues.
How to Fix a Sputtering Car Engine Inspect the components on the secondary ignition system. Check the resistance of the ignition coil using an ohmmeter. Check the condition of the fuel injectors. Turn on the engine and check the fuel spray pattern on the throttle body injector if your particular vehicle has one.