Moisture in the distributor cap can cause a car to jerk when accelerating. When a car has been parked overnight in cold temperatures, moisture can form inside the distributor cap, causing the engine to misfire when accelerating. A misfire occurs because the engine power is off balance or uneven. Parking a vehicle in a garage or a warmer environment helps prevent moisture from forming.Know More
If the vehicle continues to jerk while accelerating gradually over a prolonged time period, a vacuum leak may be the cause. A vacuum leak occurs when the fuel system creates a vacuum in the engine, causing the vehicle to spring forward when the gas pedal is pushed. The vacuum leak sends an incorrect amount of fuel to the engine, causing the vehicle to jerk when accelerating.
If the vacuum leak is not the cause, a car may also jerk when accelerating if it has a faulty throttle position sensor. This occurs in vehicles equipped with a fuel-injection system. Once the gas pedal is pushed, the data in the sensor allocates a certain amount of fuel to disperse. When the throttle position sensor is faulty, it transmits incorrect data, which in turn sends the wrong amount of fuel to the engine.Learn more about Car Parts & Maintenance
Common causes of stall during acceleration for a fuel-injected vehicle include moisture in the distributor cap and a worsening fuel-system vacuum leak. Excess moisture in the distributor cap typically makes the problem most noticeable in the early mornings or on rainy days. Vacuum leaks tend to start out unnoticeable and develop symptoms that increase in frequency and intensity over time.Full Answer >
A loose or slipping engine belt or a misaligned accessory drive pulley could cause a car to squeal upon acceleration. Engine belts and drive pulleys are used to power the water pump, air-conditioning compressor and the alternator of an automobile.Full Answer >
There are various reasons why vehicles shake while accelerating and some of them include a clogged transmission filter, a worn-out universal joint and low transmission fluid. The common type of vibration is mainly felt through the steering wheel of the car as it accelerates, and it is a very dangerous condition because it can cause unstable conditions that can lead to loss of control especially when avoiding a collision or making a sudden turn.Full Answer >
If a car jerks while driving, this is a strong sign of engine trouble. It could be caused by a spark plug malfunction, clogged fuel lines or fuel filter, a glitch in the vehicle's computer or from many other issues, according to HowStuffWorks. Regular oil changes and other preventative measures help to keep this from happening.Full Answer >