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
A car fuse breaks, or "blows," when its amperage rating has been exceeded. Repeated breaks may indicate that the replacement fuses do not have the proper rating or that the fuse is connected to an overloaded circuit.Full Answer >
Causes of car heater failure include a blown fuse, low coolant level or a bad vacuum. When replacing a fuse, be sure to use to the correct amperage rating to avoid causing damage to wire components.Full Answer >
A car shudders while accelerating when shocks are bad, tires are inflated improperly or tie road and suspension elements are starting to fail. These conditions are easy to test and exclude certain factors depending on how the vehicle reacts to bumps and bouncing. Try jumping up and down on the rear or front bumper of a car to test its integrity.Full Answer >
The buildup of pressure caused by adding too much coolant to a car can cause the rupturing of hoses, internal pipes and even the radiator. When coolant is added to a car, it is cold, however, while the engine is running, the liquid starts to expand, causing a buildup of pressure. If the radiator is too full, this buildup of pressure is often too great for the internal workings of the car.Full Answer >