Q: Q: Jerking reaction when accelerating

asked by on

Car has cut out while driving at around 40mph, battery light cane on when this happened started car again while rolling still and started fine. Will sometimes start and run smooth other times starts and runs with like a slight vibration, like its about to cut out but doesn't. And while driving will randomly like mimic a bunny hop type action, its like a 3 beat du du du n then the car continues driving normally, best way I can describe it is either someone who's heavy footed hitting accelerator too hard or dipping the clutch and not pressing the brake quick enough n you get that judder before its about to stall, it doesn't happen every day or all the time it's random

My car has 155000 miles.
My car has a manual transmission.

This may be related to a faulty throttle position sensor or potentially a dirty or failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected into the motor. When this is dirty or faulty, this causes an imbalanced air/fuel load to be supplied to the motor which results in an over fueling or under fueling situation depending on the conditions. This type of inconsistent fuel supply to the motor may cause a hesitation, loss of power, a jerking reaction, potentially a bit of black exhaust smoke and typically a strong smell of fuel when this sensor is malfunctioning. When this is not working properly, you may also notice a strong smell of fuel. I would suggest having a professional from Your Mechanic come to your home to diagnose your mass air flow sensor.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: Jerking reaction when accelerating

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car temperature gauge is halfway. I just changed the thermostat. Why isn't it going down?

Hey there. There are a few other reasons aside from the thermostat that may cause the car to overheat such as a clogged radiator or potentially a faulty coolant fan switch. A clogged radiator may prevent the coolant from flowing...

Q: Car using a lot of oil - 2013 Volkswagen Touareg

Some manufacturers absolutely design their vehicles to consume oil as a normal engine function. Volkswagen has a tendency to do this. If not by design, there are several things to take a look at. Bad gaskets will allow the oil...

Q: Car wont start even after new battery and new starter

Hi Joel. Thanks for contacting us today. If you can "bump start" your car, but will not start when you turn the ignition, it's possible that your root issue is an ignition or starter relay that is damaged. The first...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.