Q: My car does a little jerk between 30 and 40 mph then it goes away when I speed up? There are no engine lights on or anything so wh

asked by on

No engine lights on but it does this small jerk between 30 to 40 mph just jerks one time but after I speed up it doesn't do it and it does it every once in a while not every time I drive it.

My car has 67000 miles.
My car has an automatic transmission.

The jerking could be due to the turbocharger (if equipped) or it could be a transmission shift issue. If turbocharger related, it is probably "normal". If transmission related, some tests would have to be performed to determine the cause and the possibility of ECU/TCM software updates should be considered. To distinguish between the two broad possibilities (engine, if turbocharger equipped, versus transmission) requires that a mechanic drive the vehicle. If you desire a diagnostic, please schedule via YourMechanic’s automatic transmission shift diagnostic service request page. If you have further questions or concerns, do not hesitate to re-contact YourMechanic because we want you to make the most of your repair dollars and help you to get the best possible results.

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. My car does a little jerk between 30 and 40 mph then it goes away when I speed up? There are no engine lights on or anything so wh

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: Can smell gas fumes while driving

Hello! Low refrigerant levels is the leading cause for your air conditioning concern. Low refrigerant levels will cause the air to fluctuate between warm and cold. Usually, low refrigerant levels are caused by leaking O-rings in the AC system. The...

Q: Can't find the fuel leak detection pump

Hi there. The fuel leak detection pump is located next to the fuel tank and the frame under the vehicle. It is a small plastic item with 2 hoses attached to it. It will also have a wire harness connected...

Q: No rear lights of any kind or working. ( No running, brake, or signal lights)

Check the ground wires on the back of the vehicle as they are either broke or loose. Over time the bolt that holds the ground wire to the frame tends to become rusty causing the ground to have a high...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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.