Skip the auto shop - Our mechanics make house calls

Q: Shaking while stopped, difficult acceleration, sudden takeoff

asked by on

My car runs fine generally. However, the other day, there was a lot of shaking when I stop the car. It would shake for a few seconds, then stop, then shake again and so on, the whole time the car is stopped. The shaking was very noticeable. Afer that, I had difficulty accelerating but the car took off suddenly. What could be cuasing this? What do I check first? Thanks.

It sounds like you may be experiencing an engine misfire. When a cylinder in your engine is misfiring, it will throw off the balance of the running engine. As a result, vibrations can be felt throughout the vehicle. This would also explain your trouble accelerating.

If the engine only has one cylinder misfiring, sometimes at higher RPMs, it will not be as noticeable and the engine may seem to run normally until lower RPMs or speeds are reached. This is another reason that your vehicle will accelerate suddenly after a moment of pressing on the gas pedal.

I would recommend having your vehicle scanned with an OBD-II scanner by a professional to check for a misfire code. If a misfire code exists, have your spark plugs and ignition coils inspected in order to get a proper diagnosis for your car’s acceleration issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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 overheated - 2004 Honda Civic

Before we get into the ignition issue, please note that if the car engine SEVERELY overheated the head and/or block, then this could have warped thus creating the potential (or actual) head gasket leaks, exhaust manifold leaks, and so forth....

Q: Thumping and shaking noises - 2013 Jaguar XK

If you are feeling this "shaking" through the steering wheel as well as "seat of the pants", it is likely your tires. While siting overnight, especially in cold weather, they develop a short-term "flat spot" where the tire rests on...

Q: i think its a wheel bearing but when i drive, especially the faster i go, you can hear a whirling sound almost like it sounds as i

A bad wheel bearing or bearings, can make a loud humming sound to an almost grinding sound. The sound will change pitch and volume with speed and sometimes when the car is moved side to side, like when changing lanes...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...