Skip the auto shop - Our mechanics make house calls

Q: Car shakes when at 40mph i added some trans fluid because it was missing some and thats when it started shaking

asked by on

My car is shaking at 40 mph i just added some more trans fluid because i was leaking some the whole steering wheel shakes at 40mph but when i go past that it stops what could this be

My car has 153000 miles.
My car has an automatic transmission.

Hi there. The most common cause of this is a tire balance issue. I would typically start by checking the balance of the tires to see how they are. I would inspect the tires at the same time as a failing tire will also cause this. If everything with the tires are fine then I check the front suspension for worn out parts as well as a failing front bearing or a warped wheel hub. All of these will cause this to occur. If you are going to have this high speed shaking checked, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair this.

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!
  • Home
  • Questions
  • Car shakes when at 40mph i added some trans fluid because it was missing some and thats when it started shaking

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: What else can it be?

From what you've described, this sounds like potentially a power steering pump issue since the noise increases with speed which indicates it may be something related to the speed of pulley components. I would check power steering fluid levels to...

Q: Has no power there are traces of gasline in the engine oil

Hi There, It sounds like you may have a leaking fuel pressure regulator. The fuel pressure regulator is a device which controls the pressure of fuel supplied to the fuel injectors on an engine. This works by bleeding off a...

Q: My daytime running lights won't come up,but why?

Hi there. I performed some research on your model and consistently keep finding that there are no daytime running lights on the U.S. model; seems strange. It doesn't seem to matter which version it is, just the market. Should this...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...