Skip the auto shop - Our mechanics make house calls

Q: When driving and going over 55 mph the car starts shaking like it is going to cut off.

asked by on

When driving and going over 55 miles the car starts shaking like it is going to cut off and starts to slow down as if it is going to stop going.

My car has 88478 miles.
My car's transmission is unknown to me.

A: Hi there! There are several reasons why you...

Hi there! There are several reasons why your TL can act this way.

First off, if this behavior is predominantly after the car has been sitting overnight or longer, it can be the result of "flat-spotting" - the low profile tires, with very stiff sidewall, develop "flat spots" where the tire sits on the pavement. This is overcome with 5-10 miles of highway driving, and the tire heat up a bit, and air pressure in the tire makes them round again.

The second possibility is out-of-balance tire/wheel combinations. Your tire shop can check the balance for you, and correct balance if necessary.

The third possibility is an axle with bad CV joints. If the CV joints are worn, they essentially "wobble", and this vibration is transmitted into the structure of the vehicle - which you could feel both with the steering wheel, and "seat-of-the-pants".

To avoid any unnecessary repairs, I would recommend having the shaking symptom diagnosed by a mobile, professional mechanic, such as one from YourMechanic, to diagnose this problem, get an accurate assessment of damage and cost estimate for repairs.

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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: How much does a app sensor cost and cost to repair

That particular sensor is a dealer item only. You would need to call your local dealer for proper pricing. They should scan and check your car's computer system for the bad sensor by looking at the data output by sensor....

Q: Where is the heater control valve located?

The heater control valve is located in the engine compartment, on the firewall. From the illustration, it appears to be either in the middle of the firewall, towards the top, or on the passenger side. There will be a couple...

Q: Control arm wishbone cracking

Hello. The inspection of the lower control arms are accurate, but what is cracking is actually the bushings in the wishbone's lower control arms. This is a common problem with Audi cars. A certified technician can help you with the...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.