Skip the auto shop - Our mechanics make house calls

Q: Shaking at high speeds.

asked by on

When I'm driving and I get to about 40 mph in my 1999 Ford ranger and it switches into 4th gear my whole truck will shake violently, once I'm in high 4th hear around 45-50 mph it shakes only slightly but not bad, what do you think it could be? I just bought a new battery and got the alternater tested and it's good

Hello There, Shaking at high speeds is often times related to tires that may be out of balance, low on air, potentially a badly aligned front end or failing suspension components or ball joints. When any of these things are not geometrically proper or aligned correctly, this causes an imbalance in the way the vehicle travels down the road and may cause the vehicle to vibrate or shake violently. this type of condition usually gets worse with more speed. I would recommend having a professional from YourMechanic come to your location to diagnose and inspect your vehicle.

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: brake light came on started leaking had brakes fixed should leak stop

Brake fluid leak sources are quite varied and can be traced to tubing perforation due to corrosion, bleeder screw leaks, internal master cylinder leaks, and seal leaks. Any leak of brake fluid is serious and so I recommend that you...

Q: Dashboard lights up automatically when parked overnight

Hello, thank you for writing in. The lights on the dash should only come on when the vehicle has been turned to the accessory position. If the dashboard is lighting up in a similar way, then you want to start...

Q: The truck shakes and there's an imminent smell of gas but no signs of leakage. When accelerating it also backfires multiple times.

Hi there. If there is a smell of fuel in the engine compartment, then the fuel injector o-rings are not sealing and causing the smell of fuel to vapor out. The backfire event is caused by the ignition either being...

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...