Q: Truck shaking at steady speeds at about 40 kmph

asked by on

My car has an automatic transmission. I have a problem with the truck shaking at times when I drive steadily at about 40 kmph. At times, it feels as though it has a manual transmission and as if I didn't pressed the clutch--like it is going to die out completely. Therefore, I have to do either downshift to D3 or press the overdrive so that it stops shaking. Other than this, the vehicle runs fine. Do you have any suggestions?

Erratic shifting into gears too early will cause overloading of the engine and the shaking you feel. An engine that misfires under load may miss when at this speed before shifting into overdrive. If the transmission is shifting into overdrive before 40 mph then the vehicle speed sensor or transmission input speed sensor may be giving incorrect readings. Have the engine mounts checked to make sure there is no corrosion or pin and socket problems. A certified mobile mechanic can inspect and diagnose what’s causing your truck to shake.

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. Truck shaking at steady speeds at about 40 kmph

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 hesitating and shaking.

A lot of things could cause the problems you are having from a vacuum leak to a idle air control valve. My best advice is have your vehicle diagnosed firsthand but a trained professional, such as one from YourMechanic.

Q: Q: Service Engine Light is on

This indicator is part of the onboard diagnostics (OBD-II) system, and in all cases, it indicates a problem with your emissions system. Basically, it is an emissions monitoring system. A Check Engine indictor will stay solid or blink. If the...

Q: Misfire at cylinder #6 and EVAP system not ready

Hello. The misfire that you are getting on that cylinder may be caused by a dirty or failing fuel injector. If compression is fine and if there is good ignition then it may be a fuel issue. If the engine...

Related articles

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...
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.