Q: Thunking noise in rear of the car.

asked by on

From a dead stop, when initially accelerating, there is a thunking noise in the rear of the vehicle. It is not the brake calipers, rotors, or brake pads. Could this be the load-leveling shocks deteriorating? This only happens from a dead stop. It does not happen when accelerating while in motion.

My car has 36000 miles.
My car has an automatic transmission.

Hi there, thanks for writing in. This thunking noise is a common problem when U-joints (driveshaft) are worn out. I would recommend having them inspected to be sure they do not have too much play in them. When there is too much clearance in these, they will cause the thunking sound you are describing, especially when accelerating. If there is something wrong with these U-joints, you may need to replace them. If you’d like help investigating the noise or U-joints, have a certified automotive technician come to your home or office to diagnose and repair the issue for you.

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. Thunking noise in rear of the car.

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: Q: Idle fluctuates and then stalls.

It sounds like you may have a dirty or failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and...

Q: Screeching metal sound

The power steering fluid you keep adding has to be going somewhere and it most likely leaking from one or more places. Typically the power steering pump, high pressure line and power rack and pinion are common failure items. Have...

Q: How do I turn on the hazard lights?

The hazard lights are an important safety feature. When the hazards are turned on, all four turn signal lights flash simultaneously, to alert surrounding drivers that there may be an emergency. To turn on the hazard lights, press the Hazard...

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...
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...
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.