Q: My 2001 Volvo s40 males a loud thud every time I put it in drive. What could it mean?

asked by on

As it says, no issues other than a loud thud every time I put it in drive.

My car has 160000 miles.
My car has an automatic transmission.

The CV axle joints should be inspected for wear and/or damage. Putting the transmission into drive suddenly loads the joints and if there is looseness in those joints, as the play is suddenly taken up you can hear a thud. If the axles are good, it is possible that the thrust clearance in the transmission has grown beyond spec. That could be due to accumulated wear over the 160,000 miles you have traveled. Another common possibility is a worn, broken or mis-positioned motor or transmission mount. You should also check the fluid level in the transmission. Finally, if the engine idle speed is too high, that can cause harsh engagement and possible noises. I suggest you request a transmission noise upon engagement diagnostic and if the issue is not found there the Mechanic will evaluate the motor mounts, and cv axles, and also confirm whether your idle speed is correct.

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. My 2001 Volvo s40 males a loud thud every time I put it in drive. What could it mean?

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: There is a humming coming from the front tire. I checked the tire for a possible wheel bearing issue but the vertical shake of tire was solid.

A tight feeling when shaking the tire vertically does not always completely rule out the wheel bearing. A technician with a stethoscope or electronic hearing device can listen to the wheel as it is rolling and compare the type of...

Q: If i replace transmission and motor mounts do I need to replace the transmission also?

It doesn't sound like there is any reason for you to replace the transmission. The motor mounts and transmission mounts are flexible rubber supports that keep the engine and transmission in place while preventing their vibration from getting to the...

Q: A scanner found the code P02B4, what does it mean?

That is an interesting code since your engine only has 4 cylinders. It is possible that the vehicle has the wrong information stored in the computer and is throwing a code for a V-8 engine. I recommend having your computer...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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.