Skip the auto shop - Our mechanics make house calls

Q: my van is making clunk and vibration noises that worsen while coasting or with less rpms

asked by on

my van is making clunk and vibration noises that go away if i am gaining speed and rpm but becomes severely worse when the rpms level out at a travel speed. it also worsens when coasting. when the rpms are low the vibration is high. it is strong enough that i feel it in the floorboard and the steering wheel as well as in the cabin of the van in general. It becomes louder the slower you coast and almost violent when the breaks are applied at any speed. it literally sounds as tho the whole front end of the van is beating itself apart. the front tires have been replaced and balanced, the brake pads and rotors have been replaced and re-inspected, Inner and outer tie-rod ends have been inspected and do not appear to be the culprit. the speed of the vibration and thunky noise increases as the vehicle loses speed via disengaging the accelerator pad or by applying the brakes. But if you accelerate quickly is subsides again until you begin to lose rpm and speed again.

My car has 226875 miles.
My car has an automatic transmission.

Hi there. It sounds like the transmission is having an internal failure. Some other possibilities are wheel bearing, axle, brake caliper, and brake hose collapsing. A worn wheel bearing will have noise at all speeds while increasing noise and vibration at higher speeds. A faulty axle usually vibrates on acceleration and can make a lot of noise while turning. A sticking brake caliper will cause a pull and sometimes smoke or burning smell. A collapsed brake hose will cause the same symptoms of the brake caliper sticking as it will not allow the return of brake fluid pressure to release the pads. With what you’ve described and knowing that these vehicle are known for transmission problems, I would have a qualified technician perform an inspection to properly diagnose the concern and avoid replacing unnecessary parts. Your Mechanic has several available technicians that can assist you with a car vibrates inspection.

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!
  1. Home
  2. Questions
  3. my van is making clunk and vibration noises that worsen while coasting or with less rpms

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: jeep won't get out of park and dash instruments not working.

Hello, thank you for writing in. The vehicle is likely going to be having electrical issues pertaining to a fuse, relay, or fusible link. When multiple systems are experiencing issues, there is typically something they have in common that has...

Q: I did a diagnostics test and the code was P0562. The fan stays on, what can I check to fix the problem?

Hello. P0562 is the trouble code for low system voltage. If the computer detects that the overall electrical system's voltage is low, it will set off the Check Engine Light to notify the driver of the issue. The most common...

Q: 2007 Town and Country randomly turns off during driving

It is a 2007, so it's reasonably new. The data on that thing is pretty strong. We mechanics have dealer-level computers that can analyze everything that is happening with the car. They call it stored axle codes, and since it's...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...