Question about 2001 Ford Focus

1 Answer

How to identify source of rumbling noise when car is moving.

I have a Ford at 51,000 miles.
For the last 10,000 miles, there is an annoying ''drone'' or ''rumble'' type noise that changes as the speed of the car changes. Changing gear or dipping the clutch makes no difference to the noise. The noise is more noticeable at speeds above 40mph.

I think it is either a worn wheel bearing or any transmission part that is related to speed, such as a CV joint.

A basic visual inspection of the front transmission and CV joints show no sign of any problems.

In the past I have diagnosed and fixed a rear wheel bearing on another car. This was easy to source because I could hear and feel it on the wheel as I freely spun it when the car was jacked up.

I have also diagnosed and fixed a front wheel bearing on a different. But I had to spin up each front wheel using the engine as I couldn't detect anything by hand. When one wheel was stopped from spinning, the diff kept the other wheel spinning and vice versa. So, from inside the car I immediately heard the noise stop when the culprit wheel was stopped. The bearing was replaced and all was well.

However, with this car I cannot detect any play by hand or any noise by ear, both front and rear. So I tried the trick as above of spinning the front wheels with the engine, but the traction control and ABS systems don't like it and activate!!! This makes it impossible to detect which front wheel, if any, is the problem.

From inside the car it is impossible to tell where the noise is coming from. There is just a constant drone no matter where I listen to!

How else can I diagnose the problem? I am out of ideas.

Please don't suggest replacing all four bearings or just guessing.

Thanks.

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

My daughter has a 2001 Focus with similar sound, problem.  Just drove it from Portland Oregon to Newport Oregon approx. 140 miles.  Hwy. 20 the route from I-5 to the coast has some pretty sharp corners.  There was this knot head behind me tailgating.  So,coming into the sharp corners I decided to accelerate hard through the corners to gain some distance away from the guy.  Well guess what?  45-50 mph into a 25 mph right hand corner and the noise totally stopped for a few seconds.  I did this again and the same thing...no noise! So, on the next left hand corner I powered into it. The noise increased.  I had the back seats down as well, carting a surf board, which allowed the noise level to be established that it was from the rear of the car.  With the seats up it was impossible to tell where the noise was coming from; But down clearly from the rear.  Now, going through those sharp corners, the right hand corner throws weight to the left front wheel and the right rear tire tends to lift releasing weight pressure on the bearing resulting in the no noise event.  Thus I am absolutely convinced that it is a bearing failure in the passenger side rear wheel. Quit by accident to have stumbled onto this today...amazing!  Now, Looking for directions on how to replace the bearing which is how I stumbled onto this post.  Have a good one!!!

Posted on Oct 05, 2009

Ad

4 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
c17hydro
  • 2984 Answers

SOURCE: 2001 montero/ rumbling noise in front

There are a few things that this could be, and I see that you have replaced a few of the items that it could be but steering systems are a weird thing so here ya go:

  1. Excessive inner CV joint angle
  2. Sticking inboard joint assembly
  3. Lack of lube at the ball joints
  4. Loose upper strut mount
  5. Worn tie rods
  6. Loose stabilizer bar
  7. Loose suspension bolts
  8. And, believe it or not, a blister or bump on the tire
If you got a Chilton's or Haynes manual to do this job, it states in there how much grease should be packed into the bearings. Also, making sure of the length of your CV axle.

Post more info you would like, to pass on.

Posted on Mar 17, 2009

ourhowse
  • 2007 Answers

SOURCE: Rumbling noise on a low speed between 25-40 miles

Does it sound like an exhaust pipe hitting the floor, or is it a different sound?

Posted on Aug 01, 2009

  • 227 Answers

SOURCE: when accelerating, car actually rumbles (shudders)

Look into changing the U-Joints on the drive shaft. You may also have a bad tansmission mount and maybe the motor mounts are bad.

Posted on Aug 08, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Rumbling noise


This problem may be attributed to the tire rubber being hard on a cold morning and softens as the heat in the tires warm the rubber allowing them to be pliable on the road. The hard rubber generates the noise that is transferred through the hard rubber mounts and will do so until all the rubbers heat a little.

Oct 26, 2013 | 2009 Honda Fit

1 Answer

I have an intermittent rumbling noise under the hood in a 1996 Thunderbird 4.6L.


Most likely the valve train

Timing Chain Guides or Cam Actuators

When you don't change oil every 4,000
miles since new & have no idea what oil
has been used over the years & a vehicle
gets older, you those near unfixable issues

Dec 22, 2012 | Cars & Trucks

1 Answer

Wheel making a noise and shaking...


indicates another failed wheel bearing
I would seek an accredited service shop to have the job done as most back yard mechanics will damage a wheel bearing on assembly especially if there is a set preload requirement in the adjustment
in normal operations a new wheel bearing will last well over 100,000 miles but if incorrectly installed using incorrect press and adjustments , will last less that 20,000 miles

Jul 13, 2017 | Cars & Trucks

1 Answer

What are possible causes of a rear end "drone" that doesn't happen every time I drive it, only occasionally?


You need to have the fluid level in your rear differential checked. When you say drone that can also be the fuel pump making a noise. Have you replace the fuel filter in the last 50,000 miles. If not replace it as a partially clogged fuel filter will cause the fuel pump to overwork. It can also be the exhaust system vibrating against the frame. Check the exhaust system mounts.

Apr 25, 2010 | 1998 Chevrolet S-10 Pickup

1 Answer

Rumbling noise on a low speed between 25-40 miles


Does it sound like an exhaust pipe hitting the floor, or is it a different sound?

Aug 01, 2009 | 2006 Saturn Vue

1 Answer

1999 challanger 4x4 has a harmonic rumbling noise that comes in at 75-85klm/hr this causes a droning sound in the interior??


Hi, it sounds like a propshaft u/j/ worn to excss this will give you the vibrations that you discribe.
hope this helps you.
George.

Apr 02, 2009 | 2001 Mitsubishi Montero

1 Answer

Van rumbles and vibrates


Does this van have a carrier bearing in the center of the driveshaft? If it does this could be your culprit,you can tell if it has a carrier bearing by looking at the drive shaft in the middle it will around the driveshaft and bolted to floor support of the van.

Mar 29, 2009 | 2002 Ford E-Series

1 Answer

Humming/droning noise, front driver side.


guess i should make this so you can rate the solution ... thanks

Feb 01, 2009 | 1999 Volkswagen Golf

1 Answer

Engine Drone at 2500 RPM


I would loosen every engine and trans mount and slide a piece of rubber between the mount and the body and retighten,this may change the vibration to level you can live with.

Aug 27, 2017 | 2008 Toyota Camry

Not finding what you are looking for?
2001 Ford Focus Logo

2,407 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

fordexpert

Level 3 Expert

5622 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...