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2002 sedan deville, engine started making a "humming" noise on acceleration. Sounds like a low flying plane or distant lawnmower. I rolled the window down while driving and it seems louder from inside. It gets louder and higher pitched the faster I go.

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6ya6ya
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Posted on Jan 02, 2017

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eitan
  • 291 Answers

SOURCE: Engine Making Noise when accelerating

Could be carbon build-up on the pistons, causing erratic flame travel in the combustion chamber... 'pinging'...... Decarbon the engine and use a high grade fuel for a few tanks.... also an octane booster can help

Posted on May 15, 2008

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motor1258
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SOURCE: humming noise in front end/engine fo 2001 Cadillac STS

Keep an eye on your temperature gauge until we figure this out, just in case & see if it climbs much/any at highway speeds.

Posted on Feb 27, 2009

  • 3 Answers

SOURCE: My 04 ford explorer is making a loud humming noise

wheel bearings are worn out on the front, i had the same problem in my 2004 ford explorer just recently.

Posted on May 30, 2009

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SOURCE: Loud roaring noise in front, steering wheel has vibration, replaced tires didn't help.

Wheel bearings are likly and I've changed many to solve this problem but it's esy to pick the wrong one with e vehical jacked and on jack stands suporting the car by the lower control arms ( normal ride hieght) run the car with a driver and listen to ti run , of course theres no load on the powertrain so there will be some lash ( power on to power decline ) cheack up. The roaring noise can be isolated by puting a sounding bar ( long metal rod ( sr=crew driver)) other against the part till the sound is rounded up rear but possible the carrier bearings in the (rear end) front drive. The axel bearings and on some units the carrier bearing thats in the CV axel on the block. Sounding rod will find and change the noisey part. Professional help is a good idea if you can't carry this out saftly

Posted on Aug 19, 2009

  • 7353 Answers

SOURCE: transmission hums. faster the speed higher and

If the trans hums, the problem is in the trans and will have to come out for repairs. You say its not the wheel bearings, but thats a real common problem, and also the tires can make noises like a wheel bearing. Have a Professional check it out.

Posted on Nov 09, 2009

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1 Answer

Front end humming


noise is a bad sign, best is to have mechanic find it
some noises can be very very dangerous to driver for sure
the testing person,
makes noise only moving, in all gears
does it make noise moving in Neutral, coasting,
does doing that, and carefully stalling engine coasting with noise stop the noise.... yes, find a safe place to do that.
i use a steelman electronic stethoscope to find most noises.
it has a clamp on microphone, its like a $35 tools, way less that taking the whole car apart.
it will find which corner or better.
sounds to me like a bad wheel bearing.
or bent backing plate
or caliper guide pins jammed, ,rusted, or bean rotor. or? or ?
if the 4wd is disengaged, the front gears dont turn, so.....
in fact that is it prime purpose... if the the air pump is off and the lever retrated, its off. id check that tool... is front axle decoupled.....
the FSM covers this test in 1 page.
as does alldata.com ,....

Jan 22, 2014 | Jeep Cars & Trucks

1 Answer

2000 Cadillac DeVille sounds like prop-plane on acceleration


Could be the serpentine belt rubbing on something, but is probably a bearing problem in the belt idler pulley. However, it could be the power steering pump, AC compressor clutch or generator. As the water pump is at the opposite end of the engine, it's probably not that.

Apr 18, 2017 | 2000 Cadillac DeVille

2 Answers

Making a loud humming noise accelerating over 30mph. Soon has you reach below 30 mph, the noise stops.... RWD.. Please help!!!! Where do I start??? It sounds like a lawnmower if that helps and I can feel...


It sounds like a bad tire, possibly a broken belt. Check the sidewalls and tread of all the tires for bulges. If good it probably is a bad wheel bearing. Try to isolate from where and what side. If the noise gets louder turning one direction but not the other, then more likely a bearing. If it stays constant both directions but gets louder with speed, then suspect a tire.

Mar 02, 2011 | 1998 Chevrolet Blazer

2 Answers

There is a popping sound coming from the front end of my car when I accelerate but only when my car is moving, not when it is parked. Any ideas?


Sounds like your half shafts are going bad. Does it make this noise when turning left or right? If it does your half shafts have gone bad.

May 06, 2010 | 1992 Subaru Legacy

1 Answer

The motor on my 2002 Deville has begun to hum.


Could possibly be the power steering fluid is low. This will make a humming noise and if it gets louder it could mean that the pump is really low. It is hard to diagnose these types of problems without actually hearing the vehicle run but maybe this will give you a starting point. Sincerely, Roger

Feb 07, 2010 | Cadillac DeVille Cars & Trucks

1 Answer

Engine makes noise when driving


Are you sure it is the engine. Try putting in neutral as you are slowing down. If the noise is still there then it sounds like a wheel bearing failing

Dec 07, 2009 | 2002 Cadillac Deville

1 Answer

2002 grand cherokee laredo humming/grinding


sounds like you have a problem with one of your lines on your power steering or one of its components. the grinding noise could also be one of your pulleys that have gone bad too. check your steering assemby gear box.

Jul 26, 2009 | 2002 Jeep Grand Cherokee

1 Answer

1984 Cadillac Deville Ddiesel


You need to pull the starter out and check the drive gear. If the drive gear is no good you will have to replace the starter. Make sure the cogs on the fly wheel are okay. If the fly wheel is damaged you will have to replace the fly wheel.

Apr 25, 2009 | 1984 Cadillac DeVille

2 Answers

Engine ping when driving 25-30 mph pinging in acceleration


Make sure you are running premium fuel. Also check egr tubes and make sure they are clean and also check egr vlave. May be clogged or just plain worn out.

Sep 05, 2008 | 1995 Cadillac DeVille

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