Question about 2006 Audi A4

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2000 audi a4 low erratic humming noise

My 2000 audi a4 is making a erratic humming noise when in park and drive. It started making this noise after I had driven my car in low gear on a windy mountain road. When the car is in park i press the gas and as the car is winding up it makes the erratic noise, when I let go of the gas and it comes back down to idle it sound like it wants to back fire. I have checked all the coil packs and they are working fine. Is this a transmission problem?

Posted by marbet on

  • sikhwitit Nov 10, 2008

    I have the same problem with my 2005 Audi A4 3.0. As soon as the car is started the noise starts - it's a high pitched sound.

  • Anonymous Feb 19, 2009

    The same thing happened with my 2005 audi A4 1.8l. I have been told it is the fuel pump, but when mine was replaced, it continued to make that noise. Still have no idea what is wrong.

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1 Answer

SeabeeMechanic

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  • Audi Master
  • 1,367 Answers

Could be a transmission issue. Did you hit any objects while driving ? Have you performed a visual inspection under your vehicle ? Have you checked to see if you have any loose vacuum hoses ? Any codes in your engine control module or transmission control module ?

Posted on Jun 22, 2017

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5 Related Answers

Cary

  • 114 Answers

SOURCE: I have a 1998 Audi A4. My central lock stopped working

The humming is the central lock vacuum pump running..You either have a leak in one of the lines, or one of the hoses has popped off

Posted on Sep 18, 2009

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colin white

  • 345 Answers

SOURCE: Faulty Engine

v v t turbo fitted to that,the vains will have become stuck try freeing them off if you carnt its a new turbo !

Posted on Dec 11, 2008

Anonymous

  • 1 Answer

SOURCE: 1996 Audi A4 Quattro has a noisy rear differential

It's the wheel bearing. Guaranteed. Just replaced mine. Go to Audiworld tech articles for step by step instructions on how to test the wheel bearings. They must have been put in wrong last time or they just went out again.

Posted on Jan 28, 2009

Anonymous

  • 463 Answers

SOURCE: 1996 Audi A4 Automatic transmission wont shift when cold

Silly question: Have you checked the transmission fluid level, and is it to manufacturer's spec?

Posted on Mar 13, 2009

csmock132

Clint Smock

  • 4669 Answers

SOURCE: 2000 audi a4- humming noise coming from rear of car

It could be a unevenly worn tire or a bad wheel bearing.

Posted on Mar 27, 2009

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1 Answer

I have no gears on my audi a4 1.8t auto, it has a


Definitely mechanical. The grinding noise when put into park suggests that you have a bad final drive part. Are both front axles still bolted to their yokes? There's a really common issue with axles in VW/Audi cars.

Oct 20, 2013 | 2001 Audi A4

1 Answer

AUDI A4 1.8T THE TIPTRONIC SHIFTS HARD FROM PARK TO DRIVE (BUMPS /JUMPS INTO GEAR AT IDLE WHEN SHIFTED)


It sounds like your transmission needs a rebuild. It could also be a loose linkage, or low transmission fluid. Check both of those first.

Feb 06, 2013 | 2002 Audi A4

1 Answer

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Check the trans gear oil!!!
Also the cables from the shifter to the trans actuate levers on the trans that sometimes stick. Check the levers.

Dec 09, 2009 | 1996 Audi A4

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Audi a4 1999 automatic


that would be a good start sounds more like a shift solenoid going out on you though go for the fluid flush first though.

Sep 16, 2009 | 1996 Audi A4

1 Answer

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I hope that you had the proper weight oil installed, at your oil change. If your oil is up to the proper level, and it's rattling ,this is VERY bad. White smoke usually means steam in the exhaust, and that means a blown head gasket. Check your coolant level. I wouldn't drive it anymore......until someone knowledgeable can diagnose it!!!!!

May 30, 2009 | 2000 Audi A4

3 Answers

2000 audi a4- humming noise coming from rear of car


It could be a unevenly worn tire or a bad wheel bearing.

Mar 27, 2009 | 2001 Audi A4

4 Answers

1996 Audi A4 Quattro has a noisy rear differential


It's the wheel bearing. Guaranteed. Just replaced mine. Go to Audiworld tech articles for step by step instructions on how to test the wheel bearings. They must have been put in wrong last time or they just went out again.

Oct 13, 2008 | 1996 Audi A4

1 Answer

Suspension


What kind of noise? Is it a humming noise that gets louder as the road speed increases? If so, it's a wheel bearing - A4s eat wheel bearings like popcorn.

Aug 16, 2008 | 1998 Audi A4

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