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Posted on Aug 10, 2008

Audi A4 erratic humming

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?

5 Related Answers

Anonymous

  • 1586 Answers
  • Posted on Aug 14, 2008

SOURCE: Oil for 2007 AUDI A4 2.0t Quatro

The best balance of price, quality, availability that I have found is Mobil1 synthetic - it's on Audi's approved oils list. With the 2.0T engine, you absolutely want to use synthetic (the Audi turbo fours are known for oil sludge issues), and you want to do a SeaFoam treatment every 15k miles or so - that combination will keep your engine in great running shape.

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colin white

  • 345 Answers
  • Posted on Oct 25, 2008

SOURCE: audi a4 front lights

if you mean the complete light you will have to remove front bumper then you will get to the bottom bolts that hold the headlamp in.....

Anonymous

  • 184 Answers
  • Posted on Jan 03, 2009

SOURCE: 2005 Audi 1.8 a4 check engine light on and car now spudders??

FYI also when you get those codes you can look them up and get their description at http://www.check-engine-light.com

Anonymous

  • 1586 Answers
  • Posted on Feb 10, 2009

SOURCE: Core Support and Radiator Replacement , Audi A4 Quatro 1.8

Very easy - the car is designed to have these parts as being removable for the timing belt service. Opening the car is called the "service position" and involves taking these parts nearly off the car. Use the link below (it's a link to a DIY procedure for doing the timing belt on the car) - it'll show you what to do in order to remove the front clip of the car and remove the core support and radiator.

http://www.audiworld.com/tech/eng35.shtml




Anonymous

  • 463 Answers
  • Posted on Mar 13, 2009

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?

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Related Questions:

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2001 Audi A4 Quattro 1.8. Guys, I have looked for this question even here and I can not get a clear and transparent answer.

You make it sound like it's our fault you can't find it :>D

The start of production of the Audi A4 B5 is 1994. With minor changes, it was produced until 2001. At first, only the sedan version was available, the station wagon (Avant) appeared a year later. This material provides information on relay circuits and fuses Audi A4 b5 1994, 1995, 1996, 1997, 1998, 1999, 2000, with an assignment of their elements and locations.

Can't get much clearer than this. Relay 4 is one plus 'Additional Relays 23 and 24. Plus fuse 23 and 24.

Fuse box diagram Audi A4 B5 and relay with assignment ...

https://fuseandrelay.com > audi > a4-b5

This material provides information on relay circuits and fuses Audi A4 b5 1994, 1995, 1996, 1997, 1998, 1999, 2000, with an assignment of their elements and ...
‎Passenger compartment · ‎Main fuse box · ‎Relay box · ‎Engine compartment
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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.
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Owner replaced heater core on a 2000 Audi A4 and car won't start

check your ignition fuse under the hood and replace it : )
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200 AUDI A4 WILL NOT START AFTER BATTERY CHANGE

make sure you have the correct battery for you car.
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2000 audi a4- humming noise coming from rear of car

It could be a unevenly worn tire or a bad wheel bearing.
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Audi a4 camb timming

Hi,

Audis are not very common in mycountry but from what I can gather:

Themark for the crankshaft gear is on the cover you have to remove inorder to get at the timing belt. The sprocket you may be having troublewith is the intermediate shaft (in front of the water pump) and I don'tbelieve that one matters at all since it doesn't drive any of the cams.The intake cams are driven by a chain off of the exhaust cam shaft soonly the exhaust cam is driven directly by the timing belt.

Additionally, you may benefit from the Audi A4 Service Manual and/or Audi A4 Cabriolet Workshop Manual.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.
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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.
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2000 audi a4 low erratic humming noise

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 ?
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