audi a4 2.0tdi 2005

sarahreade
0

Asked by sarahreade Mar 17, 2013 at 01:49 PM about the 2005 Audi A4 2.0T

Question type: Maintenance & Repair

my audi has started belching out black soot like smoke when not excelerating like turbo lag.the engine
management light came on so we took it to a audi mechanis who changed the air flow sensor.it has
made no dirrerence and the light is back on a week later.any ideas please.

3 Answers

Js08016
20,345

Black smoke is an overly rich air to fuel mixture (too much fuel). Could be a very dirty air filter, bad oxygen sensor, bad fuel injector(s), bad fuel pressure regulator, or bad fuel pump. Those are the things I'd check first. HTH. -Jim

tenspeed
56,775

Check in over at AudiWorld.com and Audizine.com - there's not a lot of information on the Audi diesels in the USA yet. We're about to see many more small block turbo diesels in the near future but we're not there yet.

garageman
1,235

it might help if you know what codes were stored in the engine management computer,way too many codes and procedures to even begin to guess.

Your Answer

Add photo

Related Questions

  • I have a Audi A4 and whenever I accelerate past 20mph it makes a humming noise....What could it be 2 answers

    I have a 2005 Audi A4 Quattro and its making a humming noise when I accelerate past 20mph

    2005 Audi A4 3.0 Quattro Cabriolet

    -

    Maintenance & Repair

  • 2005 Audi A4 burns oil 2 answers

    I have an 2005+ Audi A4 Cabriolet with 1.8 engine and it burns oil at 115,000 miles - about 600 miles now and I need a qt of oil. Will this be an expensive repair or should I be thinking of a new ca...

    2005 Audi A4 1.8T Cabriolet

    -

    Maintenance & Repair

  • 2005 audi a4 1.8T common problems? 1 answer

    I've been looking for an a4 for a while now and I finally found one that I'll most likely buy. But before I do I just wanted to know some common problems that I should be weary of. I know how exp...

    2005 Audi A4 1.8T

    -

    Maintenance & Repair

  • Audi Turbo hesitates on accleration, when hot 1 answer

    2005 Audi A4 Quattro 2.0T has hesitation on acceleration. After 10-15 minutes of drive, hesitation happens when car is in D. Runs smooth when in N or R. Hesitation get worse in stop-and-go traffic, w...

    2005 Audi A4 2.0T Quattro

    -

    Maintenance & Repair

  • Lowering kit 5 answers

    im looking for a good lowering kit for my 2005 Audi a4 but at the same time i dont want to spend a lot of money. any recommendations for a good quality/low budget lowering kit?

    2005 Audi A4

    -

    Car Customization

A4
Looking for a Used A4 in your area?
CarGurus has 11,901 nationwide A4 listings starting at $1,795.
ZIP:

Search Audi A4 Questions

Audi A4 Experts

#1 Deathjam4
Deathjam4
Reputation 550
#2 David Gross
David Gross
Reputation 210
#2 mlp
mlp
Reputation 210
View All

Related Models For Sale

Used BMW 3 Series"
1,439 Great Deals out of 38,537 listings starting at $1,688
Used Audi A6"
133 Great Deals out of 8,958 listings starting at $1,983
Used Audi S4"
51 Great Deals out of 1,926 listings starting at $4,988
Used Mercedes-Benz C-Class"
714 Great Deals out of 21,857 listings starting at $1,500
Used Audi A3"
63 Great Deals out of 8,430 listings starting at $5,995
Used BMW 5 Series"
494 Great Deals out of 16,426 listings starting at $1,500
Used Honda Accord"
1,250 Great Deals out of 68,308 listings starting at $1,288
Used Audi A4 Avant"
27 Great Deals out of 349 listings starting at $7,498
Used Volkswagen Jetta"
1,066 Great Deals out of 37,409 listings starting at $1,399
Used Audi A8"
52 Great Deals out of 2,654 listings starting at $3,500
Used Acura TL"
351 Great Deals out of 6,751 listings starting at $2,200
Used Lexus IS 250"
250 Great Deals out of 9,827 listings starting at $7,000
Used Ford Mustang"
904 Great Deals out of 29,066 listings starting at $1,982

Used Cars For Sale

2015 Audi A4 For Sale
4,886 listings
2014 Audi A4 For Sale
35 Great Deals out of 1,118 listings starting at $24,900
2013 Audi A4 For Sale
27 Great Deals out of 433 listings starting at $20,300
2012 Audi A4 For Sale
61 Great Deals out of 899 listings starting at $16,880
2011 Audi A4 For Sale
41 Great Deals out of 653 listings starting at $12,999