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
17,715

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
51,095

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
1,105

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

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 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

  • Sell or Keep? 2005 A4 1.8t 57K miles 1 answer

    Recently purchased. Driven under 6K per year for 4 years, then 25K in 1.5 years. Replaced Transmission, Head Gasket and Alternator. Should I get out now?

    2005 Audi A4 1.8T

    -

    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 9,929 nationwide A4 listings starting at $1,499.
ZIP:

Search Audi A4 Questions

Audi A4 Experts

#1 Deathjam4
Deathjam4
Reputation 390
#2 mlp
mlp
Reputation 190
#3 Tom Demyan
Tom Demyan
Reputation 180
View All

Related Models For Sale

Used BMW 3 Series"
1,462 Great Deals out of 36,158 listings starting at $1,595
Used Audi A6"
133 Great Deals out of 5,382 listings starting at $1,996
Used Audi S4"
51 Great Deals out of 1,469 listings starting at $4,999
Used Mercedes-Benz C-Class"
915 Great Deals out of 19,949 listings starting at $2,399
Used Audi A3"
30 Great Deals out of 5,170 listings starting at $6,995
Used BMW 5 Series"
658 Great Deals out of 17,256 listings starting at $1,500
Used Honda Accord"
1,404 Great Deals out of 73,643 listings starting at $1,000
Used Volkswagen Jetta"
990 Great Deals out of 43,187 listings starting at $1,595
Used Acura TL"
304 Great Deals out of 6,665 listings starting at $1,100
Used Audi A8"
49 Great Deals out of 2,265 listings starting at $1,900
Used Audi A4 Avant"
15 Great Deals out of 354 listings starting at $7,995
Used Lexus IS 250"
248 Great Deals out of 6,110 listings starting at $7,777
Used Volkswagen Passat"
513 Great Deals out of 26,344 listings starting at $1,250
Used Ford Mustang"
1,098 Great Deals out of 25,208 listings starting at $950

Used Cars For Sale

2015 Audi A4 For Sale
2,102 listings
2014 Audi A4 For Sale
16 Great Deals out of 1,756 listings starting at $27,271
2013 Audi A4 For Sale
24 Great Deals out of 467 listings starting at $23,900
2012 Audi A4 For Sale
23 Great Deals out of 518 listings starting at $19,890
2011 Audi A4 For Sale
70 Great Deals out of 1,085 listings starting at $15,800