audi a4 2.0tdi 2005

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

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

80,375

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

109,055

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.

2,815

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:

A4

Looking for a Used A4 in your area?

CarGurus has 9,649 nationwide A4 listings starting at $1,400.

ZIP:

Audi A4 Experts

  • #1
    Deathjam4
    Reputation
    4,370
  • #2
    Tom Demyan
    Reputation
    680
  • #3
    lukeyramone
    Reputation
    640
View All

Related Models For Sale

Used BMW 3 Series
1,037 Great Deals out of 30,174 listings starting at $900
Used Audi A6
114 Great Deals out of 5,587 listings starting at $1,500
Used Audi A3
73 Great Deals out of 5,759 listings starting at $3,200
Used Mercedes-Benz C-Class
680 Great Deals out of 25,587 listings starting at $1,100
Used Audi S4
34 Great Deals out of 1,192 listings starting at $2,999
Used BMW 5 Series
404 Great Deals out of 16,896 listings starting at $1,653
Used Honda Accord
728 Great Deals out of 103,269 listings starting at $999
Used Ford Mustang
303 Great Deals out of 40,193 listings starting at $1,312
Used Dodge Charger
332 Great Deals out of 30,194 listings starting at $2,000
Used Honda Civic
488 Great Deals out of 44,847 listings starting at $1,150
Used Volkswagen Jetta
504 Great Deals out of 28,436 listings starting at $1,653
Used Mercedes-Benz E-Class
388 Great Deals out of 19,587 listings starting at $2,195

Used Cars For Sale

2018 Audi A4 For Sale
4,465 listings starting at $29,498
2017 Audi A4 For Sale
17 Great Deals out of 540 listings starting at $17,980
2016 Audi A4 For Sale
11 Great Deals out of 186 listings starting at $17,120
2015 Audi A4 For Sale
38 Great Deals out of 787 listings starting at $13,688
2014 Audi A4 For Sale
21 Great Deals out of 484 listings starting at $11,300

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.