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
27,165

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
63,825

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
1,495

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

  • MY AUDI A4 1.8T JUST CUFF OFF WHILE DRIVING 1 answer

    Few days ago my audi A4 1.8t displayed the epc light an while i was driving it just cuff off and could'nt start it for about 15minutes and this probleblem have re occuring since please help

    2005 Audi A4 1.8T

    -

    Maintenance & Repair

  • audi a4 o5 plate

    hi i have a audi a4 1.9tdi parked it up at night and wont start in the morning when I turn it over red brake circle comes on

    2005 Audi A4

    -

    General

A4
Looking for a Used A4 in your area?
CarGurus has 10,447 nationwide A4 listings starting at $1,795.
ZIP:

Search Audi A4 Questions

Audi A4 Experts

#1 Deathjam4
Deathjam4
Reputation 780
#2 mlp
mlp
Reputation 240
#3 David Gross
David Gross
Reputation 220
View All

Related Models For Sale

Used BMW 3 Series"
1,377 Great Deals out of 35,174 listings starting at $1,000
Used Audi A6"
165 Great Deals out of 8,437 listings starting at $1,500
Used Audi S4"
69 Great Deals out of 1,566 listings starting at $5,595
Used Mercedes-Benz C-Class"
910 Great Deals out of 22,802 listings starting at $2,451
Used Audi A3"
75 Great Deals out of 8,122 listings starting at $5,500
Used BMW 5 Series"
724 Great Deals out of 17,533 listings starting at $2,500
Used Honda Accord"
1,156 Great Deals out of 61,708 listings starting at $900
Used Acura TL"
296 Great Deals out of 5,915 listings starting at $2,000
Used Ford Mustang"
517 Great Deals out of 34,493 listings starting at $145
Used Lexus IS 250"
275 Great Deals out of 8,456 listings starting at $8,942
Used Volkswagen Jetta"
694 Great Deals out of 35,568 listings starting at $988
Used Audi A4 Avant"
21 Great Deals out of 329 listings starting at $5,978
Used Audi A8"
67 Great Deals out of 2,280 listings starting at $4,995

Used Cars For Sale

1998 Audi A4 For Sale
30 listings starting at $2,990
1999 Audi A4 For Sale
37 listings
2000 Audi A4 For Sale
34 listings starting at $3,499