AudiForums.com

Go Back   AudiForums.com > Audi Models > Audi A4 > B5 Models
Sign in using an external account
Register Forgot Password?
Register Photos FAQ Members Parts Search Today's Posts Mark Forums Read ExperienceGarageUsed CarsVendor Directory
Search
Welcome to AudiForums.com

B5 Models Please discuss all 1996 - 2001 B5 A4 topics here...

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 02-28-2011, 03:19 PM
Bip Bip is offline
1st Gear
 
Join Date: Apr 2006
Location: Boston, Ma
Posts: 243
Default Not all cylinders firing/ egg smell

hey ,
started my car up let it warm up, then pulled out of my driveway to have no power and my check engine light flashing at me. It doesn't seem like all cylinders are firing and it sounds funny. there is also a strong aroma of rotten egg apparent. I was thinking its the coil pack but i had that replaces maybe 3 months ago along with plugs and wires. Car has 88k miles. Any ideas?
__________________
99.5 2.8l 30V quattro
5-speed
custom cat-back exhaust
K&N Cold Air Intake
35% tint all around
M3 lip spoiler
6000k HID's
Yellow Fog's
  #2  
Old 02-28-2011, 03:26 PM
JoBuNY's Avatar
1st Gear
 
Join Date: Sep 2007
Location: Bingo, NY
Posts: 152
Points: 3,510, Level: 37
Points: 3,510, Level: 37 Points: 3,510, Level: 37 Points: 3,510, Level: 37
Level up: 7%, 140 Points needed
Level up: 7% Level up: 7% Level up: 7%
Daily Activity: 0%
Daily Activity: 0% Daily Activity: 0% Daily Activity: 0%
Default

Flashing CEL on my A4 was bad Coil Pack. No power and funny engine sound is the same thing I had as well.

I would check your packs again and make sure one didn't go bad again, of course you don't wanna be driving that car around until you get it fixed.
  #3  
Old 02-28-2011, 03:28 PM
CCA4's Avatar
Trunk Moderator
 
Join Date: Jun 2008
Location: Sterling, VA
Posts: 7,559
ck323k @ck323k
Points: 7,807, Level: 59
Points: 7,807, Level: 59 Points: 7,807, Level: 59 Points: 7,807, Level: 59
Level up: 29%, 143 Points needed
Level up: 29% Level up: 29% Level up: 29%
Daily Activity: 3.3%
Daily Activity: 3.3% Daily Activity: 3.3% Daily Activity: 3.3%
Send a message via AIM to CCA4
Default

rotten egg smell is your cat(s) burning.
__________________

01.5 A4 Avant 1.8TQM: Tuned by K0mpresd|CM FX300 240mm|19lb LWFW|Stėrn|Neuspeed Race|3" RAI TP|Panzer Plate|Red Stuff,A8,TT|K&N|APR TIP|710n|034 Catch Can|Sport Cloth Seat Swap|SSAC cat back

AWM Assembly Manual PDF
  #4  
Old 02-28-2011, 03:33 PM
Bip Bip is offline
1st Gear
 
Join Date: Apr 2006
Location: Boston, Ma
Posts: 243
Default

coil pack could go bad in 3 months? Does that have anything to do with the smell in the cats? I drove the car last night and it was fine
__________________
99.5 2.8l 30V quattro
5-speed
custom cat-back exhaust
K&N Cold Air Intake
35% tint all around
M3 lip spoiler
6000k HID's
Yellow Fog's
  #5  
Old 02-28-2011, 05:28 PM
ImTheDevil's Avatar
Administrator

 
Join Date: Jul 2006
Location: Binghamton, NY
Posts: 11,366
Points: 16,435, Level: 82
Points: 16,435, Level: 82 Points: 16,435, Level: 82 Points: 16,435, Level: 82
Level up: 17%, 415 Points needed
Level up: 17% Level up: 17% Level up: 17%
Daily Activity: 100.0%
Daily Activity: 100.0% Daily Activity: 100.0% Daily Activity: 100.0%
Send a message via Yahoo to ImTheDevil
Default

What year/engine etc is your car? And yes parts can die fast. You also could be dealing with fouled plugs. Or it could be a different cylinder altogether.
  #6  
Old 02-28-2011, 10:26 PM
JoBuNY's Avatar
1st Gear
 
Join Date: Sep 2007
Location: Bingo, NY
Posts: 152
Points: 3,510, Level: 37
Points: 3,510, Level: 37 Points: 3,510, Level: 37 Points: 3,510, Level: 37
Level up: 7%, 140 Points needed
Level up: 7% Level up: 7% Level up: 7%
Daily Activity: 0%
Daily Activity: 0% Daily Activity: 0% Daily Activity: 0%
Default

Egg smell is cat like CCA4 said.

When my coil pack went bad it was only in Cylinder #2 and it was while I was driving home. I drove to work that day and it was just fine, went to lunch and it was fine, left work for the day and boom misfire with flashing CEL. If you move the Coil Packs around you could possibly track down what one is bad.

The smell could be coming from trying to drive the car still and it's not firing correctly, before driving it you definitely need to figure out what is bad or your could do serious damage to your motor.
  #7  
Old 02-28-2011, 10:52 PM
Bip Bip is offline
1st Gear
 
Join Date: Apr 2006
Location: Boston, Ma
Posts: 243
Default

apparently i have a one year warranty on the coil pack so my car is being towed to a garage and hopefully that is all that is wrong. Thanks for the help
__________________
99.5 2.8l 30V quattro
5-speed
custom cat-back exhaust
K&N Cold Air Intake
35% tint all around
M3 lip spoiler
6000k HID's
Yellow Fog's
  #8  
Old 03-02-2011, 01:50 PM
A4Cragman's Avatar
2nd Gear

 
Join Date: May 2008
Location: SLC, Utah
Posts: 1,031
Points: 6,169, Level: 51
Points: 6,169, Level: 51 Points: 6,169, Level: 51 Points: 6,169, Level: 51
Level up: 10%, 181 Points needed
Level up: 10% Level up: 10% Level up: 10%
Daily Activity: 0%
Daily Activity: 0% Daily Activity: 0% Daily Activity: 0%
Default

To the more knowledgeable people that have posted in this thread, when I first read 'egg smell' my first thought went to a bad battery; as the unmistakable stench of leaking sulfuric acid from the battery is that of rotten eggs, and by process of logic, a bad battery could be resulting in not enough current hitting the plugs to ignite the fuel and thus cause the misfires. I then read that apparently a fouling cat can make the smell as well, and what you've said makes sense, but I just wanted to check if I may or may not have a reasonable track of thinking going on here?
__________________
'07 A4 2.0tQM|112,xxx|Debadged|Tint|AudiUp Snub/Heat Shield/Boost hoses|LED lighting|RAI Downpipe/HFC|034MS Rear Sway Bar
'98 A4 2.8 30vQM|207,xxx|STchip|S4catback|SS|Cosmetics - For Sale


Quote:
Originally Posted by bradtyler02
Drinking decaf is like putting 85 octane in your Audi. Sure, it will run, but why bother?
  #9  
Old 03-02-2011, 01:55 PM
JoBuNY's Avatar
1st Gear
 
Join Date: Sep 2007
Location: Bingo, NY
Posts: 152
Points: 3,510, Level: 37
Points: 3,510, Level: 37 Points: 3,510, Level: 37 Points: 3,510, Level: 37
Level up: 7%, 140 Points needed
Level up: 7% Level up: 7% Level up: 7%
Daily Activity: 0%
Daily Activity: 0% Daily Activity: 0% Daily Activity: 0%
Default

A4Crag,
Your thought could make sense except for he listed "check engine light flashing", usually that is misfire caused by plugs or coil pack gone bad.
  #10  
Old 03-02-2011, 02:36 PM
A4Cragman's Avatar
2nd Gear

 
Join Date: May 2008
Location: SLC, Utah
Posts: 1,031
Points: 6,169, Level: 51
Points: 6,169, Level: 51 Points: 6,169, Level: 51 Points: 6,169, Level: 51
Level up: 10%, 181 Points needed
Level up: 10% Level up: 10% Level up: 10%
Daily Activity: 0%
Daily Activity: 0% Daily Activity: 0% Daily Activity: 0%
Default

True, but I thought the codes flashed just for the fact that the misfire was detected, regardless of the actual cause, cuz the way I'm seeing it, if the coil pack isn't getting enough current from the battery, it wouldn't be able to ignite the spark, causing the misfire, and if it were the battery's fault, that code would still flash that it was misfiring no different than if the battery were fine and it really is a bad coil.

But that's where my uncertainty is and why I'm asking about it; I don't know for sure that the power delivered by the coil is taken from the battery. I've never gotten a solid answer as to if the battery simply provides the means for cranking and after that the ignition is run purely from the alternator, or if ignition is run from the battery after cranking and the alternator simply keeps the battery charged. If the ignition is driven by the alternator after cranking, then my idea is debunked; a bad battery would have nothing to do with a misfire generated by there not being enough power to create a spark since the spark would be relying solely on the alternator, and if that is the case, then yes, I would put my money on it being the coil's fault, but up until now, I've been under the impression that the coils are powered from the battery and thus a bad battery could be causing insufficient power to create a spark, causing a misfire, causing a flashing cel. Am I making any sense at all? lol
__________________
'07 A4 2.0tQM|112,xxx|Debadged|Tint|AudiUp Snub/Heat Shield/Boost hoses|LED lighting|RAI Downpipe/HFC|034MS Rear Sway Bar
'98 A4 2.8 30vQM|207,xxx|STchip|S4catback|SS|Cosmetics - For Sale


Quote:
Originally Posted by bradtyler02
Drinking decaf is like putting 85 octane in your Audi. Sure, it will run, but why bother?
Old 03-02-2011, 02:36 PM
 
 
 
Reply


Tags
2, 28, a4, audi, audia4b5misfiresulphursmell, b5, car, cylinder, cylinders, egg, eggs, fire, misfire, rotten, smell, working


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Advertising

Featured Sponsors
Vendor Directory
New Sponsors

All times are GMT -4. The time now is 03:13 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO ©2010, Crawlability, Inc.
© Internet Brands, Inc.
Emails Backup