A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

I replaced my VC gasket sunday afternoon to see if that fixed the misfires...

Thread Tools
 
Search this Thread
 
Old 02-26-2008, 02:56 PM
  #1  
Junior Member
Thread Starter
 
BigBobELK's Avatar
 
Join Date: Oct 2006
Posts: 669
Likes: 0
Received 0 Likes on 0 Posts
Default I replaced my VC gasket sunday afternoon to see if that fixed the misfires...

Ran Vag-Com, no misfires at all for about a day. Now I'm back to square one. Misfires are back and I dont understand why. I have changed the plugs twice and replaced the gasket. The things I have'nt tried are coilpacks and the ICM, I hope its not my ECU.

Why would the misfires stop for about a day and then start back up again after doing a valve cover gasket?

I have'nt tried musical coilpacks mainly because when I run Vag-Com the misfires are always on a different cylinder.

The car is a 98 nDBW QM and I am stumped
Old 02-26-2008, 02:57 PM
  #2  
Member
 
Casablanca Avant's Avatar
 
Join Date: Feb 2003
Posts: 4,779
Likes: 0
Received 0 Likes on 0 Posts
Default I would have started with coilpacks, then the ICM before replacing the

valve cover gasket
Old 02-26-2008, 03:04 PM
  #3  
Junior Member
Thread Starter
 
BigBobELK's Avatar
 
Join Date: Oct 2006
Posts: 669
Likes: 0
Received 0 Likes on 0 Posts
Default The VC gasket was shot, it was leaking oil on the plugs.

Now I didnt change the plugs after doing the VC gasket. So maybe they are still dirty?

Where exactly is the ICM located?
Old 02-26-2008, 03:06 PM
  #4  
AudiWorld Member
 
Beergoggles's Avatar
 
Join Date: Jun 2007
Posts: 504
Likes: 0
Received 0 Likes on 0 Posts
Default

2nd
Old 02-26-2008, 03:06 PM
  #5  
Member
 
Casablanca Avant's Avatar
 
Join Date: Feb 2003
Posts: 4,779
Likes: 0
Received 0 Likes on 0 Posts
Default Can't say about the ICM, I have a 2000 and mine does not have one.

you might want to pull the plugs and see how fouled they are.
Old 02-26-2008, 04:08 PM
  #6  
AudiWorld Member
 
artemm's Avatar
 
Join Date: May 2007
Posts: 502
Likes: 0
Received 0 Likes on 0 Posts
Default

Just throwing this out there... but did you properly gap the plugs?
Old 02-26-2008, 04:11 PM
  #7  
AudiWorld Member
 
artemm's Avatar
 
Join Date: May 2007
Posts: 502
Likes: 0
Received 0 Likes on 0 Posts
Default Oh yeah.. and the ICM from STFA-ing... http://forums.audiworld.com/a4/msgs/1594531.phtml

<ul><li><a href="https://forums.audiworld.com/a4/msgs/1594531.phtml">https://forums.audiworld.com/a4/msgs/1594531.phtml</a</li></ul>
Old 02-26-2008, 04:23 PM
  #8  
Joey T
Guest
 
Posts: n/a
Default Did you get all the oil out of the plug holes after doingthe gasket?

Did you replace the suction jet valve?

What cylinder misfires?


What kind of plugs?
Old 02-26-2008, 06:01 PM
  #9  
AudiWorld Super User
 
Ertman's Avatar
 
Join Date: Apr 2005
Posts: 3,956
Likes: 0
Received 0 Likes on 0 Posts
Default on top of the airbox....

there is a procedure for testing in the FAQ
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
gmanw54
A8 / S8 (D3 Platform) Discussion
7
04-28-2018 08:32 PM
Toiffel
1.8T Discussion
5
01-15-2011 06:37 PM
Toiffel
A4 (B6 Platform) Discussion
5
01-03-2011 04:36 PM
C4mSh4ft
A4 (B6 Platform) Discussion
5
03-05-2009 09:28 PM
djtalon
Audi 90 / 80 / Coupe quattro / Cabriolet
5
03-24-2003 08:04 PM



Quick Reply: I replaced my VC gasket sunday afternoon to see if that fixed the misfires...



All times are GMT -8. The time now is 09:37 PM.