Volvo S80 A performance sedan that offers top notch luxury, outstanding handling and so much more.

1999 S80 2.9 fouling plugs 1, 2, 3

  #1  
Old 09-23-2014, 02:36 AM
Junior Member
Thread Starter
Join Date: Sep 2014
Posts: 1
Default 1999 S80 2.9 fouling plugs 1, 2, 3

Hi guys,

I have a 1999 S80 non-turbo 6 cylinder which is fouling plugs on bank 1, idling rough as guts and lost most of its power.

I have used VIDA to retrieve codes:

ECM-3502 MISFIRING
ECM-3512 MISFIRE CYLINDER 1
ECM-3522 MISFIRE CYLINDER 2
ECM-3532 MISFIRE CYLINDER 3
ECM-261A LONG-TERM FUEL TRIM, BANK 1 UPPER LIMIT
ECM-262A LONG-TERM FUEL TRIM, BANK 1 UPPER LIMIT

I have replaced the plugs and reset the adaptive values/codes with VIDA only to have them come back immediately.

I plotted values I thought would be of interest and attached the graph. Note the fuel trim increasing rapidly.

My first thought was front O2 sensor fault - however they seem to respond similarly and only affects one bank. As the fault only affects one bank I expect that the issue does not lie anywhere on the intake side. It surely must be fuel control systems.

Anyway, I'll stop speculating and hand this off to the experts around here. Thanks!


EDIT - When replacing the plugs I also moved coils from bank 2 to bank 1. Fault remains on bank 1.
 
Attached Thumbnails 1999 S80 2.9 fouling plugs 1, 2, 3-untitled2.jpg  

Last edited by nhouison; 09-23-2014 at 02:42 AM. Reason: Adding information
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Newport_j
Volvo S40
3
09-15-2014 12:23 AM
mustang
Volvo S80
1
01-11-2012 06:22 PM
7antera
Volvo S80
2
06-02-2008 08:00 AM
pcgold
Volvo S80
3
05-30-2007 10:43 PM
yellow95
Volvo 850
6
04-22-2006 12:42 AM


Thread Tools
Search this Thread
Quick Reply: 1999 S80 2.9 fouling plugs 1, 2, 3


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.