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

S80 issue can't seem to find source of misfire

  #1  
Old 06-06-2019, 04:24 AM
Junior Member
Thread Starter
Join Date: Jun 2019
Posts: 2
Default S80 issue can't seem to find source of misfire

I have a s80 2002 , drives smooth , but misfires , I went over a pot hole it was at night , then 300ft roughly down road engine light flash then stops then starts again. Carefully drove way home . So I got new spark plugs . Old ones were bad figured that would help . It didn't . Cylinder 2 misfires but piston is moving , coil is sparking , I believe it's something to do with vacuum pump. Cause the fuse is blown for it . I checked the lines they all appeared to be fine , the hotter it gets outside it appears to fire up a little bit longer then normal then goes back to misfiring.
 
  #2  
Old 06-06-2019, 10:14 AM
Moderator
Join Date: Mar 2012
Location: Ridgefield, CT
Posts: 4,774
Default

did you try swapping coil packs between #2 and another cylinder? Coils can fail but still produce a colder spark. ALso check the connectors to the coils to look for cracks in the wires going to the coils. When I replaced the coils on my 00 S40 I also did the wire harness and good as new.
 
  #3  
Old 06-06-2019, 10:09 PM
Junior Member
Thread Starter
Join Date: Jun 2019
Posts: 2
Default

Yea I did that , didn't make a difference even swapped spark plugs to see if I had a bad one.
I will have to check connectors to see if cracked .

It's sparking , just not sure why it's not firing up
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
thegazelle
Volvo XC90
11
07-08-2014 09:44 PM
njcardsfan
Volvo S60 & V60
7
09-05-2013 09:36 PM
crazypenguins
Volvo 850
4
07-10-2012 12:52 PM
gridlockfilms
Volvo S40
4
03-29-2009 10:35 PM
95 Volvo 850
Volvo 850
6
08-15-2008 10:42 PM


Thread Tools
Search this Thread
Quick Reply: S80 issue can't seem to find source of misfire


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.