IPD sale XeMODeX - Experts in Volvo Electronics
Photo upload attachments are fixed. I broke them inadvertently last night.

Get email notification of topic replies. Log in or register (free). Amazon Link Buy anything with this and it helps MVS!

S60 2.5T misfire

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
2003 - 2007 S60 R

Hawgdalton
Posts: 9
Joined: Tue Jul 09, 2019 12:11 pm
Year and Model: 2008 s60
Location: Walterboro, SC
Has thanked: 6 times

S60 2.5T misfire

Post by Hawgdalton »

I have an 08 S60 2.5T that started to idle rough suddenly after a road trip. Took it autozone to get codes read and it showed misfire in multiple cylinders. Their recommended fix was to replace plugs and coils. Has anyone else had this problem and was this a correct solution? How can you tell if this is not the timing belt? Thanks in advance.
User avatar
oragex
Posts: 5015
Joined: Fri May 24, 2013 6:20 am
Year and Model: S60 2003
Location: Canada
Has thanked: 99 times
Been thanked: 297 times
Contact:

Re: S60 2.5T misfire

Post by oragex »

You can find and replace only the faulty coil
Use only Bosch, maybe order 2 to have a spare one. Be sure not to drive with the misfire or at least undo the injector on that cylinder
It is indeed important to inspect the plugs, because worn ones will cause the coils to fail.

https://www.fcpeuro.com/products/volvo- ... 16#fitment
https://www.fcpeuro.com/products/volvo- ... 71#fitment
.
Hawgdalton
Posts: 9
Joined: Tue Jul 09, 2019 12:11 pm
Year and Model: 2008 s60
Location: Walterboro, SC
Has thanked: 6 times

Re: S60 2.5T misfire

Post by Hawgdalton »

Thanks for the reply. We have not driven the car since the diagnosis. I have already ordered the parts you recommended from FCPeuro. They sell them as a complete kit for all five plugs and coils. Should be here Wednesday so I plan on replacing them all Thursday. I will update on the outcome. Is there any way to tell if this is the problem or if it's caused by the timing belt?
MDK
Posts: 448
Joined: Sun Apr 08, 2018 5:43 pm
Year and Model: 1998 xc 70
Location: Ohio
Been thanked: 28 times

Re: S60 2.5T misfire

Post by MDK »

What's the odometer read?
Hawgdalton
Posts: 9
Joined: Tue Jul 09, 2019 12:11 pm
Year and Model: 2008 s60
Location: Walterboro, SC
Has thanked: 6 times

Re: S60 2.5T misfire

Post by Hawgdalton »

145000 roughly?
User avatar
oragex
Posts: 5015
Joined: Fri May 24, 2013 6:20 am
Year and Model: S60 2003
Location: Canada
Has thanked: 99 times
Been thanked: 297 times
Contact:

Re: S60 2.5T misfire

Post by oragex »

What you can do at this point is to try unplugging each injector (it's better than unplugging the coils) and see if there's a cylinder that has no 'reaction'. It would mean that cylinder has a misfire, so then you know that was the problem.

Such misfire is usually caused by a coil. For the belt, if it breaks, the engine will shut off and won't restart.

As for the belt, it's rather easy to have a look at it without any tools, however at 145K miles if it's the original one it's long overdue. See if it has large cracks on it, if it looks smooth I would guess it was already replaced. www.youtube.com/watch?v=gS3bawaBMMk
Hawgdalton
Posts: 9
Joined: Tue Jul 09, 2019 12:11 pm
Year and Model: 2008 s60
Location: Walterboro, SC
Has thanked: 6 times

Re: S60 2.5T misfire

Post by Hawgdalton »

Great thanks. I'll follow up with you once I work on it Thursday.
cn90
Posts: 6830
Joined: Wed Mar 31, 2010 9:54 am
Year and Model: 2004 V70 2.5T
Location: Omaha NE
Been thanked: 153 times

Re: S60 2.5T misfire

Post by cn90 »

I do not know why people jump to ign coils so quick.

Start with simple stuff such as spark plugs first. At 145K, they are likely worn causing misfire. Replace the spark plugs and go from there.

For ign coils, I get a few used from local junk yards for $5-$10/each.
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+
cn90
Posts: 6830
Joined: Wed Mar 31, 2010 9:54 am
Year and Model: 2004 V70 2.5T
Location: Omaha NE
Been thanked: 153 times

Re: S60 2.5T misfire

Post by cn90 »

As above, time to worry about timing belt, water pump, serp belt etc. I wrote the DIYs in forum.
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+
Hawgdalton
Posts: 9
Joined: Tue Jul 09, 2019 12:11 pm
Year and Model: 2008 s60
Location: Walterboro, SC
Has thanked: 6 times

Re: S60 2.5T misfire

Post by Hawgdalton »

Thanks did not think about junk yards.
Post Reply
  • Similar Topics
    Replies
    Views
    Last post