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Maybe you guys can help.. Misfiring 06 s40 t5

Help, Advice, Owners' Discussion and DIY Tutorials devoted to the second generation C70, S40 and V50 Volvos -- awkwardly model year 2004 ½ onwards -- plus where to go for advice and discussion on Volvo's sporty C30 Coupe powered by Volvo's ubiquitous inline 5-cylinder power plant.
Ou2mame
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Joined: Wed Apr 08, 2015 10:42 am
Year and Model: 2004 xc90
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Ou2mame

Maybe you guys can help.. Misfiring 06 s40 t5

Post by Ou2mame » Mon Jan 04, 2016 5:23 pm

Alright... I have a thread over on swedespeed

http://forums.swedespeed.com/showthread.php?t=261473

We have an s40 t5 awd with 35k on it... And it's having a misfiring problem. 2 and 4 misfire on startup, sometimes. It also sometimes cranks but won't start but always starts on the 2nd try. It runs great otherwise.

I've replaced with oem parts...
Plugs (0.7 gap)
Coils
Fps
Cps
Drop tested the battery and had it checked at 3 different places, and its from 2013
Checked the fuel pressure, it's 60 at crank and 43 at idle. Freeze frames show the same and no other irregularities

I figured maybe somebody here might have some ideas.

atfritz
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Year and Model: 2005 V50 T5 AWD
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atfritz

Re: Maybe you guys can help.. Misfiring 06 s40 t5

Post by atfritz » Sun Jan 10, 2016 8:11 pm

I read in another forum that this could be possibly due to a bad camshaft sensor. In your case I wonder if it could be a fuel problem which is why it might take a few tries to get it started...

Ou2mame
Posts: 142
Joined: Wed Apr 08, 2015 10:42 am
Year and Model: 2004 xc90
Location: Long island, ny
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United States of America
Ou2mame

Re: Maybe you guys can help.. Misfiring 06 s40 t5

Post by Ou2mame » Tue Jan 12, 2016 3:08 pm

It ended up being messed up valves, the head is in a machine shop right now. Didn't see that one coming.

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