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2006 XC90 2.5T - couple things...

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo XC90s. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America).
bfry
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bfry

2006 XC90 2.5T - couple things...

Post by bfry » Fri Oct 18, 2019 7:39 am

Mileage ~170k

Started car other morning - running very rough - CEL = P0300, P0304& P0305.

Started checking coils - 1&2 sparking fine - then and I don't know why I didn't finish checking the other coils, decided to do a compression test.

1-3 = 150
4 = 135
5 = 120

Go back out today to finish checking coils 3-5 and not getting a spark. Checked 1&2, which were good yesterday, but no spark this morning. What am I missing? Did I blow all the coils when doing the compression test because I didn't disconnect them?

Silly question, but plugs (all very corroded btw, picking up new ones right now) don't need to be in cylinder when doing a spark test right - not some kind of fail safe where computer detects no plugs so doesn't bother sending electricity to coils?

Thank you.



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oragex
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oragex

Re: 2006 XC90 2.5T - couple things...

Post by oragex » Fri Oct 18, 2019 11:08 am

To check any coil - try disconnecting the injector rather than the coil itself www.youtube.com/watch?v=nDwtZCWU7u8

I think they are made by Bosch

You'll need to replace the spark plugs - when worn they cause the coils to fail
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ggleavitt
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ggleavitt

Re: 2006 XC90 2.5T - couple things...

Post by ggleavitt » Fri Oct 18, 2019 1:33 pm

For coil pack, Bosch PN 0221604008 is the OEM version of the Volvo PN 30713416 at about 60% of the price.
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bfry


2005 2.5T AWD-198k
2008 V8 AWD Sport-127k

bfry
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bfry

Re: 2006 XC90 2.5T - couple things...

Post by bfry » Fri Oct 18, 2019 3:08 pm

Thanks for the reply’s above - so I picked up new plugs and new coil packs.

Turns over, sounds like it’s gonna start but no go.

Checked fuse to fuel pump - it’s fine.

Any thoughts?



wanderdüne
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wanderdüne

Re: 2006 XC90 2.5T - couple things...

Post by wanderdüne » Fri Oct 18, 2019 5:41 pm

Check to see if you are getting fuel pressure at the rail. Use a rag to catch spray/excess fuel and depress the shrader valve on the fuel rail.
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bfry



bfry
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bfry

Re: 2006 XC90 2.5T - couple things...

Post by bfry » Fri Oct 18, 2019 10:03 pm

fuse 10 was blown - replaced and gtg - somehow musta blown when doing the compression test yesterday and would explain why no spark today. Running smooth now...

Thank you for the responses.



bfry
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bfry

Re: 2006 XC90 2.5T - couple things...

Post by bfry » Fri Oct 18, 2019 10:08 pm

Fuse 10 in engine bay to be precise = ignition coils, ecm



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oragex
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Re: 2006 XC90 2.5T - couple things...

Post by oragex » Sat Oct 19, 2019 8:58 am

Good fix! May look at the wires to the coils, sometimes the insulation may crack and touch the metal, or may get crushed under the black cover. Also good to look at the engine ground wire, I believe somewhere behind the top of the engine, close to the timing belt side
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