I just picked up a xc90 with the twin turbo 2.9L. cold engine start up is fine, no noise no warning. After engine warms up the no oil pressure warning comes on. If i continue to drive it eventually I get a slight knocking/ticking noise so I shut of engine. I allow it to cool. Start it again with no noise and no warning
This only happens when engine is warm. I assume my pump is bad or the o rings need replacing. I am also getting check engine for camshaft A & B advanced too far. Please help. Should I drop the pan and replace the pump? Why am I getting the cam position codes as well?

 

Probably have crap in the pan clogging the screen. I'd drop the pan, clean it out and replace the pan o-rings and pickup tube o-ring.

The cam codes are because there is no oil pressure for the CVVT

 

That's what I figured....I assume there is no damage to the engine since when it is cool it idles fine with no noise? and should I replaced the oil pump? Or just the o rings and seals?

 

Any time you run an engine with low oil pressure, damage is a possibility.

The pump is probably fine. I don't think I've ever seen one fail.

 

Well yes of course it's possible....but what I am saying is the fact that the engine will start (cold) and idle smooth with no noise, ticks or knocks, as well as no smoke from the exhaust at all is probably a good sign that the engine is not seriously damaged.

Could u provide me a link for the o-rings & seals I would need to complete this repair? I think I know what I need to get but would like to be sure.

 

I do not have a link to the parts.

 

https://www.fcpeuro.com/products/volvo-engine-oil-sump-o-ring-kit-victor-30750783?gclid=CjwKEAjwu72pBRC9hsn2-e34vRUSJACnSYsTIspOoujMcKGuDZzzUyLuzo59AiisDXU6ZY7 o-gEkPhoCUT3w_wcB

I bought this kit plus the 2 oil cooler seals and the pink anaerobic gasket sealant. Getting ready to drop the pan today.