Turbo Oil Leak and 2 error codes

[red057]

Hello, I have a 2002 S80 T6 with 194,000 miles on it. I have been told by a mechanic that the Turbo is leaking oil and it is going in to the Intercooler. Is this an expensive fix. Also, check engine light is on 2 codes came up "P0014 Camshaft Position Sensor" and "P0128 Coolant temp Thermostat". Anyone have any suggestions or recommendations.

Thanks

[boosted5cyl]

First of all, there's two turbos. Do you know if the mechanic is experienced with later Volvos? A little oil in the intercooler is not necessarily a cause for concern. Any smoke from the exhaust? How is your oil consumption? Has your PCV system been serviced? Pull the dipstick when the motor is warm, any signs of smoke from the dipstick means you possibly have a clogged PCV system which can lead to excess crankcase pressure and also lead to symptoms often misdiagnosed as leaky turbo seals.
So, check the PCV system and service if needed before you get too concerned about the turbos. If you end up needing to have someone rebuild your turbos to replace the seals you are looking $250 per turbo for the rebuilds alone, not including cost to remove and replace them. Good news is that you can DIY rebuild for about $120 in parts if you feel so inclined.

The P0014 can be caused by a few things.
-Tired/incorrect grade oil
-Cruddedup up VVT Solenoid
-Faullty VVT Solenoid
-Faulty VVT Hub
-Incorrect cam timing

If the P0014 is a recent one I would vote to remove the VVT solenoid and degrease\clean it throughally. When I cleaned mine I did a few cycles of soaking the "oil" end in a bag of degreaser (greased lightning), then clean it all out with brake cleaner. If you are close to needing an oil change then this would be a good time to do it. Order a new gasket (or two) before you remove the solenoid as it requires a new one, do not re use the old VVT solenoid gasket!

While you are working on the VVT Solenoid you can check and clean the contacts on connector for your coolant temp sensor. Both the VVT solenoid and coolant temp sensor connector are by cylinder one. Get some contact cleaner, spray the connector for the coolant temp sensor with it and "excercise" the connector by plugging/unplugging it multiple times. If you end up repalcing the VVT solenoid I think they are about $150 and coolant temp is about $120.
Replacing the VVT solenoid and or coolant temp sensors are not a difficult DIY. Removing and or rebuilding the turbos is probably not for the feint of heart. Servicing the PCV yourself can be done for sure and its well documented here, the 5cylinder process is practically the same as the 6. You can get the kit from fcp groton.
Hope this helps


/edit P0128 can be low temp from the sensor too, ie stuck open thermostat. Does the temp gauge on your dash get to the halfway mark after a whle

[red057]

I don't know if mechanic is experienced with Volvo. No smoke from exhaust that I can see, oil consumption is maybe half quart per month. PCV system not serviced recently. What do I have to do to service the PCV system? Concerning code P0128 Coolant temp Thermostat, my radiator was replaced and a few days later I was driving on the highway on a cool night and the temp gauge dropped half way between cold and normal and the air from heater was cold. Temp gauge usually stays midway (normal driving temp)