Hi,

I don’t think I can do that much to help you as I’m a 240 man through and through.
I do try to keep up on things of interest and I have seen some minor articles on the internet about Variable Valve Timing engines.
I only read about how some engines acquire some problems during long term operation.
Unfortunately the volvo engine, that’s probably has German sourced engineering, is not immune to them.


In one YouTube it looked like quite the headache to change out the control valve that shifts the sprocket on the camshaft to vary the timing.
In order to dig into them it requires making sure that the camshafts do not move while the chains are off.
This is where is where I went ugh when I saw the fixture to do that on a FWD sideways engine in the car!
The red blocks engine use a rubber timing belt and the engine sits in there so you can at least look at it.

It might be oil pressure driven as that appears to be a method to accomplish the rotation.
Other earlier designs might have use a mechanical governing but today they are using an electronically controlled apparatus.

I suggest you need to research deeply into what your particular engine has for this to be a DIY project.
I have a ball cap hat that says “ I CAN FIX THINGS” and under that it says in smaller type below “and I know things”
With latter being the most important is to draw from all the sources available of the past and present.

As was said in one of Clint Eastwood’s film “One has to know one’s limitations”
Mine started back in 1978 GT that my first 240 and the accumulation of five more used ones.
I think I have finally found at least one limitation?
😊
I have been able to steer clear of any FWDrives but it doesn’t mean I have ignored them.
That had something to do with a Tom Selleck movie and Sharpshooter Matt “Quigley Down Under”

Hopefully your 2006 hasn’t progressed that far in technology that it’s something more simpler.
I surely hope there are some forums that can help guide you to a solution.


Phil