I just had my head rebuilt after having 2 exhaust valves burned/broken. We had to remove the VVT on the exhaust cam during the processs. I have not been able to find any accurate write ups to do this process. I have found some that talk about setting the VVT on the intake cam but have not seen any on the exhaust side.

Any help with a write up and pictures would be great.

Thanks

 

I have a 99 v70xc That has the vvt. I also am having timing issues with the vvt after replacing t-belt and cam seals. I got a procedure off of Mattewsvolvosite.com fo a 200 model yr but it was a little different then the 99 model year (vvt on the intake cam on 200 model yr) I took a chance, set it up to where it made the most sence to me and it ran good for about 10 miles. Idle was rough after that and cel on. checked codes and found timing issue code (do not remember the code number) I have not been able to find the correct procedure to set this unnessasarily complicated thing up. I feel for you and am bringing mine to a volvo shop today....good luck.

 

It is a pain to do. You actually need a special tool to be able to do it properly.

 

So I brought my car to a volvo shop that I use to have them set up the vvt. I went to pick it up and same issue about two miles down the road, cel on and rough running. Brought it right back to them and they are going to try again monday! My advice to any one who is thinking of removing the vvt unit from the cam, line up your marks, lock the cams into place on the drivers side of head with cam lock tool witch I made, remove the belt, and THEN before removing the vvt from cam, rotate the cam gear with the vvt back and forth and mark the start and stop of the vvt with a paint pen. The vvt will rotate about 1-3 teeth. This trick I just learned from another volvo shop after I messed up mine..

 

That is how I always do the ones I take apart as well.
I had one that kept throwing the same code. After many times trying to reset the timing found out is was a bad cam position sensor.

The cam sensor has 2 circuits. One just sees movement for the engine. The other the ECU uses it to adjust the VVT for the correct timing.

So after 3 days of messing with the car and resetting the timing 4 times and installing a new VVT pulley it was the cam sensor.

 

I have heard from a few people that the cam position sensor may be the culprit to my issues. Is there any way to test this?


We did not remove the VVT from the camshaft when we removed it to had the head built. Not sure if this means I dont have to reset the VVT to the cam.

 

If you did not remove the VVT from the cam and you locked the cams properly then I would look at the cam sensor.

But I have not found a good way to test it yet.

 

I think you can get the cam cover off without removing the VVt pully...I did an S60 with VVt and managed to do it this way..
You don't need to mark the VVT with paint, when you have the cams locked up, turn the vvt pully all the way clockwise until it stops then put your belt on. Simple!
It doesn't really matter where the pully is on the cam, you can ignore the timing mark if you want to.... as long as you put your own mark on afterwards for future reference.