Hello all,
We just bought an '04 S80 with 170k on the ODO for my son who is off to college in the fall, I want to do the Timing belt (and water pump, tensioner, idler etc) before he leaves but I can't find a manual that covers that engine, Haynes and Chilton's have S80 manuals for his model year, but none of them cover the 2.9l 6. Does anybody know of a good manual that covers his motor? Not sure why they both skip that motor, but I'd sure like to have the steps required to swap out the belt and water pump explained in detail before we begin. Thanks for any suggestions you may offer!

 

the 2.9I timing belt has a service interval of 10 years or 105K miles (whichever comes first) so you are either 40K miles early or 60K miles late :-)

There are vids and write ups on the web but the procedure is pretty much the same for the I5s and I6s. The trick is to access the front of the engine from the passenger side wheel well - there's a trap door you can fold back and clamp out of the way with vise grips. The main complexity is the cam shaft timing due to the VVT gear. You can either use a cam lock tool (that grabs the cams not the gear) or read up on the procedure for rotating the gear during install. Water pump shouldnt be a problem once the timing belt is off. You may also want to inspect/replace any of the serpentine belt idlers/tensioners as well. Not sure if the VVT differs between the T6 and the NA engine...

 

Thanks for your reply! I did find a video that was helpful, even though I think the fellow who produced it made things harder by not removing some parts that were in his way, the thermostat housing and the ECM tray perhaps? I'm very curious now about the Variable Valve Timing, how can I figure out if our 2004 2.9l is a VVT engine or not? I have looked around and haven't gotten a satisfactory answer. If anybody has any tips I'd appreciate your input! Thanks.

 

You should have VVT on the intake side. You will need the cam locking tool and maybe some other things as well. It's not a easy job, very limited access. The Haynes manual is OK but not great.

With the cam locking tool installed the intake cam gear should have it's timing make line up, with the gear rotated to the stop in the clockwise direction. The thermostat housing isn't really in the way, if you remove the top cover of the ECM box, then remove the ECM that is closer to the engine, that will help, there is a special tool required to remove either ECM.

Where are you located, I have some volvo tools and a volvo code reader, that I want to sell.

 

I'm in south Texas, Corpus Christi area. Do you know if the Haynes or Chilton's manuals that don't cover the I6 are still somewhat useful due to the similarities with the I5, are the motors very similar except for one extra lung?

 

personally, I only use the Haynes for looking up torque specs and general procedure notes. Googling does a better job as you can find stuff on Youtube, related posts on this board, posts on several other Volvo forums, blog posts on vendor sites etc.