Generally, A roaring noise during belt rotation (without the A/C on) will often be caused by an idler pulley bearing going bad. There are occasions where Alternator bearings will also create a roaring noise during belt rotation. In-order to diagnose either of these problems simply remove the belt and rotate each of the pulleys by hand. The pulley failure will make itself apparent by noting that the noise begins when rotating the faulty pulley. These pulley failures are very common on the 900, 93 & 95 cars. Keep a close eye on those pulleys because they will cause major engine damage if the car is driven after the belt comes off. The engine will begin to overheat instantly.
|Belt removal should be done by authorized individuals only! Physical Injury can occur!|
Thanks to Pavel Volkov for contributing to this FAQ!
Saab 95 V6 info Belt removal is actually pretty easy, taking into consideration on how much experience you have. The first thing is making it easy by giving yourself a lot of room. The engine bracket and mount need to be removed (warning make sure you are aware that the engine will drop slightly) but i suggest you work on the mount first before removing the bracket from the engine. After the mount is removed remove the bracket from the engine. The bracket is two pieces, one that connects to the mount, and the other to the engine block. the smaller one has 3 bolts, and the one that attaches to the block has four, 3 on the top side, and one from the bottom. Once you have both removed, it will be easier to work with the tension pulley, and removal of the belt. The tension pulley is tricky and i suggest you have plenty of strength for this as you will be tired quickly. Pulling the tension pulley with a socket wrench is the best way(don't remember what size) but be careful not to let it snap back...ease it back slowly. The tension pulley is activated by pulling towards you, or like tightening a bolt. when you have the pulley all the way pulled down, the belt is loosened and you can carefully slip it off the pulley system. Good luck, and be careful with everything. Since the engine block is lowered slightly, and I am not saying this is the best method, and if your car is raised on jack stands already, use a jack (or a second jack if one is already used) with a piece of wood the size of the oil pan or bigger to spread the weight of the car, raise up the engine a little, at the oil pan to help the mount back into position. DO NOT USE A JACK ALONE ON THE OIL PAN, YOU WILL PUNCTURE A HOLE IN IT. YOU MUST USE SOMETHING AS WIDE AS THE OIL PAN BETWEEN THE JACK AND THE OIL PAN.