It is never pleasing to notice a sound you don’t know about, and which results from your car. Thus, what if you detect an exhaust noise that persists on your Volvo S90? It is highly possible that this is a minimal problem, however, before being sure, it is better to execute some inspections. Our team has written this to support you solve it. First, we will look at the possible reasons if you have a muffled exhaust sound on your Volvo S90 and second, if you have a metallic rattling noise on your Volvo S90.exhaust-noise-volvo-s90

Muffled exhaust noise Volvo S90

Exhaust pipe with holes Volvo S90

Having a muffled sound from its exhaust is not insignificant and can end in over-consumption, or a malfunction of the car engine, which could after a while become dirty, for example. If you have an exhaust noise on your Volvo S90, it is plausible that it is due to a hole in the exhaust pipe, this is the most common cause. To be able to verify this, situate someone under the running motor car and accelerate to help them locate the source of the hole. Once identified, if it is not too large you can cold seal it with specific metallic mastic type legs. Otherwise, the section will have to be changed.

Element dislocated exhaust pipe Volvo S90

The other possibility of being the subject of a muffled exhaust noise on Volvo S90 is to have a part of the exhaust device that has dislocated because of vibrations for example. Indeed some junctions of the different parts of the pot can loosen along with time and induce an exhaust gas leak in places not intended for this goal. These fumes will then generate a loud noise. Same technique as above, we go under the Volvo S90 to identify the problem area, and tighten or change the bolts. If you hear a muffled sound but after verifying it doesn’t seem to come from the pot itself, think about having a look at this document which gives solutions gives solutions about rear end noises on Volvo S90.

Metal rattling exhaust sound Volvo S90

Damaged exhaust muffler noise Volvo S90

If, on the other hand, you are subject to an exhaust sound that is more of a metallic sort of, it is plausible that one or more parts of your exhaust may be injured. Indeed, it is plausible that either your baffles, the catalyst or the silencer are the cause of this noise. To be sure, go under your Volvo S90, cold, and tap each of the previously stated parts with a hammer to identify the source of the noise. You should move things between things in the problematic part, if they are baffles, you can try to push the section a little bit to try to block them and thus limit their movements. If it is a out of date catalyst, it will be necessary to consider replacing it, as well as the silencer. In this case, to stop the exhaust noise on your Volvo S90, you will either have to find a used one and do it yourself, or go to your auto mechanic.

Metal rattling exhaust noise Volvo S90 : Silentblock, loose pot

Finally, a metallic exhaust noise on your Volvo S90 may be linked to a poor attachment of your exhaust to your car. Indeed, over the years, vibrations, the pot fasteners on the car chassis can come off. In this case, you need to verify, when cold, that the pot holds well, to try to get it to move in different directions and watch how it reacts. Backwards there should be some play and be able to move but not too much. The closer you get to the engine unit, the more fixed it should be. Visually verify the fasteners for which you have doubts. Finally, it is possible that a silentbloc may have died . In this case it will have to be changed.