It is rarely pleasing to find out a sound you don’t know about, and which originates from your car. So, what if you notice an exhaust noise that is persistant on your Toyota Sienna? It is highly probable that this is a minor trouble, however, before being sure, it is better to execute some investigations. Our team has written this to support you resolve it. First, we will look at the possible causes if you have a muffled exhaust sound on your Toyota Sienna and second, if you have a metallic rattling noise on your Toyota Sienna.
Muffled exhaust noise Toyota Sienna
Exhaust pipe with holes Toyota Sienna
Having a muffled sound from its exhaust is not insignificant and can end up in over-consumption, or a malfunction of the engine unit, which could in the end become dirty, for example. If you have an exhaust noise on your Toyota Sienna, it is plausible that it is due to a hole in the exhaust pipe, this is the most common cause. In order to validate this, position someone under the running motor car and accelerate to help them recognize the origin of the hole. Once located, if it is not too large you can cold seal it with specific metallic mastic type legs. Otherwise, the section will have to be swapped.
Element dislocated exhaust pipe Toyota Sienna
The other possibility of being the subject of a muffled exhaust noise on Toyota Sienna is to have a part of the exhaust unit that has dislocated resulting from vibrations for example. Indeed some junctions of the different parts of the pot can loosen after some time and induce an exhaust gas leak in places not intended for this goal. These fumes will then create a loud noise. Same technique as above, we go under the Toyota Sienna to determine the trouble location, and tighten or swap the bolts. If you hear a muffled sound but after verifying it doesn’t seem to come from the pot itself, think about looking at this content which gives solutions gives solutions about rear end noises on Toyota Sienna.
Metal rattling exhaust sound Toyota Sienna
Damaged exhaust muffler noise Toyota Sienna
If, alternatively, you are subject to an exhaust sound that is more of a metallic type of, it is plausible that one or more parts of your exhaust may be damaged. Indeed, it is conceivable that either your baffles, the catalyst or the silencer are the induce of this noise. To confirm, go under your Toyota Sienna, cold, and tap each of the previously stated parts with a hammer to determine 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 swapping it, as well as the silencer. In this case, to stop the exhaust noise on your Toyota Sienna, you will either have to find a used one and do it yourself, or go to your auto technician.
Metal rattling exhaust noise Toyota Sienna : Silentblock, loose pot
Finally, a metallic exhaust noise on your Toyota Sienna may be related to a poor attachment of your exhaust to your car. Indeed, as time passes, 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 responds. 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 swapped.
