It is never pleasant to listen to a sound you don’t know about, and which results from your car. Thus, what if you find an exhaust noise that continues on your Renault Grand Scenic 4? It is highly possible that this is a small issue, however, before being sure, it is better to conduct some checks. Our team has created this to support you resolve it. First, we will look at the possible reasons if you have a muffled exhaust sound on your Renault Grand Scenic 4 and second, if you have a metallic rattling noise on your Renault Grand Scenic 4.
Muffled exhaust noise Renault Grand Scenic 4
Exhaust pipe with holes Renault Grand Scenic 4
Having a muffled sound from its exhaust is not insignificant and can end in over-consumption, or a malfunction of the engine unit, which could finally become dirty, for example. If you have an exhaust noise on your Renault Grand Scenic 4, it is possible that it is due to a crack in the exhaust pipe, this is the most usual cause. In order to confirm this, situate someone under the running motor vehicle and accelerate to help them discover the source 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 changed.
Element dislocated exhaust pipe Renault Grand Scenic 4
The other possibility of being subjected to a muffled exhaust noise on Renault Grand Scenic 4 is to have a part of the exhaust unit that has dislocated caused by vibrations for example. In fact some junctions of the different parts of the pot can loosen after a while and cause an exhaust gas leak in places not intended for this purpose. These fumes will then generate a loud noise. Same technique as above, we go under the Renault Grand Scenic 4 to identify the issue region, 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 having a look at this article which gives solutions gives solutions about rear end noises on Renault Grand Scenic 4.
Metal rattling exhaust sound Renault Grand Scenic 4
Damaged exhaust muffler noise Renault Grand Scenic 4
If, on the other hand, you are exposed to an exhaust sound that is more of a metallic type, it is possible that one or more parts of your exhaust may be weakened. Indeed, it is possible that either your baffles, the catalyst or the silencer are the cause of this noise. To be sure, go under your Renault Grand Scenic 4, cold, and tap each of the previously stated parts with a hammer to identify the origin 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 Renault Grand Scenic 4, you will either have to find a second hand one and do it yourself, or go to your auto mechanic.
Metal rattling exhaust noise Renault Grand Scenic 4 : Silentblock, loose pot
Finally, a metallic exhaust noise on your Renault Grand Scenic 4 may be related to a poor attachment of your exhaust to your vehicle. In fact, after some time, vibrations, the pot fasteners on the vehicle 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 behaves. Backwards there should be some play and be able to move but not too much. The closer you get to the engine, 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.
