It is rarely pleasant to discover a sound you don’t know about, and which originates from your car. Thus, what if you discover an exhaust noise that is persistant on your volvo v40? It is highly possible that this is a minimal trouble, however, before being sure, it is better to operate some checks. Our team has made this to help you solve it. First, we will look at the possible causes if you have a muffled exhaust sound on your volvo v40 and second, if you have a metallic rattling noise on your volvo v40.
Muffled exhaust noise volvo v40
Exhaust pipe with holes volvo v40
Having a muffled sound from its exhaust is not insignificant and can end up in over-consumption, or a malfunction of the car engine, which could finally become dirty, for example. If you have an exhaust noise on your volvo v40, it is plausible that it is due to a crack in the exhaust pipe, this is the most regular explanation. To be able to verify this, position somebody under the running motor car and accelerate to help them locate the starting point 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 swapped.
Element dislocated exhaust pipe volvo v40
The other possibility of being subjected to a muffled exhaust noise on volvo v40 is to have a part of the exhaust unit that has dislocated caused by vibrations for example. Indeed some junctions of the different parts of the pot can loosen over time and generate an exhaust gas leak in places not intended for this purpose. These fumes will then produce a loud noise. Same technique as above, we go under the volvo v40 to determine the trouble area, and tighten or replace the bolts. If you hear a muffled sound but after checking it doesn’t seem to come from the pot itself, think about taking a look at this document which gives solutions gives solutions about rear end noises on volvo v40.
Metal rattling exhaust sound volvo v40
Damaged exhaust muffler noise volvo v40
If, on the other hand, you are subject to an exhaust sound that is more of a metallic type, it is plausible 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 reason of this noise. To confirm, go under your volvo v40, 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 replacing it, as well as the silencer. In this case, to stop the exhaust noise on your volvo v40, you will either have to find a resale one and do it yourself, or go to your auto mechanic.
Metal rattling exhaust noise volvo v40 : Silentblock, loose pot
Finally, a metallic exhaust noise on your volvo v40 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 check, 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, the more fixed it should be. Visually check 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.
