What could be more frustrating than discovering a persistent noise when driving your car, whether it’s because you want to listen to your favorite radio or chat with your passengers, discovering an air noise on BMW 3 Series is always irritating. It is with this in mind that we decided to produce this article. Indeed, our team wanted to give you the keys to fix this persistent problem that can become frustrating in the long term. First we will take a look at the air noise on BMW 3 Series based on the cabin, then at the air noise that manifests itself during acceleration, and finally at the air noise on BMW 3 Series that is coming from doors.
I hear an air noise in the cabin
if you find out of an air noise on your BMW 3 Series and it is situated in your cabin, it may be related to a fan that has shifted or is starting to dry . In any case, you will need to check out the fan in question to visually verify its condition. The easiest technique is to open the ventilation circuit, and rotate the circuit while you are watching its proper performance, you can try to grease it to limit this noise, but it is very likely that the final solution is to change it.
If you haven’t found the answers to your questions in this section but your air noise on BMW 3 Series comes from your cabin, read both articles, firstly cabin noises on BMW 3 Series and heater fan noises on BMW 3 Series can surely help you find the reason.
I hear an air noise when I accelerate with my BMW 3 Series
Air noise BMW 3 Series caused by an air intake hose
The first of the two alternatives that can generate an air noise on BMW 3 Series when accelerating and the less severe. Is that you have one of your air intake hoses that has been punctured or cracked. This failure will lead to a large and unexpected air intake . This will manifest itself in a loud air noise at acceleration when the air intake is running at full throttle. So verify the condition of all your hoses, don’t hesitate to ask someone to accelerate while you check out the engine block to help you discern the area of origin of air noise on BMW 3 Series.
Air noise BMW 3 Series caused by your turbo
One of the other possible origins of your air noise on BMW 3 Series is your turbo. Indeed, a broken turbo will emit a sound close to an air or breath noise when it is switched on. It will be used during your acceleration phases. You may also experience a power loss that would point out the failure of your turbo. It is also plausible that a lack of lubrication is the reason of this noise. Have it inspected, and change it if necessary, if you don’t want to get your engine dirty. If your air noise on BMW 3 Series manifests itself well when you accelerate at any speed, but you want more details about it or you still haven’t found the reason, browse both articles about turbo noises on BMW 3 Series and noise when accelerating on BMW 3 Series for more details.
I hear an air noise on BMW 3 Series at the doors
Air noise BMW 3 Series caused by plastic door covers
If you encounter air noise on the doors of your BMW 3 Series, it is possible that it is caused by some plastic covers on the interior side panels of your door. These can come loose, hole, fall and thus create an air intake that will obviously make a distinctive and unpleasant air noise in the cabin. To validate that you don’t have this problem on your BMW 3 Series, open your doors and check the sides of them carefully, see if all the covers are properly positioned.
Air noise BMW 3 Series caused by door seals
Air noise at the doors of your BMW 3 Series can also be linked to a gasketfailing or overused. Indeed, the door seal, in addition to have a preventive function against moisture infiltration, also has a protective function for air inlets in the passenger compartment. When it is worn, it will not settle and therefore no longer give a perfect seal between the door and the car body. To verify its condition, there are two solutions, first, visually verify the state of the seal and for the second test, install someone inside the passenger compartment and door by door, car closed, sprayed with water the seals to see if water goes in. If you are in this case, go to your technician to have your seal swapped and the air noises on your BMW 3 Series wiped out. If your air noise on BMW 3 Series is not resolved despite reading this part, that it is present at your doors, we suggest you to read this full guide on door noises on BMW 3 Series which should allow you to find the solution to your problem.