Skip the auto shop - Our mechanics make house calls

Q: Rattling and bumping noises underneath car & getting worse

asked by on

My car developed a rattling and bumping noise which seems to be coming from underneath the front or the middle of the car. Four different times, the dealership has tried to fix this problem, but they can’t seem to do so. The sound is the same - no change. One time they kept my car for over a month. The only thing I was told was that Acura was aware of the problem. The dealer thinks it’s the engine mount, but there just doesn’t seem to be any fix any time soon. I searched on the internet and found reviews by many others with my make/model who have the very same problem as my car. The sound in my car is continually growing worse and I’m very concerned about my and my family’s safety in this car, especially on the interstate. I thought I might use the ‘Lemon Law’ but Acura said they would fix it… but when!! It doesn’t look like they will. Can you tell me what to do and how I can get my car permanently fixed?

Hello. Unfortunately, if this is not a mechanical repair to the powertrain it would not be considered under the Lemon Law. Most of the time this noise comes from the exhaust. In a lot of cases, unbolting the exhaust and allowing it to hand and loosen up, and then tightening it back up will help. A worn engine mount will also intensify this noise if the exhaust is making noise. I usually check the mounts and the exhaust first prior to checking the suspension, as it can also be a failing strut. If you are wanting to have this repaired, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the rattling noise and determine what should be done next.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car owner is told squeaky brakes are normal

Hi there. Many times they say that these things are normal because they do not have a good fix for them. The brake noise problem occurs because the brakes get too hot on this vehicle and they glaze over. ...

Q: Engine quit working

The engine quit for a reason and I believe, from what you have stated, that a failed fuel pump caused the car to quit, unless there were other like overheating or engine noise before the stall. The engine in these...

Q: Smelling fuel inside car and smoke coming from the engine.

Hello. If you just had all of these services done, then you should take the vehicle back to that shop. It sounds like they may not have properly reconnected everything in the fuel system when they serviced the injectors. It...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...