Q: Rattling coming from the bottom of the car during idling

asked by on

My car makes noise during idling only. It has gone close to 100,000 miles. The noise is coming from the outside of the car, from its bottom part. It is a rattling noise similar to the sound made by tin cans. This happens frequently, especially on the first car startup of the day. It gradually becomes less loud after some time. There is another helicopter-like, deep rattling sound that is noticeable occasionally. What could be causing these noises? Thank you in advance.

The rattle at idle could be caused by a variety of issues, such as any loose parts or panels, fuel injector noise, or the engine top end. The deeper rattle could also be caused by a few items such as a drive shaft, wheel bearing, or the engine itself. This could potentially be a serious safety hazard, so it would be best to not drive the vehicle until it is inspected. To prevent this from getting any worse, a qualified technician, such as one from YourMechanic, will have little trouble diagnosing your rattling noise and performing any repairs required.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Rattling coming from the bottom of the car during idling

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: I think dirty MAF

This may be a sign of a failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected into the...

Q: high idle after cleaning throttle body

Not knowing the vehicle's year, make, or model makes this more difficult to diagnose. You probably need an idle learn reset procedure with a professional scan tool. For some models, such as Nissan, a learn reset will be...

Q: my speedometer and gas needle does not work on my 2003 mitsubishi outlander LS

Hello, thank you for writing in. The speedometer and the fuel gauge run independently of each other up until they connect to the instrument cluster at the back of your dashboard. If the other gauges were failing as well, you...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...