Skip the auto shop - Our mechanics make house calls

Q: Whenever I press on the gas there is a rattling in what sounds like the front half of the car.

asked by on

Whenever I press on the gas there was a rattling coming from or what I think is under the car but I am not 100% sure I just got a muffler put on three days ago and the sound did not exist before then.

My car has 96000 miles.
My car has an automatic transmission.

Loud metallic rattles are not uncommon as vehicles age. That the noise did not start until some exhaust repairs leads to the same spot. An exhaust heat shield. Some exhaust components have a heat shield welded to them. In other instances, the heat shield is bolted to the underside of the vehicle. These heat shields can be two-piece construction, like a clam shell. They are spot-welded is several locations. From age these spot welds can rust and break. The two pieces of the shield will then rattle together. Sometimes constantly and other times, only in certain gears or rpms. It may not necessarily be due to anything other than age and the parts being moved to install new components. Take it back to whoever installed the exhaust system and ask them to take a look underneath.

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!
  1. Home
  2. Questions
  3. Whenever I press on the gas there is a rattling in what sounds like the front half of the car.

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: burning rubber smell and loud squealing noise but only when pushing the gas pedal?

Hi there. Assuming that you're not smoking your tires, this type of noise and smell is often associated with a worn out serpentine or drive belt, as the squealing noise is caused by the belt being loose and the smell...

Q: No start - timing redone slow crank

Hi there: When the engine is slow to crank, it's typically an indication of a battery that has low cranking amps. Although the voltage might be good, the cranking amps is what helps the car to initially start. It's also...

Q: Can the horn/alarm be permanently disengaged or disconnected?

Hi there, thanks for writing in. It seems the problem is that one or more of the door latches is not closing completely when the door is closed, therefore the car will activate the door ajar light switch cause the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...