Skip the auto shop - Our mechanics make house calls

Q: My 206 c230 v6 engines makes some unusual notice especially when I accelerate faster

asked by on

I hear a rattling sound when I try accelerating faster or when am climbing a hill...normally I don't hear the sound untill the engine is warmed up or about 10mins driving

My car has 95000 miles.
My car has an automatic transmission.

The rattling noise may be due to the mass air flow sensor causing the engine to run leaner than it should be. This would cause the engine ping noise. You should have the engine scanned to check the mass airflow sensor with the key on, engine off, during idle and at specified RPMs to see if it reads correct. If it’s out of specification, replace the sensor and clear the codes. You’ll need to have the fuel control reset in order to relearn the new mass airflow sensor. If you need some help with these checks, feel free to contact a certified technician, like one from YourMechanic. They’ll be able to diagnose the engine’s rattling noise firsthand and help you fix it accordingly.

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!
  • Home
  • Questions
  • My 206 c230 v6 engines makes some unusual notice especially when I accelerate faster

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: Light problem.

Hi there: Most of the time, this issue is caused by a faulty electrical relay connected near the rear of the brake light, or a fuse that supplies power to the rear brake light (usually one fuse for each side...

Q: My car is not turning over when i crank it up i bought new spark plugs and changed the oil filter

It is never a pleasant situation to have your car not turn over when you need it most. While keeping up with oil changes and spark plug maintenance is important, unfortunately, it looks like there is more going on here...

Q: Gears freezing up stiff on 2005 Audi A3 Quattro

Hello. Most of the time this is caused by a failing clutch or the hydraulic system that may be failing. I usually start by checking the transmission fluid first. If the fluid is old or burnt and broken down, then...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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...