Skip the auto shop - Our mechanics make house calls

Q: Engine noise when accelerating

asked by on

When accelerating at a normal rate or extremely fast (not typically when slow) when my engine reaches around 3k-3.5k rpm. There will be a weird grinding sound for about another 4-5 hundred rpm and then the engine will run fine. There are no performance changes when this happens. Only the sound

My car has 157000 miles.
My car has an automatic transmission.

Hi there. The concern you have for the engine noise may not be coming from the engine. The accessory components (water pump, power steering pump, a/c compressor, belt tensioner pulley, idler pulley) could be where the grinding noise is coming from. Since there appears to be no performance change is a good thing! It’s difficult to say where the noise could be coming from, without hearing the noise. If you can duplicate the noise, by bringing the rpm up (briefly) without driving it, that would help isolate the noise. You could remove the accessory drive belt(s) and identify if, noise is still there. The grinding noise your vehicle experiences upon acceleration needs to be fixed soon. I recommend having an inspection performed by a certified technician from YourMechanic.

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. Engine noise when accelerating

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: Broken spark plug in head

Having a broken spark plug in the cylinder head is never a good thing. If the threaded part of the plug is in the head then it needs to be extracted in one of two ways. There are special extraction...

Q: I want to replace the upper and lower hoses and thermostat

Hello. If the coolant is leaking then that needs to be found and repaired first. If it is from under the reservoir, then it may be the reservoir or it may be one of the hoses. Most of the time...

Q: Steering trouble

The steering shaking above 70 is wheel balance. The noise of grinding when turning may be the steering rack and pinion or the struts; I would have to hear the noise. If you are having issues with the steering going...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...