Q: Loud, grinding noise notice when I start my car.

asked by on

My serpentine belt and pulleys were replaced. That didn't solve the problem. I have a loud churning light knocking noise coming from under my hood.

My car has 124000 miles.
My car has an automatic transmission.

Hi there. Remove the serpentine belt and start the engine. If the noise is still present then its not the engine accessories. Then the noise could be a lifter tap that is either a lifter that is stuck or clogged from getting oil into it. If you are having an issue with the lifter tapping, then drain out some engine oil and add 1 quart of ATF Type F to the engine and run the engine at 3,000 rpm for 15 minutes. Then drain out the engine oil and change the filter. Fill up the engine with your engine oil that is normally used and start the engine up. See if the tapping noise has disappeared. If the noise is still there, then a lifter may need to be replaced. If you plan on replacing the lifter, I recommend replacing all of the lifters. If you need further assistance with a loud tapping noise when the engine is started, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Loud, grinding noise notice when I start my 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: I have a 2011 Ford Fusion that has a tap/knock while idling. Normal for this motor?

Hi there. Typically this is normal for this engine. The design of the valve train causes this engine to make more noise than a lot of engines, but it does not create any issues. The fuel injectors tend to also...

Q: 2009 2.7 charger leaking cooling replaced lower radiator hose thermastat and housing still leaking under thermastat

It sounds like you may have a bad gasket that may not have sealed correctly at the thermostat housing or potentially a small crack in the housing itself. I would suggest having a professional from Yourmechanic come to your location...

Q: I have a 2007 Hyundai Santa Fe and when I get in it to start it it want start but the lights and radio come on but if I set maybe

Claimed by Jeff Engstrom

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...
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 Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.