Skip the auto shop - Our mechanics make house calls

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 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

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: Rocker arm would i know about it or car be normall

A broken rocker arm would definitely make a lot of noise and cause a constant misfire in the cylinder it is related to. My best advice would be to hire an experienced technician to look over the work to see...

Q: Brake lights on trunk not working

For some reason, when consulting the wiring diagram, I don't see a trunk mounted brake light listed. I only see the high mount (one in the rear window) listed. Regardless, if the trunk bulb is not working with a new...

Q: I have a2007 Mazda cx7 and the serpentine belt broke causing power steering to go out this is the second time this has happened in

The coolant that got on the belt and pulleys caused the belt to come off. You should have all the pulleys cleaned off of coolant and replace the belt. Check all the pulleys and tensioner for any problems before installing...

Related articles

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...
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.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.