Skip the auto shop - Our mechanics make house calls

Q: Bad squeaking from under hood, could be pulley.

asked by on

I have a very bad squeaking sound from underneath the hood. Four years ago I had the serpentine belt replaced twice and the tensioner pulley replaced at the same time. I think it might be coming from another pulley.

Hi there. This noise can become very annoying, especially if it is very loud. If the noise typically occurs when the engine is first started and then goes away it can be the alternator bearing. If it is a constant noise it may be an issue with one of the idler pulleys or the water pump. You should enlist the help of a certified mechanic, like one from YourMechanic, who can who can inspect the noise by removing the belt and spinning each pulley one at a time.

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: Oil pressure high on starting truck

Hello. There could be a problem with the oil pressure sensor giving false readings. It is also possible that the oil pump is starting to fail and sending false readings to the oil pressure sensor. Unless you have experience with...

Q: Won't start periodically

Hi there. Any number of components could create an intermittent no-start situation. The O2 sensors and the PCM (powertrain control module) are remote possibilities. Assuming the check engine light has not come on, this leads me to believe that the...

Q: My vehicle has a Starting/Sometimes running issue. What's wrong?

Hi there. Check to see if the vacuum pump has seized up on the engine. If the pulley is not turning then the belt will make a screeching noise and put a huge load on the engine. The extra load...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.