Q: I just got my serpentine belt replaced and it's squealing when I start the car and sometimes when I hit the gas

asked by on March 14, 2017

I just got my serpentine belt replaced and it's squealing when I start the car and sometimes when I hit the gas what is this do I need a fan belt??

My car has 134000 miles.

Serpentine/Drive Belt Replacement $96.60 - $325.96 Get a Quote

Noise of that type is due to a failed or failing bearing in one of the pulleys or accessories (e.g., alternator, water pump, A/C compressor) that is driven by the serpentine belt, the belt is not properly tensioned, or the rotating pulleys driven by the belt are not all in the same plane. I would first check to make sure that all of the pulleys are aligned. It is not unusual, for the pulley on the crankshaft harmonic balancer pulley to move (generally outward) relative to its original position. The pulley is rubber bonded and over time can move. If that pulley moves, that means that the belt groves are no longer running in a perfect plane and that alone can cause noise. With regard to the various ball bearing (and greased) mounted pulleys and accessory pulleys, the grease in those bearings eventually dries out and that can contribute to or cause noise of the type you are describing. If you request serpentine belt inspection - noise diagnostic a certified Mechanic, dispatched by YourMechanic right to your location, will identify the origin of the noise that you are hearing and thence get the issue resolved for you promptly. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

All the dash lights come on and air stops working but the car still runs.

my 2008 impala has a high pitch "whine" noise when i start in cold weather and sometimes "whine" turning the wheel too

Whining noise is often traced to the power steering pump. Among the things to check are low fluid level in the pump reservoir, air in the fluid, degraded fluid, and inadequate tension on the pump drive belt. The pump itself...

2001 Mercury Villager. The engine surges in Neutral and Park. Normal in drive. But noise and jerk during gear change.

This may be a sign of a faulty MAP sensor as the vehicle responds adversely to a load put on the motor (i.e. putting it in gear, making turns (which makes use of the power steering pressure switch) turning on...

EPC light on 2004 Jetta. Code said brake switch faulty, but brakes lights worked. Replaced brake switch, now no brake lights.

Hi there. The first thing that pops in my mind beyond of what you have listed is perhaps the electrical harness attached to the brake switch. Perhaps the harness itself is damaged or you have an exposed wire, loose ground...

My 2017 Dodge Challenger Parkview won't come on the screen.

A common failure for these systems is water intrusion into the camera. If you look closely at the lens and see a droplet of water inside the camera, moisture has made it's way into the unit and may have caused...

Trunk won't open with either key or trunk lever.

You will need to call a vehicle locksmith to check lock and get into the vehicle trunk for you. If the lock is seized then the lock may need to be drilled out and replaced. The latch may be damaged...

My truck is shaking.

Hello There, It sounds like you may have a faulty fuel pump that may have been damaged as a result of running it out of fuel. As you may know, today's fuel pumps require the fuel to keep them cool...

Does the throttle position sensor and thermostat need to be changed before I take a three hour trip?

The code for the thermostat is due to the engine coolant is not getting up to operating temperature quick enough and is due to a stuck open thermostat most likely. The TPS code may be an intermittent issue with sensor...

Crank no start

You will need to have the engine scanned for codes and diagnosed for loss of spark or fuel. Your water pump is driven by the timing belt, and if the belt broke or water pump seized, then you may have...

Related articles

2012 Ford Escape vs. 2012 Honda CR-V: Which One Should I Buy?
SUVs represent one out of every three vehicles sold in 2012, making them one of the most-purchased types of vehicles in the country during that time period. Compact SUVs are a sub-class that are slightly smaller and offer the most...
The Best Used Cars to Buy for First Time Car Owners
Owning Owning your very first car is an exciting time in a person’s life. Likely you want to put a lot of thought and research into the process to ensure you get something that meets your needs, is fun to...
Top Five Selling Cars in Colorado in 2012
Colorado Colorado offers a varied climate depending on where drivers are located. Those in lower elevations see plenty of sunshine all year, while those in the mountain areas can see as much as 300 inches of snow. Due to this,...