Skip the auto shop - Our mechanics make house calls

Q: Serpentine belt keeps coming off

asked by on

Never had this problem before I'm thinking it's one of the Pulleys . And do they just go out of line ? I don't know

My car has 15000 miles.
My car has an automatic transmission.

A: The pulleys will not just lose their alignm...

The pulleys will not just lose their alignment. For this to happen, there has been a failure somewhere. One of the most common causes I have found for this problem, on a serpentine belt system, is that the belt tensioner has failed and the pulley allows the belt to move around. However, the best way to troubleshoot the situation would be to remove the serpentine belt and check each individual component. Check the pulleys on each component to see if a bearing has too much play in it, or if something has loosened up and allowed the component to move around. If this is something you feel you could use a hand identifying and/or fixing, contact a certified mechanic, like those available at YourMechanic.com.

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・Save up to 30%

Get a quote

What others are asking

Q: Car makes a whine noise when i drive from take off to about 30mph and then goes away

Based on the information you provided, it sounds like the noise may be coming from the transmission. There are a few technical service bulletins about transmission whining noises. Have a certified professional inspect the noise in person in order to...

Q: How do I know what size (volts) alternator I should order for my 06 Cadillac CTS 3.6?

Hey there. If you cannot find any markings on the alternator, then you can call or visit the local dealer with your vehicle identification number to the parts department and they should be able to tell you the exact part...

Q: Shuddering and noise from the right front tire area

Hello. The suspension system contains rubber bushings that help dampen the vibrations caused by an uneven road surface. Badly worn bushings or ball joints can cause noises and vibrations during vehicle operation. To have this checked, enlist the help of...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.