Serpentine belt fell off

Tiny
TNICOLR
  • MEMBER
  • 2013 CHEVROLET MALIBU HYBRID
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 152,000 MILES
The belt slip off the car the battery light came on it begin to make all the lights come on. I made it to park then the battery died that’s when I realized the belt was off after looking under the hood. I replaced the belt and tensioner. The issue still continued so I replaced the battery and alternator. What could be the real issue?
Monday, March 16th, 2020 AT 10:31 PM

2 Replies

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

This could be a problem with the tensioner failing and causing the serpentine belt to slip off. To be sure that the tensioner is the problem, though, I have included in the diagrams down below a simple diagnostic troubleshooting guide for excessive drive belt slipping off the pulleys. This is from the vehicle manufacturer and should help you pin down the exact reason for this. Please go through this guide and get back to us with what you find out.

Thanks,
Alex
2CarPros
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Tuesday, March 17th, 2020 AT 4:54 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Good morning,

Can you check the voltage at the battery with the engine running?

https://www.2carpros.com/articles/how-to-check-a-car-alternator

What lights are still on?

Do you have a code reader to give me the codes?

Roy
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Tuesday, March 17th, 2020 AT 4:54 AM

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