Skip the auto shop - Our mechanics make house calls

Q: Belt keeps slipping off

asked by on

Old beltslipped off nrw belt does thessme changed pully

My car has 77000 miles.
My car has an automatic transmission.

The possible causes of this include that the pulleys are not all in the same plane, the pulley on the harmonic balancer has shifted due to a break in the rubber bond, the belt tension is inadequate and/or the bearings on which the pulleys (or accessories) are mounted are worn or seized. To remedy this problem, a diagnostic is performed to figure out which parts have failed and need to be replaced. The belt will have to be removed (so all pulleys can be inspected) and replaced. Even if the existing belt can and will be reused the recommended service to request is a belt diagnostic/replacement and the responding certified mechanic will take it from there. This problem will be resolved very readily as the possible causes are limited in number.

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
  1. Home
  2. Questions
  3. Belt keeps slipping off

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: 2011 Ford Fusion idling rough and stalling out

The power brakes on your vehicle rely on engine vacuum. If a vacuum leak were to develop anywhere after the supply leaves the intake manifold, on its way to the brake booster, the engine could run poorly. To diagnose this...

Q: my car has theissue that it often lose power steering suddenly while turning.nothing leaks but there's clunky noice when turning

The only way to determine if the collision caused damage is to carefully MEASURE the alignment and, as well, the frame dimensions using a tram. If those steps have not been specifically taken, what the mechanics have told you about...

Q: How to tighten a serpentine belt ?

Hello, thank you for writing in. You cannot tighten a serpentine belt. There are two considerations to make. One, is that the belt stretches out over time, and will end up being too long to function correctly. In this case,...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...