Q: I have broken 3 sepentine belts in the last week, i replaced the tensioner pulley as well. What else could be causing my issue?

asked by on

I have replaced the sepentine belt and tensioner pulley, but it seized again and snapped the belt, what could be casuing rhe tensioner pulley to seize again?

My car has 305000 miles.
My car has an automatic transmission.

The pulley has a ball bearing within. The failure mode, or causes of failure, is limited to three possibilities: 1) defective, or worn out, ball bearings; 2) lubrication failure; 3) overloading. To eliminate possibility Nos. 1 and 2 you could try using the OEM Toyota supplied part. As far as overloading, measure belt tension to see if it is excessive. For example, a possibility is you have the wrong belt (too short) and that would increase the load on the bearing. Also, check to be sure that all the pulleys are operating in the same plane. If you want these steps performed by a certified Mechanic, dispatched by YourMechanic right to your location, please request a serpentine belt/rotating elements diagnostic and the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?
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. I have broken 3 sepentine belts in the last week, i replaced the tensioner pulley as well. What else could be causing my issue?

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: Tensioner arm makes noise

The serpentine belt tensioner is always under constant pressure and movement. Over time the spring or hydraulic system used can weaken or fail completely. When failure occurs the tensioner can create excessive noise. The belt tensioner should always be replaced...

Q: Q: Ac compressor

Hi there. It sounds like you may have one or two concerns here. Does the AC indicator light up when you turn it on? If so, this means that the command for AC is active. If the light flashes, this...

Q: Dont know where to start building an engine

Hi there. This actually sounds like a very cool project you're taking on with a 66 Mustang rebuild. However, unless you have access to the right tools to correctly rebuild this 289 Blue Oval small block it might be better...

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...
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...
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...