Skip the auto shop - Our mechanics make house calls

Q: Lost tension on the tensioner

asked by on

I went to change alternator after everything was done, started it up and serpentine belt came off. Looked under seen that i lost all tension in the tensioner bar.
My car has a manual transmission.

A: Hi there: This actually happens more often...

Hi there:

This actually happens more often than you might think and is caused by one of two things. Either the tensioner is not properly aligned and installed correctly or it was damaged when the serpentine belt broke. In either case, since the serpentine belt broke, you should replace the tensioner, the pulleys and the serpentine belt to ensure this doesn't happen again.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Head gaskets failed how likely is it to happen again?

Hello! Thank you for writing in with this question. The design of the “boxer” engine makes for a high probability of head gasket problems. Coolant and oil drainage isn’t like typical “V” or inline style engines, so coolant and oil...

Q: My car wont start

Hello. If the engine will crank and not start then we would need to see if it is lacking spark, fuel, or compression. If it does not have a spark then the ignition system needs to be diagnosed. If it...

Q: Car won't start after replacing starter and battery

Hello. There could be several possibilities for why your car isn't starting after replacing your battery and starter. The timing belt could be broken, you could have no spark going to your spark plugs, or your fuel pump might not...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.