Skip the auto shop - Our mechanics make house calls

Q: serpintine belt and tensioner pulley replacement.

asked by on

Drove normally then all lights on cluster came on. Power steering went out. Pulled over, looked under car and saw the serpintine belt hanging on ground. Got new belt and tried puttin on with no luck. Noticed the tensioner was not fully going back enough to allow the belt to be put on. Got a new tensioner pulley today and about to attempt to replace it. Any tips or advice will be greatly appriciated. Thanks.

My car has 53486 miles.
My car has an automatic transmission.

Hello. Thanks for writing in. Obviously you will want to clear some room to have access to the tensioner. This is easiest done by removing the radiator. Once you have the old tensioner removed, you simply reverse the process to install the new one. There is no big trick to doing it. Make sure you have it installed correctly and torqued down to the proper specification. With the new tensioner in place, make sure you route the new belt in the correct path. There should be a belt diagram which shows you how to route it. Also make sure the belt matches the exact belt you removed from the vehicle. This can also cause issues with the replacement. Take your time, and pay attention to the other components as you perform the repair; as this is a great opportunity to have a good look at the outside of the engine.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Car not going into second gear

This could be a linkage issue, such as a shifter cable. The problem could also be the synchronizers inside the gearbox keeping the gear from engaging. If so, the gearbox will need rebuilt or replaced. I would have a qualified...

Q: squeaky idler pulley

Replace the entire tensioner assembly since the tension is what caused the pulley to go bad. You should also replace the belt if any damage is noted.

Q: is it possible to replace the a/c clutch and bearing on a mazda protege 5 without replacing the compressor

On almost all A/C compressors, it is possible to replace the clutch without replacing the entire unit. To replace the clutch requires a special tool kit for doing just that. The A/C compressor does have to be removed from the...

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...
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...
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.