Skip the auto shop - Our mechanics make house calls

Q: Just replaced both belts on 2008 Fx35 infiniti.

asked by on

Just replaced both belts on 2008 Fx35 infiniti. Now I'm thinking I should have done the pulleys as well. It has an idler pulley for each belt, and also a tensioner pulley for each. The idlers are pretty cheap, the tensioners are very expensive. Also, the idler pulleys are much more widely available, while the tensioners are not. Is this because the tensioners don't need to be replaced very often because they last longer? I'm thinking to replace the idlers only. Thanks,Dan

A: Hey Dan, thanks for inquiring. I don't ...

Hey Dan, thanks for inquiring. I don't know that you necessarily need to replace your pulleys, neither tensioner or idler. However, if you are hearing a squeaking from your engine and suspect the pulleys are the problem then replace them as needed. I don't think you really need to replace pulleys every time you replace the belts.

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: Warning lights coming on and car not starting.

Your vehicle has a complex engine control system that can self diagnose issues most of the time. Start with having the computer read to see if there are any codes stored that may be causing the issue. I recommend having...

Q: Passenger seat belt system failed - 2008 BMW 528xi

The SRS system needs to be interrogated for faults. Faults in the supplemental restraint system (SRS) will effect the triggering logic of the airbags in the event of an accident so it is highly recommended that you get the system...

Q: Suspension Problems

Since your issue is more noticeable when you hit bumps or potholes, your problem may reside with the spring/strut assembly. It could be a worn or broken strut, worn strut mount, or even a broken spring. If you raise the...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...