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I recently bought a '14 Versa Note SV with the CVT that has 63,000km (about 40,000 miles) on it. I've been having an issue with a kind of squealing noise when slightly accelerating when driving at about 50km/h (30mph). If I release the gas pedal, the noise stops but resume as soon as I slightly hit the pedal. The noise stops when I'm accelerating past 60 km/h (about 38mph) or so. Also, it stops if I'm accelerating harder. First went to the used car dealer I bought it from and they told me it was the serpentine belt that was making the noise, which was kind of surprising to me since it makes absolutely no noise at idle. They cleaned the pulleys and reinstalled the belt. Noise was gone for about 2-3 days and then came back as usual.
I've read a post on the Murano Forum that states about the same issue as I'm having on a '09 Murano with a CVT. link
Need help on finding what may be causing this. A CVT going bad? Anybody here had the same issue?
Powertrain warranty from Nissan ends on Dec. 2018 or 100,000KM.
Thanks for helping.
If the noise went away for a couple of days, I would say your serpentine belt needs replacement, or there may be other issues. If it was the transmission, the noise would have not gone away at all. Listed below are other items associated with the belt that can cause problems:
So when, exactly, does one of these belts need to be replaced? Usually, you get plenty of warning before you hear the final Bad Noise, to wit, that squealing. A squealing noise is indicative of a problem, but might not require replacement of the belt. Misaligned pulleys or a seized tensioner or idler pulley can generate some noise as well.
A belt that's starting to disintegrate will show damage to the ribs or cords, which can usually be seen without dismantling anything. But you might need a flashlight and a dental mirror to see the fraying or cracking.
Thanks for replying.
What they told me when I got my car back last week was that there was a pulley (or multiple pulleys, that I don't know) that had a little bit of surface rust on it that was causing some kind of tension when accelerating that made the belt squeal. They told me they cleaned the pulleys thoroughly and applied some protection to them. What I find strange in that claim is that it only does that between 48 and 58 km/h. (I am no mechanic but I am wondering why it would only make the noise in this speed range). I don't know if they checked for misalignment or bad pulley bearings.
Is there an easy way to check for misalignment by myself, or any pulley issue at all? (If pulleys were misaligned though, wouldn't the noise be heard on idle/neutral as well?)
Does the fact that it only makes the squealing noise if I accelerate slowly/normally consistent with the claim of the serpentine belt/pulley assembly issue? (If, for example, I accelerate a little harder (3000RPM and up), there's no noise at all).
Give this a look, and it will explain some of the ways to diagnose where the problem actually is. Good luck!!
How to Fix a Squeaky Belt (figure out where the squeak is coming from) - YouTube
|cvt , cvt squealing , noise|