High pitch whine when the throttle is pressed - Nissan Murano Forum
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post #1 of 6 Old 04-13-2019, 12:46 AM Thread Starter
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Angry High pitch whine when the throttle is pressed

I have the gen 3 murano 2015 with 90k miles. I had the cvt oil changed about 15k miles back. Since 2 weeks i am hearing this weird whine when i press the throttle on the freeway. When I let my foot of the throttle the sound goes away. Quite disconcerting. Also i checked the cvt level by putting in a flat metal wire and it measured 60mm fluid level after being parked for about 3 hours. fluid seemed colorless and clean. I would not say I have any issues with transmission at this time(fingers crossed). Should I do a cvt oil change again or what could be the issue. Please share thoughts. Thanks
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post #2 of 6 Old 04-13-2019, 07:46 AM
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If you have AWD, I would be looking at the transfer case and rear differential, unless you know with absolute certainty that the sound is coming from the CVT.


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post #3 of 6 Old 04-13-2019, 12:53 PM Thread Starter
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It's a FWD
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post #4 of 6 Old 04-15-2019, 03:39 AM Thread Starter
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CVT oil changed

So i decided to change the cvt oil and with the help couple of youtube videos turned out to be fairly easy task. I only got 3Qts out vs 4Qts I read for other posts. I replaced with 3.25 quarts and checked the overflow valve. Seems to be good.


The change in cvt oil did not however get rid of the sound. So still looking for other suggestions. Is there anything to check with engine valves ?
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post #5 of 6 Old 04-15-2019, 10:14 AM
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Cracked Vacuum line?
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post #6 of 6 Old 04-15-2019, 10:22 AM
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Quote:
Originally Posted by avf View Post
... i am hearing this weird whine when i press the throttle on the freeway. When I let my foot of the throttle the sound goes away. ...

from these, i'd suspect a vacuum leak (especially if its more of a whistle than a whine).
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