Valdemar
Posts: 2621
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: Faint gear like noise at low speeds.

Fri Oct 26, 2018 9:53 pm

DaveinOlyWA wrote:In my case, it was a TSB to grease axle and bearings. 12-055F
That was for a single clck when accelerating.
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB), -1CB(53.92Ahr)@140k/29mo,
51.1AHr, SOH 80%, 150k miles

9kW Solar

DaveinOlyWA
Posts: 14097
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Feb 2018
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: Faint gear like noise at low speeds.

Sat Oct 27, 2018 7:10 am

Valdemar wrote:
DaveinOlyWA wrote:In my case, it was a TSB to grease axle and bearings. 12-055F
That was for a single clck when accelerating.
accelerating or decelerating
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 15,000 miles, 478 GIDs, 37.0 kwh 109.81 Ahr , SOH 94.61, Hx 120.15
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

coolorangecat
Posts: 9
Joined: Sat Jun 25, 2016 10:17 pm
Delivery Date: 28 Jan 2016
Leaf Number: 021788

Re: Faint gear like noise at low speeds.

Sun Oct 28, 2018 7:10 pm

Okay i replace the passenger side CV axle. I got to say it was a pain in the butt to get the cv bearing wheel on the passenger side off the bearing support bracket. If anyone does this the best way is to remove the support bracket and then gently hammer and slide it out, with the whole axial. Even with a hammer slide there is no way you could get my cv out if it is stuck on the bearing bracket. There's definitely a big difference in sound. It is not as loud but now I can hear it from the other side. Which I didn't replace both of them. But the best thing I found is my miles per kwh has gone up a lot. Like from round 3.8 to around close to 5. Most of my driving is around 30 to 40 miles an hour. This could be really interesting if people are getting lower miles per kw in older leafs and can't figure out why. I know it takes a little bit of time to redo the average but I've redone the average after I switched out a bunch of parts just last week and then this weekend.

I'm going to do the other side this weekend takes about a week to get the part in from RockAuto and then see if it totally gets rid of it. Even if it doesn't it gotten so much quieter now (not that it was loud) it really is not going to matter. I almost don't even want to do the other side but why not.

Valdemar
Posts: 2621
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: Faint gear like noise at low speeds.

Tue Nov 06, 2018 12:47 pm

Was at a dealer for other reasons and had them check the noise today. It took some time for them to even notice it. They think it is the traction motor, but they said it is hard to pinpoint the source exactly so could be the reduction gear too, basically the noise was coming from the motor area when they lifted the car, so not a CV joint which is consistent with the symptoms as turning the wheels doesn't make the noise louder. Given a new traction motor is a $9.5k job the recommendation was to just drive the car until things get worse, which I'm going to follow to the letter.
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB), -1CB(53.92Ahr)@140k/29mo,
51.1AHr, SOH 80%, 150k miles

9kW Solar

coolorangecat
Posts: 9
Joined: Sat Jun 25, 2016 10:17 pm
Delivery Date: 28 Jan 2016
Leaf Number: 021788

Re: Faint gear like noise at low speeds.

Sat Nov 17, 2018 10:45 pm

I replaced my other cv axial. Still have the continuous clicking at low speeds. Everything has been replaced from the wheels to the reduction gear. So I agree either the motor or gear is making the noise. This is as far as I am going on this issue too.

Valdemar
Posts: 2621
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: Faint gear like noise at low speeds.

Sun Nov 18, 2018 1:12 am

The dealer mechanic I spoke with said they've done several failed traction motors replacements under warranty, makes me wonder how much time do I have left on mine.
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB), -1CB(53.92Ahr)@140k/29mo,
51.1AHr, SOH 80%, 150k miles

9kW Solar

coolorangecat
Posts: 9
Joined: Sat Jun 25, 2016 10:17 pm
Delivery Date: 28 Jan 2016
Leaf Number: 021788

Re: Faint gear like noise at low speeds.

Mon Nov 19, 2018 3:46 pm

I have 90K on mine right now with 12 bars. Going to be a big let down if the motor fails before anything else. Was hoping to have this car for a while. Now I am going to have to wait and see. Keep me updated if anything changes with the traction motor.

corrisi
Posts: 16
Joined: Sat Jul 20, 2019 1:09 am
Delivery Date: 09 Apr 2019

Re: Faint gear like noise at low speeds.

Sat Jul 20, 2019 1:47 am

Valdemar wrote:Was at a dealer for other reasons and had them check the noise today. It took some time for them to even notice it. They think it is the traction motor, but they said it is hard to pinpoint the source exactly so could be the reduction gear too, basically the noise was coming from the motor area when they lifted the car, so not a CV joint which is consistent with the symptoms as turning the wheels doesn't make the noise louder. Given a new traction motor is a $9.5k job the recommendation was to just drive the car until things get worse, which I'm going to follow to the letter.
Hi All!
3 months ago I bought a nissan leaf 1 mk2 of 10/2015 which currently has 35k miles. From the first day I noticed a noise similar to that described by Valdemar, where at low speeds( 20-40 km/h) with windows closed and the radio turned off I hear a continuos noise "ta ta ta" only when I accelerate forward. Accelerating for back (Mode R) does not make the noise. Whenever I take my foot off the accelerator the noise stops.
I leave a video I made today. Look at the acceleration and regeneration engine chart and see how the noise does only when i accelerate.

https://photos.app.goo.gl/EMTWWZoYgSaUQgJA6

I Would like to know if the noise is similar to yours and what is your opinion? Do you think it could be the gear reduction or the traction motor?
I already went to the official nissan representative this week where I made the 4 year revision in advance because of this problem and the diagnosis is not easy. They have seen everything, the axles,wheels, grips, lubrication and apparently everything is fine. They said that the next step will be to replace the gear oil , which is a bit dark and if it remains, it may be necessary to remove the gear to see its condition.

Valdemar
Posts: 2621
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: Faint gear like noise at low speeds.

Sat Jul 20, 2019 8:45 am

I can't isolate the noise you're describing in the video when watching on my phone. In my case first I noticed was a sound at very low speeds like 2-4 mph, which sounded like old gear working if you can imagine that, sort of hearing how gear teeth engage. Over last 40k miles that sound became louder and now I hear a hum-like low frequency noise at freeway speeds I mentioned above, it's not there when I let go off the accelerator pedal. Given the sound frequency it does sound like gears.

The good news (for me) is that this is a very slow process and it may take another 50k miles before it actually becomes a real issue, and at 200k miles on the odometer my Leafy will have fully served is purpose and will be disposed of without hesitation.
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB), -1CB(53.92Ahr)@140k/29mo,
51.1AHr, SOH 80%, 150k miles

9kW Solar

LeftieBiker
Moderator
Posts: 12958
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Faint gear like noise at low speeds.

Sat Jul 20, 2019 1:50 pm

I can't hear it in the video either, watching it on a PC with an Altec Lansing speaker dock as my sound system.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

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