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.
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.
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.