Low frequency flutter when idling!!
I recently got my Altima Hybrid. I am in love with the looks and the EV mode performance. The only hassle or rather the irritation I have is when the gas mode kicks in when the car is idling even after the car engine has warmed up. You can hear a very distinct low frequency flutter from the gas engine probably because of the low rpms. The gas mode kicks in when the battery is almost empty. This happens when you run the AC while the car is idling for a long time in EV mode to discharge the battery.
I had a toyota corolla before. This same problem (low rpms issue) appeared after like 15-20K miles on the car. A new car having this problem is putting questions in my head. If the rpms on a non-hybrid car are over 1000 rpms you dont hear it. But when it goes below 1000 rpms then you hear it.
Does anyone have this problem in their NAH and is this in anyway going to affect the car in the long run?
I took the car to the dealership and the tech gave me a reason that the sound was coming from the ac generator. I thought it was a bunch of garbage. I am an EE i know for sure that AC generators make a hum and not a flutter. The flutter I think is caused by the low rpms.
All is well that ends well!!
Thanks for your response. Just to clear my head out, I went and test drove 2 other brand new hybrid cars which had less than 12 miles on them and they had a similar flutter too. So I think its to do with the hybrid engine design in conjuction with the nissan's CVT. So I guess I have to say I am being paranoid about nothing. :). Good for all the other hybrid owners. Anyway... Have fun with your NAH. Hopefully I will have a good time too... I will be making my first long trip this weekend. Thanks again.