Re: Deceleration Hum
2010, all stock, auto trans, 50K miles. The tires are new or nearly new, Nexen I think is the brand (basically the cheapest tire the dealer could stick on there). They just have a boring all season tread, not aggressive at all, so a tire would have to have a broken belt or something to be a cause.
The noise seems pretty constant all the way to zero, like when you are coasting on an exit ramp, it just changes in pitch with vehicle speed, so I don't think it is in the tranny or engine. I have not tried coasting in neutral, I will do that. As mentioned, so far I can't tell if the noise is there or not when cruising or accelerating due to engine/exhaust noise. I will experiment a bit with light throttle at highway speeds, maybe I will be able to hear it then. Have not noticed any difference while turning, but I will pay more attention to that. Maybe I will do some swerving to check the wheel bearings.
I am reasonably competent at diagnosing noises like this (I seem to be the only one who is for our work fleet, you wouldn't believe the stuff people ignore in a work truck), but in addition to general diagnosis I just wanted to check if it is "normal" for an FJ. Truthfully though I don't think it is normal.
Oh, it may also be worth mentioning that it has been very cold the last few days, it was minus 10F or so on the way in to work today.
Steve in MN, sponsored by Blue Sun Corporation
2010 FJ, now with exciting grill and shifter knob mods
"Speed has never killed anyone. Suddenly becoming stationary, that's what gets you." - Jeremy Clarkson
Last edited by Serenity Now; 01-13-2015 at 08:18 AM.