T4styPh0

iTrader: (2)

Hey, I just have a quick question about a howling sound when I'm slowing down. Everytime I floor it and let off or just sorta gasing it and letting off, there's this howling type sound. I don't remember this happening on my 250. Should this be something to be concerned about? Thanks in advance

ba-b4

tires? tires howl

iKenn

iTrader: (1)

maybe theres a wolf in your car?

hah or not

can u record it? so we know more of this "howl"

jns350

iTrader: (7)

Check around your air intake box where your air filter sits and make sure the upper and lower section in closed correctly. Your profile shows no aftermarket intake. Also check for no exhaust leaks and muffler is intact.. I have seen these items cause noise during deceleration...

nsxiboi

iTrader: (2)

This guy probably has turbo and blow off valve. Hook me up bro!

T4styPh0

iTrader: (2)

I'm not sure if it is the tires, I didn't have this problem on the 250 at all. But then they were potenza instead of turanza which I have now. Lol wolf, that's a pretty descriptive of the sound though but yeah, I'll try and record it next time with the digi. Yup, engine is stock and I'll make sure everything is button up tight around the airbox. Ha! Shee I wish I had turbo! Woooooom pshhhhhh

Brian231

I think you better take a look at this!!!

https://www.clublexus.com/forums/sho...d.php?t=354123

lexi06

Could be the wheel spokes making a howl when the wheels are spinning.

T4styPh0

iTrader: (2)

I don't know if it is the wheels but like I said, on my 07 250 I had the same 18" but didn't make this howling sorta whistling sound when letting off the gas. If I can't find what's causing this I guess it's on to the dealership I go.

lexi06

Rev the engine while in Park or Neutral, see if you hear the same noise.

ba-b4

Yeah well different tires make different sounds so it could be you're not used to it. Another thing that I can think of that "howls" on a car is maybe the differential. I remember when I had my WRX that when letting off the gas there is a howl/humm type of noise/vibration. It was normal on that car though. If it's on your IS though that's not normal because my IS never has that kind of noise. You should just bring it to service and have it checked out instead of having people on the forum try to guess what it is without hearing it. If it is your differential and it has like a fluid leak or something the longer you delay the worse the damage is going to be.