Odd smell coming from transmission? Help!!
#1
Odd smell coming from transmission? Help!!
Hey, i really am stumped about this, its a 09 is350, the car drives great in all conditions, but when ever i step on gas and the car downshifts a strange odor comes from the transmission, (in my opinion), it only does this if i step on the gas and the car downshifts or if I manually downshift in sport mode, it still drives normal, but the odor comes out, I have pulled over during this time and cannot find where the smell is coming from, so Im guessing its the tranny, any thought on this?? please..
#6
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Sounds like what Mike mentioned as being a sulfur-type smell. It usually happens once, maybe twice, during an single one outing. It will happen when at WOT or in the higher rpms, as the cats are attempting to convert the expelled sulfur dioxide into a less harmful gas. The cats either are clogged or damaged, thus not allowing the gases to be converted properly.
#7
If it smells like rotten eggs, that's a sulfur smell and most likely coming from the cats.
I've owned 4 Toyotas and now a Lexus, and every Toyota I've owned has this smell under 'hard' acceleration.
I haven't noticed it on the Lexus, but I wouldn't be surprised if it did it too...
As for the transmission smell, if your transmission smelled, that would indicate burnt fluid or clutches. You'd definitely have other symptoms if it was the transmission- slippage, poor operation, engine would rev without movement, etc...
Have you checked under the car for any leaking fluid?
I've owned 4 Toyotas and now a Lexus, and every Toyota I've owned has this smell under 'hard' acceleration.
I haven't noticed it on the Lexus, but I wouldn't be surprised if it did it too...
As for the transmission smell, if your transmission smelled, that would indicate burnt fluid or clutches. You'd definitely have other symptoms if it was the transmission- slippage, poor operation, engine would rev without movement, etc...
Have you checked under the car for any leaking fluid?
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#8
Actually, the smell comes from the cats oxidizing sulfur in the fuel, creating sulfur dioxide, not in the reduction of it, causing the smell.
If the smell is like rotten eggs, try changing the fuel you use as high sulfur content is a likely cause, and the easiest methodology to try. Give it at least a full tank and don't use any additives before deciding.
If the smell is like rotten eggs, try changing the fuel you use as high sulfur content is a likely cause, and the easiest methodology to try. Give it at least a full tank and don't use any additives before deciding.
Last edited by xhackr; 12-27-14 at 01:36 PM.
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