Strange smell during acceleration
11-11-13, 05:42 PM
#1
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Strange smell during acceleration
How is it going fellow CLers? I have a problem with my 07 IS350 with 205,000 miles. During medium to hard acceleration their is a smell that I can't seem to figure out. When I told the dealership about it they could not replicate the smell. They replaced the cap of the coolant thinking it might be coolant spilling onto a hot engine but that wasn't the problem as it still exists. I will be telling them to check again but I wanted to see if anybody here has any experience with this problem or any ideas of what it could be. Thanks for all the help in advance.
11-12-13, 01:57 PM
#7
Lexus Test Driver
Also there is a EGR line under your intake between the engine and the strut tower. I accidentally unplugged mine the other day and I got a weird smell through out the cabin with the vents open. Check those lines, maybe it maybe unplugged or a hole in the line that emmits these gasses and makes your cabin smell.
Also test one is when was the last time you changed your cabin filter?
Also test one is when was the last time you changed your cabin filter?
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11-12-13, 08:46 PM
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It is hard to describe the smell but the closest description would be slightly rotten. I will have the cats checked out and also look into the EGR line. Thanks for all the inputs.
11-13-13, 12:35 PM
#11
Alotta mis-information on the cats around here; the cats are actually working FINE when you smell the odd eggish odor. Here's the first intelligent posting I found online quickly that explains it :
"On some vehicles, a sulfur smell or 'rotten egg' odor may be noticed coming from the exhaust system. The odor
is usually noticed after a cold start, fast idle, extended periods of idling and full throttle acceleration. Sulfur smell
is not an indication of an engine concern and will not cause reduced driveability or durability of the engine or
any of its emission components.
The sulfur smell or 'rotten egg' odor is caused by high amounts of sulfur in the gasoline being used in the vehicle.
Sulfur is normally eliminated during the refining process, but the EPA regulation of sulfur in gasoline differs
from state to state. Vehicles using fuel containing high amounts of sulfur will most likely emit sulfur smell from
the exhaust system.
When high sulfur fuel is burned, there is a chemical reaction in the catalytic converter causing the sulfur to oxidize.
As the vehicle is driven, the oxidizing reaction odor in the converter will decrease with mileage and age."
My '06 IS350 still has this odor when I outright flog it at WOT for at least 5 seconds.
"On some vehicles, a sulfur smell or 'rotten egg' odor may be noticed coming from the exhaust system. The odor
is usually noticed after a cold start, fast idle, extended periods of idling and full throttle acceleration. Sulfur smell
is not an indication of an engine concern and will not cause reduced driveability or durability of the engine or
any of its emission components.
The sulfur smell or 'rotten egg' odor is caused by high amounts of sulfur in the gasoline being used in the vehicle.
Sulfur is normally eliminated during the refining process, but the EPA regulation of sulfur in gasoline differs
from state to state. Vehicles using fuel containing high amounts of sulfur will most likely emit sulfur smell from
the exhaust system.
When high sulfur fuel is burned, there is a chemical reaction in the catalytic converter causing the sulfur to oxidize.
As the vehicle is driven, the oxidizing reaction odor in the converter will decrease with mileage and age."
My '06 IS350 still has this odor when I outright flog it at WOT for at least 5 seconds.
11-13-13, 08:11 PM
#13
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Alotta mis-information on the cats around here; the cats are actually working FINE when you smell the odd eggish odor. Here's the first intelligent posting I found online quickly that explains it :
"On some vehicles, a sulfur smell or 'rotten egg' odor may be noticed coming from the exhaust system. The odor
is usually noticed after a cold start, fast idle, extended periods of idling and full throttle acceleration. Sulfur smell
is not an indication of an engine concern and will not cause reduced driveability or durability of the engine or
any of its emission components.
The sulfur smell or 'rotten egg' odor is caused by high amounts of sulfur in the gasoline being used in the vehicle.
Sulfur is normally eliminated during the refining process, but the EPA regulation of sulfur in gasoline differs
from state to state. Vehicles using fuel containing high amounts of sulfur will most likely emit sulfur smell from
the exhaust system.
When high sulfur fuel is burned, there is a chemical reaction in the catalytic converter causing the sulfur to oxidize.
As the vehicle is driven, the oxidizing reaction odor in the converter will decrease with mileage and age."
My '06 IS350 still has this odor when I outright flog it at WOT for at least 5 seconds.
"On some vehicles, a sulfur smell or 'rotten egg' odor may be noticed coming from the exhaust system. The odor
is usually noticed after a cold start, fast idle, extended periods of idling and full throttle acceleration. Sulfur smell
is not an indication of an engine concern and will not cause reduced driveability or durability of the engine or
any of its emission components.
The sulfur smell or 'rotten egg' odor is caused by high amounts of sulfur in the gasoline being used in the vehicle.
Sulfur is normally eliminated during the refining process, but the EPA regulation of sulfur in gasoline differs
from state to state. Vehicles using fuel containing high amounts of sulfur will most likely emit sulfur smell from
the exhaust system.
When high sulfur fuel is burned, there is a chemical reaction in the catalytic converter causing the sulfur to oxidize.
As the vehicle is driven, the oxidizing reaction odor in the converter will decrease with mileage and age."
My '06 IS350 still has this odor when I outright flog it at WOT for at least 5 seconds.
