HELP - Whats the smell?????
#1
HELP - Whats the smell?????
I know this sounds funny, but when i push on my car, and then come to a stop right after, even if its a 1/4 - 1/2 mile later or so, the inside of my car begins to smell BAD. The closest thing i can relate it to would be like rotten eggs, but thats really not overwhelming. If i put my nose to the fents that are blowing air, the smell is stronger but the smell is def there. Does anyone know what it could be???? Does anyone have/had this problem and tell me what i can do to fix it??
PM or email would be great too - morovasa@shu.edu
PM or email would be great too - morovasa@shu.edu
#4
I have heard this before and was pretty sure the cat can cause the smell. I did a little research on the internet and found this explanation:
The reduction section in your catalytic converter, the part that changes NOx and some CO (carbon monoxide) back to N2 and CO2, also has the tendency to start absorbing SOx, or oxides of sulfur when its internal temperature drops below about 500°C. As Pat stated, sulfur is a natural contaminate in most fuels which, when burned, are emitted as oxides of sulphur.
When the engine is required to put out more power and the catalytic converter heats up over 600°C, the catalytic converter starts releasing the SOx as H2S and SO3. The SO3 has no odor but the H2S (Hydrogen Sulfide) gas does, which is what you smell. That usually means the reduction section of your converter IS working, regenerating itself, and purging the accumulated sulphur. The older your O2 sensor and catalytic converter is and the slower they react, the more H2S you'll tend to get.
Because sulfur reduces the catalytic converters efficiency in converting NOx, it's conentration in gasoline and motor oil is being reduced in the U.S. (eventually close to zero) by EPA and CARB pressures. Most standard U.S. emissions tests check for NOx emissions but don't (yet) check for SOx or H2S emissions.
Hope this helps.
The reduction section in your catalytic converter, the part that changes NOx and some CO (carbon monoxide) back to N2 and CO2, also has the tendency to start absorbing SOx, or oxides of sulfur when its internal temperature drops below about 500°C. As Pat stated, sulfur is a natural contaminate in most fuels which, when burned, are emitted as oxides of sulphur.
When the engine is required to put out more power and the catalytic converter heats up over 600°C, the catalytic converter starts releasing the SOx as H2S and SO3. The SO3 has no odor but the H2S (Hydrogen Sulfide) gas does, which is what you smell. That usually means the reduction section of your converter IS working, regenerating itself, and purging the accumulated sulphur. The older your O2 sensor and catalytic converter is and the slower they react, the more H2S you'll tend to get.
Because sulfur reduces the catalytic converters efficiency in converting NOx, it's conentration in gasoline and motor oil is being reduced in the U.S. (eventually close to zero) by EPA and CARB pressures. Most standard U.S. emissions tests check for NOx emissions but don't (yet) check for SOx or H2S emissions.
Hope this helps.
#10
sounds like your catalytic converter or O2 sensors. that smell is your exhaust seeping into your car after your run. my turbo'd honda smelled just like that cuz i was running it with a test-pipe. i sold the bish, and hopefully the new owner puts a cat on there.
#11
Thanks for everyones help with this. I dont have any sensor on (well yet atleast) and i do drive HARD on my car so i'm not surprised at what you guys are telling me.
Zargon, thanks for your info man!
Tedor007 - nah man its not my mouth, but that may be yours problem, HAHA Just playin.
Zargon, thanks for your info man!
Tedor007 - nah man its not my mouth, but that may be yours problem, HAHA Just playin.
#14
so when i change it to my high flow cat i shouldnt have a problem with the smell anymore right?
Is there anything i can do now until i put on my high flow cat? Other than checkin the o2 sensor (its pretty new so i dont think it has a problem)
Is there anything i can do now until i put on my high flow cat? Other than checkin the o2 sensor (its pretty new so i dont think it has a problem)
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