I have had the P5 for over a year now, and have 20582km on it. Any packaging material in the muffler would've have been expended by now, but why does it still smell like rotten eggs?

I had a CAI put in for several months, and removed it 1 month ago. I checked all the CAI components at that time-all clean and nothing problematic. I today checked the stock intake components-the same as above.

Could it be a bad O2 sensor, a bad catalylic converter etc?


What could be the problem?

Any help would be much appreciated

 

I have never known of a car with a cat that DIDN'T smell like this.....ESPECIALLY after running it on the highway for a while...or after/during hard acceleration. its part of life with a car with a cat.

 

Is the smell all the time or only when the car hasn't warmed up enough?
If it happens when the car is cold, the computer is in open loop. Car maufacturers use this setting like the choke in a carburated car...for cold starts. What happens is the injectors are running a higher cycle...injecting more fuel to keep the car running and to help bring the car to operating temp faster in which it will switch to closed loop, reading info from a select number of sensors. This is normal.
If it happens when your car is warm(all the time) take the car out for a good spirited thrashing (have some fun with it ) This will clean out any emissions deposits stored in the catalytic converter. If the problem persists, consult your dealer.
I have been told the Pros are know for occasional rich fuel conditions. The chance of the O2 sensor being bad is rare, especially as the Pros have 2 O2 sensor (I'd think the computer could pick up on a problem (code) easily comparing the 2 sensor readings)

 

why why why?

you want to know why?

did you not notice all these posts about it?

did you not notice me telling people there's a TSB about it and that it's normal?

There's you answer!

 

well talk about this topic , i also get smell but only when racing(highrev) and sometimes going up a slope for a long period of time .
but the thing is that i get a smell cloes to rotonegg but wayalot sourish
(24600 mi)

 

did you get a fart pipe? lol j/k

 

I had the same problem too, but i read an article the dealership gave me while i was waiting for the car to get serviced, and it said to try a different gas station, or a different gas station in a different geographical area...

seemed to work for me, i don't get the smells as much anymore

 

trust me it is your catalyic converter your 02 sensor has nothing to do with it

 

i dont even have a catalyic converter .lol

 

trust you?

I bet you didn't read the TSB either... it's NOT the cat

 

Just got TSB. Suggests to use gas for a different gas company but not gas grade-higher octane. Sunaco seems known for gas with low sulfer content.

 

WRONG! It IS the cat, the suggested change in gas is for one with some lower sulfur content... by lowering this, the amount of sulfur dioxide that is in the exhaust is lower and this means that the chemical reaction IN THE CATALYTIC CONVERTER does not produce as much sulfur trioxide (which is what causes that smell).

So, whilst it is not something wrong with the car, it IS the catalytic converter that is making the smell.

 

SULFER thats what smells like .(i remember now)

quote:
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Originally posted by JJB

WRONG! It IS the cat, the suggested change in gas is for one with some lower sulfur content... by lowering this, the amount of sulfur dioxide that is in the exhaust is lower and this means that the chemical reaction IN THE CATALYTIC CONVERTER does not produce as much sulfur trioxide (which is what causes that smell).


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but what if i dont have a cat.

 

there is still a chance that it is the sulfur in the gas that you are smelling as it does get converterted to sulfur dioxide by the fuel combustion process, but if what I have read on this topic is correct that should not have that strong a smell.

 

Where in the F!#$ Can I get those billet style grilles for my P5. I am starting to get irritated. Can anyone help?