Contour Enthusiasts Group Archives Forums Modifications Duratec Maintenance rotten egg smell

have you tried brushing your teeth? Or just breathing through you're nose with you mouth closed? It might just be your upper lip.

So how much do these o2 sensors cost, cause my girlfriend blames every smell that comes into my car as its my car. and its starting to piss me off.

i dunno if its a o2 sensor. you just running rich. and fuel hits the cats and gets converted to that smell.

you should get it checked on obd2. if its a 96+

to see if its a o2 sensor. its not worth paying 55 dollars for the bottom ones. and 65 for the upstream. i believe auto zone gives free scans. and their almost everywhere.

sounds like a cat problem

first time i ran my zetec to a high speed cough:limiter:cough b4 my chip it had a horrible sulfur smell. but it's never done it since. it normally is a cat. problem but maybe if you run your's up to a high speed, on a track of course, then maybe it won't do it again. but that's a BIG maybe.

I get this all the time. But my freinds are pretty cool about it, well at least they don't give me sh!t about it. Maybe you should tell anyone to stfu about it. OR check the cats to see if they are cloged. How about gutting the cats, if that an option?

It all depends, the type of gas may have something to do with it, but not really, I tried both regular and super and both did the same. I get no CEL's and it happens most when it is hot and you rev the car high. This means that your car is running rich and unburnt fuel is being sent into the Cat causing the foul smell as stated above. This can be caused by a lazy O2 especially if no CEL is visible. You can test O2's using a voltmeter I believe. The O2 should switch from .1-.9 volts or so (Do not quote me on it) quickly to operate properly. If it switched slowly, it is a lazy/dying O2 and if does not switch, it is dead (the CEL would warn you about the dead O2)

Before chaising your tail on too many things, try other brands of fuel.

Sulpher smell ultimately comes from excess sulpher in the fuel. Sulpher content can vary greatly depending on the refining process and the origin of the crude oil. Here in California the sulpher content is much more highly regulated than in the rest of the country and sulpher odor from exhaust is mostly just a bad memory.

Sulpher smell is agrivated by anything that put excess fuel into the cats. Running rich, ignition misfire are examples.

Rich running cats can ultimately result in damaged cats.

What if you are getting a PO430 code?