my car smells like rotten eggs! - Maintenance and Repair Forum

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my car smells like rotten eggs!
Thursday, April 14, 2005 5:40 PM
my car just started makeing a really bad rotten egg smell to the point where me and my friends have to open the windows it gets bad lol. it only does it going up hills or when i get on the gas like geting onto the highways other then that its fine. i thought it was the gas i was puting in it makeing it do that i use the 87 like i should be from getty, so i tryed something difforent its still doing it, so i asked my dad why its doing that and he said bc of the stuff packed into the cat. im like that cant be normal it smells bad. do i need a new cat if so where can i get a high flow one lol.

Re: my car smells like rotten eggs!
Thursday, April 14, 2005 5:47 PM
its probaly a bad cat.
you can get a high flow one from Gravanatuning



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Re: my car smells like rotten eggs!
Thursday, April 14, 2005 5:53 PM
I second a bad cat. The one in my van went bad and i replaced it with a walker high flow and its way better now.
Re: my car smells like rotten eggs!
Thursday, April 14, 2005 5:56 PM
thanks, i new it was a bad cat. good not i have a reason to get a highflow one now lol.
Re: my car smells like rotten eggs!
Friday, April 15, 2005 6:12 AM
Yeah you know when you smell the rotten eggs either your cats bad or someone in your car has got some bad gas.


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Re: my car smells like rotten eggs!
Friday, April 15, 2005 7:58 AM
Also if your O2 sensors were bad, and they sent out way to rich of a miuxture, you car would smell like rotten eggs.

Cat. convetor dont fail on their own, something causes them to fail, I suggest you find the underlying problem, otherwise you will just be replacing your cat. again and again.

I heard this from a shop near my house by the way.






- 2004 Cavalier - 124k, owned since new



Re: my car smells like rotten eggs!
Friday, April 15, 2005 8:36 AM
It sounds like its time, for that air freshener u have, to go



MY 2003 SUNFIRE
Re: my car smells like rotten eggs!
Friday, April 15, 2005 3:23 PM
Rob S wrote:Also if your O2 sensors were bad, and they sent out way to rich of a miuxture, you car would smell like rotten eggs.

Agreed. Have your O2 sensors checked out first.




Re: my car smells like rotten eggs!
Friday, April 15, 2005 9:01 PM
the smell has not been going away and it seems that its not doing so hot on gas ill have to fill it again and set the trip on it to see how long it takes to go on E. also i have the stock muffler still and the tips of them are like black so when i washed them it came off but its back now wut is that? its not smokeing at all runs great only think that is funny is when its warming up it sounds like it wants to shut off and it dont. the RPMs where at below 1 the whole time thats where it stays all time when its just siting in the driveway runing
Re: my car smells like rotten eggs!
Sunday, April 17, 2005 2:13 PM
When the O2 sensor goes, so does your gas mileage. Your car has been running very rich, and plugged the catalytic converter as well.

Change the O2 sensor and the catalytic converter.
Re: my car smells like rotten eggs!
Sunday, April 17, 2005 3:19 PM
I've believe if you change the O2 sensor and let it run for a while, any build up on the cat converter will go away.
Had it happen on a Chrysler I used to own.
The O2 sensor was bad for a couple of months and the cat converter was only 1 1/2 years old. In Ontario Canada, we have to do emmisions testing every 2 years on cars older than 3 years. After replacing the bad O2 sensor, my cat converter was functioning properly.

Walt

Re: my car smells like rotten eggs!
Sunday, April 17, 2005 5:02 PM
One that note ... I get that smell everyonce in a while when I turn my car off. From what I was told is that it is excess gas that was not burned. Is this true or not??

dan


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Re: my car smells like rotten eggs!
Sunday, April 17, 2005 8:32 PM
im going to check the 02 sensor tomorrow thats the one that plugs into the intake right? ill get that fix on to something else lol . my theft system light is blinking now when i lock the car with the remote is that fine it never did it befor?
Re: my car smells like rotten eggs!
Monday, April 18, 2005 10:09 AM
01sunfire wrote:im going to check the 02 sensor tomorrow thats the one that plugs into the intake right?
Nope....that would be the IAT sensor. Your O2 sensors are located in the exhaust manifold and another one behind the cat.




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