Rotten egg smell

[crazycarls97gst]

Im just wondering if anyone knows, or has any idea of why when i get on it hard. I get a rotten egg smell right after im done gettin off it. I think it might be the cat but im not sure any suggestions would be good.

 

[crazycarls97gst]

ok when i step on it right after im done gettin on it i get a real bad smell of rotten eggs. now i think its the cat could it be gettin over loaded or what any suggestions to why this happens would be nice

 

[slowlaserRS]

its the cat i would think might be time to get a new one or a test pipe.

 

[roshique]

I'm pretty sure that it's the cat. converter.

 

[k3k0a]

....could be the ECU..it makes a rotten egg smell when going bad...doubt it tho...pz

 

[Dieselboy]

Catalytic Converter

 

[wicked93GS]

I've heard battery acid can boil and give a rotten egg smell too, but hes probably right, its the cat

 

[99GST]

Is your fan turned on? Is your A/C turn on? You can also get this smell when you have excess water overflow inside your condenser.

 

[Tevenor]

Did someone plant an egg in your engine somewhere?

 

[laserblue]

Rotten egg smells come from sulfur compounds [yes, that college chemistry course paid off]. An out-of-tune engine produces more stench than normal. Also the cat is probably not as efficient as it used to be, so it's letting the stink out. Other emission related gadgets on your engine may not be working correctly... such as the EGR valve. When it clogs up, the car pollutes more than it should.
.. Or maybe a family of mice died in your heater duct!
Wait for more posts since I'm not an expert in this area!!!!!!!

 

[FourG63 97GST]

sounds like its the clutch to me, are u manaul?

 

[GaRn]

doesnt the clutch usually smell like burnt ####? go on a hill and ride the clutch for about 5 seconds and youll know what im talkin about, actually dont.. bad for your clutch obviously

 

[HyperGSX]

Originally posted by Dieselboy
Catalytic Converter

Yup!

 

[crazycarls97gst]

alright thats what i thought. Now time to fix it, what do you guys think wait til i get the full exhaust, wit hi flow cat or test pipe or go ahead and just get a test pipe or hi flow cat that will mount up to the stock exhaust diameter?

 

[crazycarls97gst]

I dont have the $ right now to buy the full exhaust from downpipe back. So should i just leave it or just buy a test pipe/ hi flow cat? Im still on the stock exhaust. Help me out here guys

 

[gsxcyclone]

Just throw a test pipe on it. It's only 4 bolts and there cheap. I've seen them $35 shipped.

 

[crazycarls97gst]

now will a 2 1/2 or 3 in test pipe bolt up to my stock diameter exhaust now this might be a stupid ? but my friend is on his stock cat, and his 2 1/2 in exhaust bolted right up

 

[COspeed]

My car does this too... Mostly when I'm boosting maybe 3-5lbs going uphill, then when I let off the gas a little. It is definitely not my cat, as I just put in a full 3" with high flow cat. What else could it be?

 

[boogabee]

I was driving home from Lincoln, NE to KC, MO when I got the rotten egg smell. I pulled over at a gas station and popped the hood and my battery had blown it's top. Apparently the alternator went wacky and was overcharging the battery. The smell was the battery acid being cooked dry. I didn't get any check engine lights to tell me there was a problem and had I not been driving on the highway with my top down (Spyder) I might have noticed the smell earlier. As it was I had a fried battery and alternator and now there is battery acid stain over alot of my internal components.

I'd have someone check the alternator just to be safe.

 

[Prodigy]

FourG63 97GST is right, more then likely itz the clutch..i took my car to dealer after dealer to find out what that smell was...then one day after a small burn out..the clutch was gone...Not fun when u around 20 other car clubs..

 

[CraigB]

Some brands of fuels contain more sulfur than others. Sulfur can collect in the converter. When enginge parameters change, the sulfur that has collected can be expelled as hydrogen sulfide (smells like rotton eggs)

Switch brands of fuel and always run premium (contains less sulfur)

 

[GaRn]

if its a rotten egg smell then its DEFINITELY your catilytic converter.. ive smelled it several times on my friends car.. and after you do a burn out.. itll prolly increase the smell because your gunnin it and burnin lots more fuel... just gut your cat.. hehe

 

[marksae]

Where is the smell coming from? Inside the car from behind the stereo? Or from the outside? If the smell was coming from the cat, it would come out of the exhaust. If it was the ECU caps leaking, it would come from behind the stereo.

 

[turbotalon92]

Originally posted by GaRn
if its a rotten egg smell then its DEFINITELY your catilytic converter..

Quote above has all the answers. Live with it or replace it.

 

[marksae]

What would cause a cat to smell like rotten eggs?