juststickit124

Hey guys, I've searched and found a couple answers to this problem. A rotten egg smell could either mean a bad cat, camshaft sensor, or some other kind of sensor. The car smells usually when i start it up in the morning.
The other threads however didn't mention anything about a CEL so no codes where checked. My other thread I started stated that I punched it around a corner, the car cut gas and died, and a rotten egg smell and CEL appeared. I don't have the CEL anymore but could the dealer check the history of CEL's??? That should narrow down where the problem is shouldn't it? Need advice please.

MadFish

normally, its a bad cat. Which once a lot of fuel gets in there and sits, its bad anyway. But, sometimes times dealers can get the codes. But, in reality once the light is gone, so is the code. There are a few times when the code will turn the light on and then the light goes off and the code is still there. But, not always.

Just take it in and have them check it out. Its not a uncommon problem to have.

mike25

no once the light goes off the codes are gone...that is what the ser. tech.at the dealership told me..so itd have to be doin it when you take it to them

juststickit124

Think I'll get any **** for my CAI?

blkcobalt

No that is not true. The computer will store a code for awhile, not sure how long. I took my Cobalt in for some warranty work....they pulled three codes that the computer had stored previously.

The rotten egg smell is most likely a clogged converter.

MadFish

it will store the codes for a little while. I think maybe 3 or 4 trips. Which one trip is turning the key on and off. After that it clears all codes that arent turning the light one. But, im not 100% sure on that. I know thats how it works on Saabs though

Its a lot better to take it in with the light on. If its a intermitten problem go stright to the dealer when the light is on and dont shut the car off once you get there.

wolfie

The computer will hold the code for 40 cycles I believe so you should get it to the dealer so they can retrieve the code.

juststickit124

it's been 6 days, I have no idea how many cycles i've been through lol. Oh well if they can they can, if they can't, then they buy me a new cat anyways!!

l Sh1ft l

I think I smelt it on my car for like 1 second today. I was pretty sure I didn't let one so I'm almost positive it came from the car. No CEL and the smell lasted for literally like 1 second.

05_Blue_B10WN_SS

My car has had a weird ordor since i installed my magnaflow catback... But i only have about 200 miles on the system... so is that usual?

Matty

I had that egg smell a few times in my car. Then I changed my diet.


Seriously though, a guess would be a bad cat. No matter what it is...it should be taken in and looked at. Will be warranty work.

Your CAI shouldn't be a problem unless you have ********* working at your dealership. If so ask around to find a better one.

juststickit124

would the car perform differently, cause it feels almost the same, atleast i can't notice anything but then I haven't punched it since cause gas is so expensive.

Matty

Usually if a cat is clogged or shot, you should notice a difference in performance.

Matty

Probably just the coating burning off. All the new exhaust systems I have ever had did it to one degree or another.

jokieman

also new cats sometimes emit a very harsh smell when the car has been driven hard. I had that happen on my corolla once. After I hit 1k, I took it out and really beat on it for few hours. when I got home it had a stink to it. hehe

l Sh1ft l

Normal. I had the same thing for awhile then it went away..

grigs

i first started to notice the smell about a week ago and now my caar is stalling, losing power studdering, and when i take it to the dealer they tell me to bring it back in a week....great service

CdnCobaltWrencher2

your a/c evaporator core is leaking

Coblasts

The smell on start up is the raw unburnt gas getting into your cat.
You will smell it going up a hill freqyently when behind another car when the guy is accelerating up the hill.
I would bet your car is stalling because it is flooding and if so your cat is screwed
because the raw gas in the cat causes it to melt the core into a blob.
But I copuld be wrong.