wen ever i gun it on the highway... a nasty ayss like smell comes throo the vents and window.... smells like a nasty a$$ fart... wat cood it possibly be?

 

Catalytic converter.

 

gosh darnnet! oh well i gess its time for a new cat with a catback exhaust system... merry christmas maxi

 

or.....

 

.......

 

that smell means your cat is working, not dead.

 

Kabir does it smell musty or like rotten eggs? A musty smell indicates mold/bacteria in the HVAC. Rotten egg smell points to a bad cat usually but try changing the brand of gasoline you use before making any decisions.

 

maybe you ran over a big piece of roadkill. also if it was just temporary it could be that there is a dead skunk around where you drove by or the smell of rotting trees.

 

its everytime i floor it... i been recently buyin plus 90 oct... hmm i'll try switching it off wen it empties

 

I dont know if this will help, but i usually get that smell when ever i fill up with exxon regular, thats the only brand that makes my car smell.

 

and why exactly are you doing that? filling up with Exxon regular(87), our cars need at least 91 and I am pretty sure you know that

 

91 only in our cars!

 

because you only get that smell when your flooring it it means that you CAT IS DOING ITS JOB. It is eliminating one of the by-products of combustion and it creates this smell. Once your because accustomed to you "flooring" it or enough residue builds up inside the cat the smell will happen less and less and be less smelly until it will ultimately go away.

When i got my car from my step father he never floored it or anything. When i got the car and began pushing it same thing happened...but it goes away.

 

Yep. If I don't floor my car for 3 days or so and never go above 3K RPM, and then I floor it, it stiiiiinks. If it happens ALL the time, then your cat is fried. If only once every blue moon, then it's fine.

 

I have the "musty smell" from time to time in my 03 and I also had it in my altima but figured it was from the rusted out floor boards in that ride. Any ideas on how to get rid of it?

 

Autozone sells a product that you spray diractly into your vents to kill the mold - Im sure other auto stores sell it as well.

 

hmmm i have to try these things out im waitin till my gas tank goes EEEEEEE!!!!! lol and change to super... freakin gas prices now a days

 

hmmm i have to try these things out im waitin till my gas tank goes EEEEEEE!!!!! lol and change to super... freakin gas prices now a days

 

to what everyone has said.

I don't know how high the price of gas in NJ is, but I'm glad to be in NC with $2.19 a gallon of premium.

 

for a month or so i changed to regular to save some dough. the car pinged so bad, i went back to super, real fast. rather pay some more money than have pinging.

 

Same thing happend to me. My O2 sensor died on my catalyic converter, so i went and bought new one and installed it. I put the regular gas in, and w/e i floor the car, or if i go over 3000 rpm, it starts to smell really bad. First of all i thought, it was my e-break, but than i figured out that it wasnt, than i thought that it was some gas coming from A/C but it wasnt. And it still does that, do you guys have any idea what should i do. And yea, my maxima is really bad on gas for some reasons, i had wider tires and bigger rims during summer, but now during winter i've put my old stock 2000 maxima rims on, and it still is bad on gas. I can barely go 250 miles per gas tank, on h-way i can go 400, but in city i am really bad. Is it cause' of my catalyic converter, or is it something else. And i changed my sparkplugs too, like 1k miles ago.
SO PLEASE HELP ME
THANKS

SHIFT_confidence

 

check the MAF, i had the same problem on my 00

 

OK I'm probably the most serious one here, 2 things happened that made my car smell NASTY:

1) My dad screwed up my MAF, running rich so smelled like gasoline.

2) Driving on my local roads, there are LOTS of SKUNKS out here so you smell them through the vents. When it's winter and it's cold, you turn on your HEATERS. But then you smell HOT SKUNK. It really does smell like rotten eggs, but I'm not too sensitive to it. Nor-Cal... Skunks, who ever knew?