Can anyone help with Impala 2011 rotten eggsmell?

Asked by Jul 09, 2011 at 10:37 PM about the 2011 Chevrolet Impala LT

Question type: Maintenance & Repair

I have had this car  for 7 months.  It now has 11,000 miles on it. It has had rotten egg smell from day one from exhaust.  They say it is sulfur dioxide and I should change gasoline.  I use Shell and Mobile and no other cars that use that gas exhibits the problem.  They changed the catalytic converter and I still get the smell.  Please, does anyone have an idea of the cause and a possible solution?

9 Answers

6,615

find out ..is the engine temp about righ?. ..if ok is the engine getting too much fuel to the intake?

I suppose it is good, the dealer checked everything. The temperature gauge is reading normal. There are no service engine lights on. They just keep telling me it's the fuel.

15

the roten egg smell is desinetly sulfur....My guess would be to use 91 of a high quality gasoline. ie. shell ,chevron, 76, for at least the next 4 to 5 tank fulls and hopefully the smell will go away once you have completely replaced all the old gasoline wiht the new higher quality stuff. i had to do this to my 07 impala LT because my check engine light would come on after i had driven 55 mph for longer than 1 hour 1/2 straight(3 hour trip to pick up my son.) trying to hyper mile it, got great mileage! It finally worked, but i was using a inferior gasonine. So if they say its the gasonline then that would be my best guess. It worked for me, might work for you

1 out of 1 people think this is helpful.
25

try upgrading your fuel to a higher octane i use 94 octane in my 2006 impala ss

575

the smell can be caused by long idle time.. or keeping your foot glued like lead to the floor.. anyway the smell is from the gas, buy gas some where else, the smell should go away with time and milage

all replys make good since,but best way to answer your question,is this crappy gas we have today,it messes with your cat converter.would be a good idea to have it checked,even with 11,000 miles,it could be clogging up causeing the smell.the ethonol even 10% in the gas as they claim is not good for the fuel system,I would recomend at least every 5th fill up putting in a brand name fuel injector cleaner in it,the gas tank.will keep your fuel system clean.

1 out of 1 people think this is helpful.
25

the smell could be your battery going up

2 out of 2 people think this is helpful.

say what.

1 out of 1 people think this is helpful.

i have the same problem. 2010 impala. No codes. Tried 5 different fuels.

Your Answer

Add photo
Impala

Looking for a Used Impala in your area?

CarGurus has 35,274 nationwide Impala listings starting at $1,700.

ZIP:

Search Chevrolet Impala Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Chevrolet Impala Experts

#1 Danny Wang
Danny Wang
Reputation 1,620
#2 Js08016
Js08016
Reputation 1,550
#3 Tom Demyan
Tom Demyan
Reputation 1,410
View All

Related Models For Sale

Used Chevrolet Malibu
1,129 Great Deals out of 82,876 listings starting at $2,328
Used Dodge Charger
466 Great Deals out of 30,107 listings starting at $2,275
Used Chevrolet Camaro
400 Great Deals out of 40,630 listings starting at $3,500
Used Honda Accord
995 Great Deals out of 75,205 listings starting at $899
Used Chrysler 300
467 Great Deals out of 22,680 listings starting at $1,000
Used Nissan Maxima
381 Great Deals out of 24,382 listings starting at $999
Used Nissan Altima
1,073 Great Deals out of 82,589 listings starting at $1,988
Used Buick LaCrosse
312 Great Deals out of 22,714 listings starting at $2,095
Used Dodge Challenger
334 Great Deals out of 25,059 listings starting at $7,988
Used Ford Mustang
533 Great Deals out of 42,736 listings starting at $1,699
Used Chevrolet Tahoe
816 Great Deals out of 27,814 listings starting at $1,700
Used Toyota Camry
1,160 Great Deals out of 97,099 listings starting at $1,250
Used Ford Fusion
1,032 Great Deals out of 76,295 listings starting at $999
Used Chevrolet Silverado 1500
2,510 Great Deals out of 152,121 listings starting at $1,500
Used Ford Taurus
311 Great Deals out of 21,035 listings starting at $1,800

Used Cars For Sale

2017 Chevrolet Impala LT For Sale
3,336 listings starting at $21,799
2016 Chevrolet Impala LT For Sale
38 Great Deals out of 1,429 listings starting at $14,887
2015 Chevrolet Impala LT For Sale
18 Great Deals out of 592 listings starting at $14,404
2014 Chevrolet Impala LT For Sale
17 Great Deals out of 529 listings starting at $11,995
2013 Chevrolet Impala LT For Sale
3 Great Deals out of 122 listings starting at $5,995