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Recently i have been getting a really bad burning smell when i pass cars and get around 80mph, kinda sulfury but not sure

does anyone know what could be causing this???

 
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nobody huh, thought all these great honda peeps would know

 
Rep Power: 811

Is your car new? Alot of stuff burns off during the first few thousand miles. If not, maybe some fluids spilt in the engine bay and you're just burning them off when the car gets hot.

 
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i just hit 31500 on my car, i cant think of when i spilt anything but maybe thats what it is

its been happening for about a month or less now and i notice it around 5000 rpms

 
Rep Power: 342

I have the same problem. I only have 8078 miles on my car....ever since 0 miles to 8078 miles i have this funny smell when i get into high rpms. Smells like a nasty fart mixed with some like sulfur....does anyone have this problem also...it bugs the hell out of me... i just blame it on my girl

 
Rep Power: 0

Have you checked what's underneath your car? Maybe you've got a plastic bag caught up between the Cat.

 
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Check out this Q and A off of another site :

http://www.2carpros.com/topics/smells.htm
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Question: 2000 Chevrolet/ Impala 3800 mileage: 16273 Kilo. Dear Bob & Ken: There is a rotten egg/sulfur gas smell every time I start up my 2000 Impala. You can actually see a haze in the air after the car is started and it takes about 20 minutes to get the smell out of the garage with the door open. It is a very potent odor. If the re-circulation vent is on outside air, you can actually smell this gas odor inside the car for about 10 minutes after running it. Can you tell me what the problem might be and what to look for? I have had new plugs installed in November, and the gas mileage is still excellent. Could it be the catalytic converter, exhaust or what? Any help and information on this matter would be greatly appreciated. Thank you.

Answer: A faulty fuel pressure regulator may be your problem. This regulator leaks fuel into the engine when it is off which causes an over rich condition when the engine is started. This is the cause of the rotten egg smell.
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Check out this site too:

http://www.aaasouth.com/acs_news/7738.asp
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Smells also are a strong clue to something amiss. An odor like burned toast could signal an electrical problem. Have it checked immediately. A rotten egg or burning sulfur smell usually indicates a catalytic converter or emission control system problem.
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Rep Power: 811

Come to think of it, my old 87 Jetta used to smell like that when the cat was going bad.

 
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Catalac converter problem?

 
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so would u recommend replacin it or going for a whole header hiflo cat deal

 
Rep Power: 304

yeah, dont be replacing good parts, thats just retarded, and it isnt cheap to buy a new cat. make sure you know your problem before you go and do anything.

 
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Yeah, make sure there's something actually wrong first before you go about changing your cat... ^^^ like he said, those things are mega expensive.