Do you have a tune on the car?

could be your catalytic converters going bad as well they put out a harsh smell under load when they get ready to kick the bucket

Or it could be as simple as a lot of carbon buildup on the valves and intake.

+1 on the cats going bad. That's usually the first sign.

I have no tune on car and run 87 octane Chevron gas,I was using 93 for the first few months.What can I do to clean the valves injector cleaner?And the car only has 50k miles on it doubt the cats are bad.

stlwagon said:

Or it could be as simple as a lot of carbon buildup on the valves and intake.

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A bottle of Techron or Seafoam in the tank.

bmw2stang said:

I have no tune on car and run 87 octane Chevron gas,I was using 93 for the first few months.What can I do to clean the valves injector cleaner?And the car only has 50k miles on it doubt the cats are bad.

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clutch smell maybee????

That may be it.It usually happens after driving it pretty hard.

Silverstang07 said:

clutch smell maybee????

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A burnt clutch will usually smell like burnt hair, not sulphur. Bad cats are usually what causes a sulphur smell...almost like rotten eggs. But it's probably not cats with only 50k on the clock . I'd run a bottle of the piss yellow gum-out in the tank before doing anything. Then I'd go after the EGR valve.

brake rotors smell like sulfur when your have to slow down from 100 or so, or even 70 to 30 and the smell can last for a bit

Hmmm, just about every car I have owned has had the odor if I run it ragged. It's usually worse if I have babied it too much...then run jump on it. I thought this was pretty normal.

i still say a clutch............it makes perfect sense, you run the car hard, and then there is a smell......it probly is not a major concern, since a little clutch smell is normal after driving hard, launching the car hard, etc..........i know i smell mine after most runs on the strip, not too much, but a tad bit when i get down at the far end of the track. a clutch smell does not smell to good if you have ever smelled a really burt one. JMO

I agree cats. why are you using injector cleaner every month and 93 with stock tune? That could be it right there.

i guess i wouldnt worry too much about it unless you feel something weird or check engine light gets thrown up, i guess it wouldn't hurt to ask ford to check out your cats for you or the clutch, but i wouldnt waste the money.

I'm pretty sure it's not a dire issue...every car that's run hard for a decent amount of time smells like that...it's just the cats getting hot.

When you smell this smell is it in the rain??

BullDog71ss said:

A burnt clutch will usually smell like burnt hair, not sulphur. Bad cats are usually what causes a sulphur smell...almost like rotten eggs. But it's probably not cats with only 50k on the clock . I'd run a bottle of the piss yellow gum-out in the tank before doing anything. Then I'd go after the EGR valve.

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xchris said:

brake rotors smell like sulfur when your have to slow down from 100 or so, or even 70 to 30 and the smell can last for a bit

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Very true, ive had to slow down hard like that one time.. wont go into detail, but it reaked for a good 50 minutes after..