No warning lights, sulfur like smell - Toyota FJ Cruiser Forum
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post #1 of 10 (permalink) Old 10-13-2014, 02:22 PM Thread Starter
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No warning lights, sulfur like smell

I've seen many threads on the cats going bad but it always seems to be accompanied by an array of warning lights on the dash. I do not have any warning lights on, but under medium and harder acceleration I get a brief sulfur like smell. Could the cats be bad/going bad without any warning lights or could this be something else?

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post #2 of 10 (permalink) Old 10-14-2014, 06:42 AM
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Re: No warning lights, sulfur like smell

Sulfur smell is common with catalytic converters. It is a biproduct of normal operation considering the sulfur levels in our fuels. The lower the sulfur content- the less the smell. A sulfur smell can be detected on a brand new vehicle with 500 miles on it. It is NOT by itself an indication of improper catalyst operation or faulty parts. This is the reason the check engine light has not come on. According to your ECM- your vehicle is not exhibiting a catalytic converter operating below its efficiency threshold.
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post #3 of 10 (permalink) Old 10-14-2014, 07:03 AM
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Re: No warning lights, sulfur like smell

Windows up or down? Probably normal. If they are up, probably an exhaust leak.

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post #4 of 10 (permalink) Old 10-14-2014, 09:58 AM Thread Starter
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Re: No warning lights, sulfur like smell

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iwashmycar previously said: View Post
Windows up or down? Probably normal. If they are up, probably an exhaust leak.
Windows up. It happens if I accelerate harder than normal driving, or even if I compensate for going up a hill. It started within the last two weeks. I never noticed it before that.

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post #5 of 10 (permalink) Old 06-24-2016, 06:06 PM
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Re: No warning lights, sulfur like smell

I have the same issue...a smell when we give her the throttle.... maybe the cats
I am looking for an aftermarket exhaust

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post #6 of 10 (permalink) Old 06-24-2016, 08:12 PM
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Re: No warning lights, sulfur like smell

Did you change gas stations
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post #7 of 10 (permalink) Old 06-24-2016, 09:15 PM
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Re: No warning lights, sulfur like smell

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Did you change gas stations
Yes... my wife and daughter have been driving the FJ and i am betting that they have not been using Premium gas...
So i think I will keep the GOOD GOOD GO JUICE in there for the next three full tanks..
.plus i was thinking about adding some fuel injection cleaner.

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post #8 of 10 (permalink) Old 06-28-2016, 05:08 PM
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Re: No warning lights, sulfur like smell

Yeah, I'm using a non-ethanol premium and every once in awhile I get that sulfur smell, especially after a hard hill climb. I'd like to change my fuel source to try and get rid of it, but there aren't a lot of places here that sell non-ethanol fuels, so I'm stuck with the smell.

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post #9 of 10 (permalink) Old 07-03-2016, 08:42 AM
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Re: No warning lights, sulfur like smell

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Yeah, I'm using a non-ethanol premium and every once in awhile I get that sulfur smell, especially after a hard hill climb. I'd like to change my fuel source to try and get rid of it, but there aren't a lot of places here that sell non-ethanol fuels, so I'm stuck with the smell.
How has the FJ acted since the non-ethanol fuel?

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post #10 of 10 (permalink) Old 07-06-2016, 04:16 PM
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Re: No warning lights, sulfur like smell

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How has the FJ acted since the non-ethanol fuel?
Sorry for the late reply, outside work's been calling and the weather here has been fantastic. You know, I haven't compared the performance differences between the E-10 and non-ethanol fuels on my FJ. I only had the ethanol stuff in my tank from the dealer and once that was gone, I went to the non-ethanol fuel since 2 of my local stations carry it. It did make a world of difference in my old 1988 Wrangler though. I got a little better fuel mileage and I didn't have the vapor lock issues with the carburetor it had using E-10 fuel and I had fewer problems with those older fuel system components that typically were attacked by ethanol. Once I started using it on all my vehicles, I never went back. Even my old PT Cruiser got a little better mileage on the non-ethanol stuff, but probably not enough to make up the cost difference between the 2 fuels because the 2 gas dealers here only sell the more expensive premium non-ethanol fuel. I'm going to try the other station's fuel source though. I came home today in my FJ and that nasty sulfur smell permeated my garage. It all depends on which refiner they source the fuel from. Sometimes it's OK, other times it's got a higher sulfur content and it stinks when burned and run through a catalytic converter. Now, if the government would mandate a lower sulfur content in all U.S. fuels instead of forcing ethanol-laced fuels on all of us, our over farmed middle American soils, our cars and our noses would all be happier.

I've stuck with the non-ethanol fuel for everything, especially since it destroyed my grass trimmer's fuel system and since that trimmer was older, no replacement parts could be found. The stuff pretty much deformed and expanded the fuel tank so that the cap would no longer fit and it started leaking. It did a number on the little carburetor parts too. It kind of sours me to give the gas companies and corn farmers my of my hard earned money for the privilege of using their water absorbing component destroying fuels when it ruined a perfectly good and expensive tool. I know that modern cars are supposed to have fuel system components resistant to ethanol, but hey, now it's principle. Plus, the E-10 loves to pick up any water in the station's tanks, so there's that problem to deal with.

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