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Engine suddenly started running rough and smells like sulfur of a match.

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Check exhaust and feel if restricted the smell and rough running or stalling usually is the catalytic converter is clogging or failing

Posted on Apr 24, 2017

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Posted on Jan 02, 2017

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I have a 12 tundra TRD..I just pulled in and I could smell that sulfur smell coming from my fan and the fan keeps running...after I shut the engine off..where do I start


The fan will continue to run until the coolant sensor reaches a predetermined point. The sulfur smell should be from the catalytic converter.

Jul 20, 2016 | Cars & Trucks

1 Answer

At startup engine runs rough with a white smoke out of exaust with a sulfur smell. . stops after tthe engine reaches op temp.


On a vehicle that old, especially with high mileage, the symptoms you describe are fairly typical of a failing head gasket. When head gaskets begin to fail, they will allow water to drip into one or more cylinders, which will burn off as steam when the car is first started. Check to see if you are losing any coolant, however small the amount.
If the vehicle has recently been allowed to overheat, near 100% probability that you will need to have the head gasket replaced.
If by "sulfur smell," you mean a smell of raw gasoline, the problem can also be a sticky startup injector... but less likely than the chance of a bad head gasket.

May 11, 2015 | 2001 Chevrolet Chevrolet Blazer

1 Answer

My 2002 a-6 3.0 suddenly started running rough-engine light is on and blinks at 45mph. runs doggedly


Check oil and coolant levels (at the radiator cap) first. Run fault codes to find which sensor triggered the engine light . The light is to tell you that the engine is in danger of failure so do not dismiss the light as not important.. Hot smells mean that the engine is very hot and you may not have any coolant in the system to activate the temp light or gauge.

Dec 08, 2013 | Audi A6 Cars & Trucks

1 Answer

Engine stalling


The sulfur smell is usually low grade gas or a problem with the catalytic converter.
In your case I would go for bad gas, especially if the problem just started happening recently. You can try adding premium to the tank and drive it out. You may have to replace the fuel filter once or twice if the gas has water or other contamination.

May 14, 2013 | 1998 Jeep Cherokee

1 Answer

01 alero hard start and rough idle


If the Catalytic converter is bad the engine will over heat while driving.

May 28, 2012 | 2001 Oldsmobile Alero

1 Answer

Engine jerks, then smooths out, runs rough, misses, smells like sulfur, loss of power


sounds like a restricted catalytic converter. you must, however find out why it got restricted, or it will happen again, from the sulphur smell, i suspect engine is running rich. you need a pro to help you with this problem.

Dec 22, 2010 | Ford Expedition Cars & Trucks

3 Answers

Runs rough,smells like not burning all the fuel/misfire


have vehicle scanned for the trouble code some thing is going and the code will give u ur starting point most auto stores will scan for free such as auto zone / advanced auto --if it smells like rotten eggs or like sulfur most likely catalytic converter going

Jan 16, 2010 | 2000 Saturn L-Series

1 Answer

Car all of a sudden started running rough and smell of burning


No i have grand am gt no problems sounds it may have a internal problem

May 30, 2009 | 2001 Pontiac Grand Am SE

1 Answer

2000 Focus Zetec-rough idle, very rough under load.


you haven't said if its petrol or diesel so i'm assuming its petrol since your smelling sulfur sounds if you have a misfire causes could be plugs,leads or ign coil i suspect its ign coil these are common to go.

Mar 25, 2009 | 2000 Ford Focus

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