Question about 1999 GMC Yukon

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Rotten egg smell inside. After it hesitates on acceleration

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6ya6ya
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Posted on Jan 02, 2017

  • 2039 Answers

SOURCE: 1984 jimmy 4x4

alternator is defective regulatorbroken you have to change the alternator good luck pierre

Posted on Sep 16, 2008

ginko
  • 19396 Answers

SOURCE: engine light stays on

That is sulfur smell.

Sulfur smell it is not necessarily indication of problems if not accompained by an eccessive fuel consumption.

See here some additional indications:

Feel, Hear, See, Smell: Smell

My car's exhaust

Auto Diagnosis

Posted on Jan 12, 2009

  • 4977 Answers

SOURCE: when at idle shaking and

the rotten egg smell indicates the truck is running very rich which will cause it to shake at idle.you need to have it put on a scan tool to see what the readings which will help to diagnose faster.you could have too much fuel supply because of an injector problem a plug not firing,plug wire,problem with the pcm,too much fuel pressure in the system a sensor sending the wrong information to the pcm.

Posted on May 05, 2011

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1 Answer

2008 Kia Rio poor acceleration and rotten egg smell. Changed air filter and spark plugs with Busch platinum plugs.


rotten egg smell is attributed to unburned fuel reaching the catalytic converter. There may be an exhaust leak or intake manifold leak that is telling computer to add more fuel then car is capable of burning in cylinders or you could have a to cold of spark plugs hope this helps you solve your problem

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Hesitating


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What are the symptoms of a bad caytlitic convertor


hesitation on acceleration misfiring, the engine idle is erratic and the cat gets cherry color,and at the back of the exhaust the emissions smell like a rotten eggs,always the idle is not steady .

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The rotten egg smell if it is coming from the exhaust is a very good sign that you catalytic converter has failed or is failing. but a bad or battery that is being overcharged can also make a rotten egg like smell.

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Engine hesitation


sounds like unburned fuel in the catylistic converter suddenly burning the fuel as your car picks up speed [causes the rotten egg smell] your hesitation sounds likley to be [tps sensor] throttle position sensor its a variable resistor which is known to breakdown not a difficult repair and can be tested on a multi meter with a bar graph on it yates210456

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