Generation III Internal Engine 1997-2006 LS1 | LS6

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Old

Mar 17, 2011 | 12:09 AM

#1

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black smoke

my cat throws black smoke when i start it up and it suck gas like crazy.. the check engine light is turning on and its giving out the o2 codes.. i bought them and had the engine tune 4 yrs ago and never had an issue till now..can it be the o2 sencors went bad or it needs tuning.. pls help

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Mar 17, 2011 | 12:10 AM

#2

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corry i meant CAR throwsd black smoke..ITS a 98 trans am

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Mar 17, 2011 | 10:42 AM

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sounds like its running fat. i would replace the o2s if that is the code its throwing

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Mar 17, 2011 | 01:05 PM

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Yup, definately sounds rich,,,replace the O2s and then the problem should Go away.

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Mar 17, 2011 | 09:51 PM

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ok thanx guys.. im going to replace the o2s to see ho it goes.. if the plroblem persists do u think is the tuning? it hasd been tune before

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Mar 18, 2011 | 01:08 AM

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as already stated seems to be running rich i would recomend changing the o2's.

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Mar 18, 2011 | 01:39 AM

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If the check engine light doesn't go away after replacing the o2 sensors, use a scanner to clear the codes.

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98, black, car, gas, ls1, ls1tech, push, rich, running, smoke, throwing, throws, trans

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