golddestiny357

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

golddestiny357

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

MTBSully

iTrader: (7)

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

RARON455

iTrader: (35)

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

golddestiny357

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

02TtopWS6

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

sleepy_z

iTrader: (8)

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