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exhaust will burn your eyes


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My '89 has been putting out a noxious burning odor for a few months. Does this sound like a toasted cat or maybe just "O2" sensor? When stopped in traffic the odor can overwhelm. If it is the cat causing the problem is this a replacement or can they be evacuated through a drain plug? I've never looked at mine closely. Thanks for any suggestions. P.S. It seems to have affected the around town mileage drastically.

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Rotten eggs :: sulphur dioxide. This and sulphuric acid mist is not a normal engine exhaust component but <big>is</big> the result of a fuctioning catalytic converter and an over rich engine mixture.

Two most likely culprits:

- engine running open loop

- faulty (but not failed) 02 sensor.

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