1998 Nissan Altima mileage: 135,999. The car emits "rotten-egg" smell from exhaust. Is it the catalytic converter or the oxygen sensor?
Tuesday, November 9th, 2010 AT 8:35 PM
The "rotten-egg" smell is caused indirectly by the catalytic converter. The main cause is a rich mixture condition from the engine. Check the catalytic converter to make sure it is not "plugged" or restricted. Your car is equipped with a computer controlled engine management system. You can scan your computer for fault or error codes with a hand held scanner. The information will pinpoint the mal functioning components.