Replace O2 sensor

ariesdude · Post by **ariesdude** » November 4th, 2005, 12:14 am

Today i replaced the O2 sensor for my 94 DOHC 4 cyl - i recommend replacing this for anyone buying an used mx-3 with more than 60k miles. The one in there was stock and was in a sorry state. It was totally crusted with black stuff and out of all the small holes only 3 were open - everything else was blocked! After replacement - I feel some improvement in power and its too soon to see any mpg improvemnts. It seems our ECU will put out the O2 sensor code only if it is disconnected. Most modern cars put out O2 sensor code if they think the sensor is going bad.

anjin1982 · Post by **anjin1982** » November 4th, 2005, 9:24 am

Yea mine recently flooded and some people mentioned it would be a good idea to change mine,my gas mileage is shot right now.Im plannning on doing it when i get around to it cause i got a company van to i barely drive my mx now...