Originally Posted by Bob Dillon
123K and I've never changed it. I guess I better take a look.
The SLE had 133K on it when the fuel economy suddenly dropped from 24 to 18 mpg within two tanks of gas. The subject line - "Fuel economy restored" just doesn't grab you, but would have been more accurate. Idon't know if the previous owner had ever changed it. The old one was an AC/Delco. I think it is more common for them to go bad slowly. If your mpg is still good, the O2 is probably OK. My '95 is stock except for a gutted air box. Considering that my combined mpg is 24, I'm thinkin' on a cool day with no AC, no wind, flat roads, all trip miles, and a gentle touch, I might be able to come close to 30mpg.