bil.dun Posted March 26, 2022 Report Share Posted March 26, 2022 Hi, I posted this previously, but perhaps in the wrong forum....I own a 1990 Deville, 51k miles, great condition. Can you guys tell me, is it a difficult job to replace the o2 sensor in these? The tranny seems to not want to shift into overdrive, either, although previously it was operating normally. These two problems seem to provide me with terrible gas mileage, the exhaust smells "rich", but it idles smooth. Any suggestions? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.