Originally Posted by jr's3800
Yeah you might be due for an O2... I get better milage than that with my foot in it... I've been doing about 18 mpg, but the last tank was 20mpg... Your car is fine for now... But after 40,000 to 50,000 miles I do reccomend a new sensor... While you are at it if you havent replaced the air filter do so... Also your injectors may be a wee bit on the dirty side, try a bottle of fuel system treatment like Slick 50 fuel system treatment or duralube fuel system treatment... I have been using the durs lube stuff for 7 years.... So far so good... It might make a sligh diffrence... Other than that the basics... Plugs, wires and what not....
BTW i have lost about 1-2 mpg without the MAF screen, but I did gain some noticeable power out of it... But I'll problably reinstall the screen to see if my lost mpg'* come back..
this is about the third of fourth tank without the screen, all of the previous tanks have been right around 18. last tank was 17.8 and that was with probally a good 5-6 minutes of WOT throughout the tank, this last tank was *****-footed and it came to 16.71 so i'm thinking something is wrong. 55k miles so i'm gonna order an O2 sensor as soon as someone confirms the part number: 25312184