chris B Posted December 24, 2008 Report Share Posted December 24, 2008 (edited) I was looking at mine today 11.3 90% city miles but i am running snow tires so that is probably hurting me a little. Edited December 24, 2008 by 1stimeSSguy (see edit history) Quote Link to comment Share on other sites More sharing options...
8hnpSS Posted December 24, 2008 Report Share Posted December 24, 2008 Many factors can effect gas mileage, tire pressure, idle time, driving style(i.e. heavy foot), weather, etc. A dirty air/fuel filter, worn spark plugs/wires, plus a dirty MAF and TB can also contribute. This time of year, most gasoline has a 10% ethanol mix which can account for a loss in MPG too...... Wow I guess I got the heavy foot pretty bad. I average 11.9 in mostly city driving. Quote Link to comment Share on other sites More sharing options...
black00chev Posted December 24, 2008 Report Share Posted December 24, 2008 Before 93 and 20's i was gettin 17-18mpg on 87 and 18's... Now its 14-15.5. You would think with 93 it wouldve gotten better. I dont feel that i drive differently lol. Quote Link to comment Share on other sites More sharing options...
jlane_87 Posted December 30, 2008 Report Share Posted December 30, 2008 As was said, weather, gas mixture and of course driving habits are big but I had the same problem, all of a suddden I was getting like 4 mpg worse than usual no matter how I drove. So first I took off my washable K&N air filter and cleaned it, cleaned out the intake tube, throttle body, and MAF sensor with quick dry contact cleaner. If any of those things are too dirty it can definately affect mileage. But after doing those things I still didnt see a difference. Started the truck and crawled all under it to make sure there were no exaust clogging issues or anything. So I took the truck to a diagnostic center. They pulled the spark plugs and checked them, checked the wires, ran diagnostics on the fuel curves and all that good stuff and said everything looked good. What a waste of over $100. So I asked them if there was anything else that could possibly be giving me bad mileage if everything else looked good. They said to make sure I was running 5W30 oil and not 10W30 because that could make a difference and to make sure there wasn't too much oil in there either. Wasn't any of those things so they said they could pull fuel filter and check it out. So they did and said it looked like it had never been changed since the truck was new. Now I've only had the truck for about a year, but it was all the way up to about 85,000 miles which can be a long ways on the same filter. So they changed it and my mileage went back up to where it was supposed to be. So if you have tried most of the basic things, change the fuel filter if you haven't done it in a while. The shop told me to do mine once a year to keep it clean. This is easy to do if you have an '03 but a little more difficult on newer ones I think. Quote Link to comment Share on other sites More sharing options...
mean05 Posted December 30, 2008 Report Share Posted December 30, 2008 damn i dont feel so bad about mine...city with a little highway i am at 11.9 babying the hell out of it Quote Link to comment Share on other sites More sharing options...
Tzer Posted December 31, 2008 Report Share Posted December 31, 2008 Honestily I don't even have the DIC on. When I need gas I fill er up. If I was concerned about MPG's I wouldn't own an SSS. Quote Link to comment Share on other sites More sharing options...
mcmahan Posted December 31, 2008 Report Share Posted December 31, 2008 highway trips I can get 450 a tank. in city maybe 350. Its all in how you drive the gas. mine is the same. me and the wife drove from seattle to nashville for christmas. 15.3 was what mine read the whole way. 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.