Compression Ignition Addict
Join Date: Jul 2010
Location: Falls Chruch
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OMG! 911!!! EMERGENCY!!! Nodd has crappy gas mileage.
35" tires are throwing your odometer off. You are actually traveling further than 1 mile for each mile shown. This also means your speed is off and so is your mpg. Need to do your MPGs by hand
Also keep in mind that you will still have an adverse effect from larger tires even after compensating for the extra diameter. I lost 2-3 mpg from bumping up to 33" on 10.5" rims after adjusting the speedo.
Figure out your true MPGs and then hit the search button. There are loads of threads on the various causes of low MPGs. Read up on them and create a check list. tackle each the best you can
Nonconformist. Functionality over bling.
My three rules for 7.3l troubleshooting: 1) Replace CPS and keep a spare. 2) Replace FPR and know your fuel pressure. 3) Hook it to a scanner and check for codes.