Tmacfred

The sensor on my 4.6 L V-8 showed that I needed to re-program factory settings when I had recent oil change. They could not do this as only Ford can reset the chip. I took it to Ford dealer where they downloaded the latest settings for my 2005 F-150. Now the gas mileage is terrible. Where I used to get overall average of 16 now I'm getting 12. Any suggestions?
Thanks

Ricktwuhk

Have you gone to larger tires, reset the size with a tuner, and then Ford put everything back to factory?

techrep

iTrader: (1)

What sensor ? what chip did Ford re-set ?? have you completed a drive cycle yet ?

Tmacfred

The message light was on "check engine". I had changed spark plugs but no tire change etc. The shop where I change oil could reset the light but it wouldn't stay off. Their computer said I needed to have Ford reset the computer in my Truck. Hope this is clearer. After dealer reset my computer with his computer, my gas mileage stinks.

techrep

iTrader: (1)

What was the code for the check engine light ? Did they fix anything or just reset the light ?
You still out in left field... the oil change place has a computer that told you to go to ford ?