Program won't stay programmed

[Jackpine]

Originally Posted by BlackSTX

Another thought....

Are you going back into custom program, and not loading the previous settings first?
I noticed if you do, it just gives you the default values, not what you had previously programmed in under customizing.

That was my first thought too, but I believe he said he tried loading the "Previous Settings". I DO note that he says he "tried" this, which doesn't sound like it's the FIRST thing he ALWAYS does after opening the Custom Optons menu.

But then, if he's never created a valid "custom options file" by going to "Done" and hitting <Enter>, he wouldn't have anything to load.

Mexico Dan, do you see what we're saying here?

- Jack

[Mexico Dan]

Aha, I think that was my problem. So was I actually driving with the new options and didn't know it? I just hit load previous settings and checked my GR and TS, they are both where I put them. IF I was driving with them, then I still have the problem with my odometer being off by 150 feet. Bill thinks I have the wrong gear ratio on my tunes, it's 3.55, so I changed it to 3.73 and I'm still way off.

Anyway, thanks for the help. Much appreciated.

[Jackpine]

Here's a link to a post about axle codes: http://www.f150online.com/forums/3397005-post6.html

If you have not changed your gears, you should be able to find your code on the VIN sticker on the driver's door, under "Axle".

Mine is a "B6" - A limited slip 3.73 differential. What code do you read?

- Jack

[Mexico Dan]

26...so it's 3.73, good to know. Thanks for that link. Now I can figure out what non-limited slip means...

[Jackpine]

Limited slip means you get power to the wheel on an axle that is NOT slipping. With limited slip, on a 2-wheel drive vehicle, if say, you roll your left rear tire onto a patch of ice and it begins to spin, power will be delivered to the right rear wheel and that will push you off the slippery spot. If you don't have a limited slip differential, all the power simply goes to the slipping wheel and you just sit there.

The meaning is a bit more complicated if the vehicle is 4-wheel drive. You might have the ability to get power to the front if the rear is slipping or vice-versa. You also might have the ability to get power to ANY wheel that is not slipping instead of just the non-slipping axle. I honestly don't know which system we have on the f150.

So, looks like you don't want to take your truck into really slippery conditions (like an off-road mud wallow).

- Jack