Some vehicles have to "see" a value of "1," (vice zero) in order to get into PE. Not really a good start for fuel economy-LOL!

For fuel economy start logging spark and watch the TC lockup. On some vehicles I have logged the slightest load increase (like a slight hill) causes the TC to unlock and blamo goes your fuel economy. I have found by increasing spark just a tad in these areas helps out.

Merry Xmas,



Doc