I just re-read your post and I now see that you have done all I suggested. Sorry about that. It sounds like it may just be the elevation. Mike


2001 Toyota Tacoma 4x4 SR5 auto trans, ext cab,16" Good Year Tracker tires and 2.7 4 cyl. Love it!!
Mobil 1 5w30. Valvoline 75-90 syn in front and back differential ."Keep the shiny side up and your trash out of my woods!"