downshifting too much using cruise control
I have a 2000 ranger xlt 3.0L 4x4 4 speed auto, about 170,000 miles
recently when climbing hills going 70-75 using cruise control on highway, it will sometimes downshift all the way down to 2nd putting the RPM's up at 4500-5000. i've only been getting around 15 mpg since dealing with this issue.
head gasket was replaced less than a year ago, and i've never had this problem until about a month ago after buying the truck last march.
anybody know any reasons why this could be happening, or is this pretty normal?? any help or insight i could get would be appreciated