my truck is an 02 ranger 3.0 4x2 ext cab it has 90,000 miles on it. the problem im having is when im driving down the highway at 70mph every once in awhile it seems like the torque converter unlocks and then in about 5-10 seconds it will lock back up and drive fine. the o/d light doesnt blink and no cel. i drive 60 miles to work and back and it does it on an average of 4-5 times a day. im starting to think it may be a lockup solenoid or torqe converter problem. if yall have any sugestions i would appreciate it, thanks.....