In your guys opinions what should I do? I have 1999 explorer sport with a 5r55e trans in it with 186000 ive owned it since 92000 and under normal driving conditions it will go into over drive but occasionally it doesn't an after a certain amount of time if it doesn't shift in o/d it will throw the p0741 code tcc system stuck off. Now when I'm driving and I notice it's not in o/d I can usually play around with the speed and eventually get it to shift. I've never changed the trans fluid since I've had it for close to 100000 miles now and I'm kinda worried about changeing it because I herd that with old trans fluid it could cause more problems then it could help. The fluid now is brown on the dipstick and doesn't smell burnt and isn't gritty. Do you guys think changeing the fluid and maybe a TCC solenoid might do the trick and fix this? Thanks guys any help would be appreciated