Hi guys , this is my first post here. i have the same problem of 2nd to 3rd gear delay , (Service Engine Soon ) light is on , the O/D and light flashing , and i have to get my foot off the accelerator to make it shift smoothly. but it also has yet another "symptom" , i hear a hissing sound when the RPM goes higher and the transmission is struggling between 2nd and 3rd gear. i heard this sound before when i drive fast and the RPM is about 5000 , but i didn't give it any attention. i had it checked by a computer and the Solenoid error appeared , and another error in 3rd gear. is replacing the Solenoid Pack gonna fix my car ? or do i have to do other things to fix it? i'm from Libya , we don't have a lot of Fords here , so i'm gonna have to buy online and ship the part from the U.S , so it would really be helpful to give me a link of any parts i need to purchase. my car is a 4X4 2003 explorer 4.0L V6 VIN code is : 1FMZU72E03ZB13486 , i don't know what type of transmission i have. thanks for your time.