Check it out. Now, since I purchased my 96 explorer in 2003 it had a check engine light and it had two codes, which were shift solenoid and speed sensor shift solenoid or something like that. All these years all I did was change the transmission oil filter and oil and she would run better. Then after about six months to a year she would start to slip again until it went out just before I got a chance to changed it. I also got OD alarm and engine would go like on brake mode and I would just force her to go forward pressing on the gas pedal or dropping to hi or low 2 or 1 on shift lever and she would drive better anyone with this problem also. what solenoids should I change before putting her back up?