I have a 2000 taurus 3.0dohc with ax4n with 120000 miles Just got it Trans light would flash after about 10 miles at 55 mph. so checked the fluid about 1 pint low filled to spec. But it was brownish not red so i thought maybe change filter and fluid did that now drove it about 8 miles at 55mph light started to flash trany shifted to 2nd gear and stuck there now just have 2nd and reverse. Ihave a obd II code reader but cant get any codes from trany or trany is not sending out any codes. Please help let me know if i need to post more info. Thanks.