I have a '95 Diablo with a R check engine light. When key on/off trick it blinked twice (weak feul mixture). I swaped o2 sensors and the opposite check engine light came on. Ha Ha easy fix right, WRONGO I replaced both o2 sensors with oem sensors, cleared the check engine light and went for a drive. The car had a smoother idel but here's the bad part. After about 20 minutes of driving not only one but yes folks, BOTH check engine lights came on. Key on/off again both blinks twice again. If anyone has had this happen please help, I did read that unhooking the battery in conjunction with clearing the code is important I can try that. If anyone can help me I would be greatfull.