I just bought my 94GT a couple of weeks ago. I only took it for about a 10 min test ride and everything seemed great. After I bought it I started getting CEL's. I had the codes pulled and I think they were 181, 189, and 556. The first were "lean condition in fuel banks 1 and 2" and the other was "intermittent fuel pump issue." A couple of people recommended a new fuel pump. I didn't want to start just throwing new parts at it and hope they fix the problem but I plan on making some upgrades so I figured a big pump was in order anyway. I swapped the pump for a 255L but it did not cure my CEL. It comes on after 10 - 15min. of driving and stays on until you turn the car off. Any ideas?