Ok, started this afternoon with replacing the heater core on my 88 Formula. I now have heat. I then decided to get gas and see how the Fiero is doing after doing a tune up and replacing the kickdown cable. Got on the highway and Fiero seemed fine, even though when I slow down and give it more gas that it doesn't seem to have power right away. So, I'm headed home, and decide to stop by Little Caesar's pizza. Get into medium to turn left, and the car stalls when I come to a stop. I'm able to start it back up, but when I put it into drive or reverse, it kills the motor. Luckily a local police officer stops, blocks on coming traffic, and with another guys help, pushes me out of the medium and into Food Lion's parking lot. I call a friend who is on his way to tow me home. I'm a mile away from the house. Called wife and told her that I'm going to get AAA next payday, especially since I don't trust the Fiero on the road yet. I try to start the Fiero again, but this time is hesitates and dies versus running like it did before. I've had a service engine light on. How do I go about reading the service engine light? Any thoughts on what might be wrong?