I have a 2000 Camaro 3.8 liter. It died getting onto the freeway. I pulled over and tried to start it, it would start up but then die right away. I noticed the smell of fuel and white smoke coming out the tail pipe. I got it home, checked the fuel pressure and it stayed at 44psi. Has a full tank of gas. Just changed the oil a couple weeks ago. Pulled the spark plugs, they were black and smelled like fuel. Replaced the plugs and wires. It started and ran fine for about 45 seconds then started to die down and would rev up on its own to keep itself running, then black smoke came out of the exhaust. I turned it off. You could smell fuel from the exhaust. Tried to start it again but it would only crank and not start. I noticed the reduced engine power light is on. Has anyone run into this problem?

 

You need to pull the codes.
Sounds like a possible sensor failure of some type