My 92 Ramcharger is flashing a code 27 , check engine. I have tried everywhere to find what the code means is wrong and get conflicting answers as to what is wrong. The truck has a new rebuilt 5.2 first gen injected engine that runs great, it has less than 200 miles on it so far. the "check engine light comes on about 30 seconds after start up and stays on. All the sensors were replaced except for the 2 on the throdel body at the time of rebuild. No one around here has the factory dianostic tool for a first gen computer. Anyone have any ideas ? Any imput will be appreciated.