I have had recurring issues with my "check engine light" coming on

Had the same problem with my Raider. At first it was under warranty. But they just kept telling me nothing wrong (because they were in the middle of selling the dealership), then told me they couldn't service it because they had to train mechanics after the sell of dealership done. After about a year and 3 more returns to repairs department, would get temporary fixes but would always go back to same problems. Mine also much worse in hot weather. Since warranty ran out, took to different mechanic because Mitsubishi didn't seem to now what they were doing. Got fuel pump replaced last month, now doing it again and this time was told I would have to take back to dealer to repair because it is the "PCM". Every time we have been told something different on cause of problem. VERY expensive pickup to own. Going to "repair" one more time and trade it.