Need to know what is going on with my truck.
Started out not running when I got it. Turned out the spider injectors burnt up so we replaced them and it ran great for a week. It sat for two days without running, then I went to start it and it wouldn’t start. Turned out the new fuel pressure regulator went bad already. Replaced that and then it started up but ran rough, wouldn’t idle right, would stall out. If I put it in gear it would die on me. It’s showing a P0122 after replacing everything. We put in a new throttle sensor and a new map sensor, it ran good for a minute then went back to running bad. Need help figuring this out, any help is much appreciated.