1993 f150 4.9 5 speed manual
Having bucking issues while accelerating. When I got the truck a month ago, it would only happen once in a while. Mainly on the highway and would just cut out for a few seconds then kick back on. I ignored it and it drove very nicely. No matter the load or rpm, it drove fine. Until a couple weeks ago it was cutting out again. I noticed the voltage gauge was going crazy. I noticed the bolts attaching the alternator case together were loose. I tightened the bolts and haven’t had an issue for a few weeks…. Until Yesterday, I started the truck and started driving and it would buck and the truck felt like it was struggling to get fuel or something. No voltage gauge issues this time. It was just bucking while accelerating and having trouble picking up speed. No codes other than 522, 565 when engine is off. And 30 while engine is running. I am at a total loss. I am thinking about removing EGR vacuum like and capping it to see if the issue comes back. I do have an exhaust manifold leak but no codes related to a o2 sensor issue.
Has anyone had an issue similar to this? And what should I test for first since it is intermittent?