Okay, I’m new here and to be honest inly reason I created an account here is I heard a lot of these rams are notorious for computer and misfire problems. But this ram is doing something I have heard anyone mention before. So it’s a 2008 ram 1500 quad cab 5.7L HEMI. The check engine light comes and goes , sometimes it will sit there and blink , but what I found interesting is I pulled the battery and replaced it, took maybe 5-10 mins for the light to come back... but when it did and I scanned it it came up with a whole lot of codes ranging from the voltage to the transmission I’ll post a picture also. But then I cleared the codes ..another 5-10 mins it came back but this time all it’s throwing is a p0300.multi misfire. - on a side note random question. Is it possible if I have a bad alternator/regulator that would cause a P0300?