this is very informative. after putting my truck in 2 shops a while back & not 1 of them could find
why my truck was trying to shut down(engine stop light come on) it would shake, sputter then be o.k. for a while. I looked at all the cable ends. they all looked good. I replaced all cables. ALL OF THEM. no problem since. looking at just the ends was not good enough in my case. there was corrosion beyond & under the ends, & coatings. after putting my truck on the comp, it showed all kinds of codes, like oil press @ 12 lbs, water temp too high. wich none of there were true. i knew then it had to be something electrical to show things were happening, when they indeed they were not. after 8 days in the shop, a few hundred dollars & a couple grand lost in revenue. i fixed myself by replacing, ground to batt & frame, hot from starter & batt, & all jumpers, & new ecm wire. though I sure learned something. oh & i also replaced hot & ground on alt. it cost me 2 hours & about 200.00 something that 2 shops & 8 days could not do.