93 olds bravada...started runing like crap.... idles fine...runs fine "most of the time"..... all the suddens cuts out an sputters an has NO POWER then it comes right back..... been through pretty much everything i can think of still does it..... HELP ME BEFORE I CRUSH IT!!!!!
I have a '90 s-10 blazer w 4.3 liter v6 that does that also, however only in winter weather. I was thinking it was one of the fuel injection sensors,,,,,or timing,,,, have not pinpointed it yet. It does have 207k miles, still runs good and doesn't smoke. In warm summer weather it goes away.