Hi this is my first post, I'm working on a 1986 22returbo, 2wd pickup, it starts and runs good until the check engine light comes on and after about 30 seconds it starts to run rough and dies. I turn the key off wait a minute and it starts and runs good until the cel comes on again. It doesn't seem to matter how fast its going, sometimes it will go 20 miles, and sometimes it will only go 2 miles.I pulled the codes and it came up with a 4, 7, and 11. I changed the plugs, cap and rotor , a fuel filter, and a different air flow meter I've tried unplugging every thing I could find trying to isolate the problem with no luck. Thank you for your help in advance .