Idle and throttle bad after replacing tons of stuff. Please help

[coldweatherblue]

my bad yes it goes from the block. the hose from the valve cover to throttle body is the "breather hose"

[mzollo]

C191 is a circle connector twists apart be sure to check it for corrosion or see if the plug is wet, the boots are notorious for holding water. It powers your injectors so a faulty or corroded terminal may cause a misfire or rough running conditions. I just deleted mine to solve my isssue

[petmybadger]

If the fabled bitch tube o rings were bad would the car leak oil? Mine doesn't. Trying to narrow this down.

[Ginsterman98]

When is the last time you did a valve adjustment? Possible this is a mechanical issue. Do a compression test.