Rich, how can the PCM compensate for that extra air and adjust the idle so it's not screaming high when it can't do the same for a leaky intake manifold after someone doesn't reinstall it correctly after installing a new set of headers?That port is manifold vacuum. It may affect the idle when cold before the computer comes on line, but the PCM will compensate for the extra air and adjust the idle appropriately.
Well, I will look around underneath, haven't seen anything before, actually the heater works very good.. ok only on high but it works right.. Not sure if they could be connected? mmm no fan on speeds 1,2,3 only 4 for that I looked at replacing the blower resistor, (used from salvage yard, 4 of them) and a relay but no worky. Don't feel like throwing another $50 not knowing if it is gonna fix it.Bet your heater or AC doesn't work right now. Look around, the line that should go on there is laying around someplace close by, probably down underneath.
It may also be part of the purge system - eventually it may set an evap code.
That port is manifold vacuum. It may affect the idle when cold before the computer comes on line, but the PCM will compensate for the extra air and adjust the idle appropriately.