my b18c7 2000 motor running with 98 itr ecu idles low (800-875) fluctuating
in trafic and dropping on complete stops.
when i remove the fuel pressure vacume line the car runs perfect, it responds very well and starts much better in the morning( does not stall on the first attempt)

I changed the fuel pressure regulator but no change. also opend air screw on tb
no big differance.

i ran out of things to do. can anyone help

thank you.