Hi! I have fd3s 2000 AT, full stock, except new exhaust without catalyst.
Sometimes (doesn't depend on temperature or anything else) when i shift to reverse, my car is trying to stall. RPM is slowly dying and if don't touch acceleration pedal car will stall.
I had this problem before rebuild and have it now.

Also, after rebuild there was another problem: sometimes after start (not first start) i have idle pulsing for about one minute.

What can i do? Thanks )