Starting a new thread for troubleshooting... I recently completed "ish" a 97 Impreza OBS to 02 WRX swap with the help of the wonderful people in this forum However, things still need a fixin
-Copied from my old thread... -> I'm still ironing out a few quirks, (Main Issue) IAC code P0508 and Evap code P0457.
I've tried nearly everything short of getting a write up from on Demand on the trouble shoot process...
For my IAC code, the car idles fine. when I'm rolling and i clutch in,if I'm still in gear, my rpm will stay at 1200-1500 RPM. If I'm in gear and let off the gas the car will slow down until i hit about 1200 rpm then keep it's speed.
Things I've tried:
-Clean out IAC and throttle body
-Check continuity and OHMs at ECU plug to IAC (Passed)
-Replaced IAC Valve
-Smoke tested and did not find any leaks
-Compression and leak down test (Passed)
-Logs show Neutral position switch is working as intended
-Replaced AT ECU with MT one for the heck of it (did not fix code)
I'm at a loss. Has anybody else encountered this weird problem? Google search results show nothing about this problem.