2000 Honda Civic LX single overhead cam.
replace the head gasket, new head bolts, used throttle body new gasket, new iacv and gasket, new map sensor still throwing PO505 code.

i reset the ecu by disconnecting battery negative and also did it again pulling the ecu fuse and backup.

i purchase a inexpensive iacv from Amazon worked fine for about 30 miles and PO505 code came up. Order new iacv from Oreilly and installed it rest the ecu and idle going up and down. Any thoughts I running out of options. I keep seeing I should run it for about 30-60 miles? If I run it that long and code comes on again do I continue or reset it? Any help would be great.