1995 525i CEL is on; can't pull codes???

[ProZak]

Howdy, all. I recently replaced my water pump (impeller was fine, shaft snapped, go figure) and went ahead and did both coolant hoses / thermostat / thermostat housing (swapped for a metal one) / flushed and filled coolant / replaced fan with an electric. So far, so good, but my CEL came on afterwards and I can't get the sucker to read on codes following the procedure on http://www.bmwe34.net/e34main/trouble/engine_codes.htm. What am I doing wrong?? I'm pretty sure the car was built in January of 1995, if that makes any difference. TIA for your help; you guys rock.

-Zak-

[ProZak]

Disregard, figured it out after gobs of searching; apparently, you have to begin the stomp test *immediately* after turning on the power, or it won't take. I was hesitating too long.