What was found
STRONG ELECTRICAL ODOR DETECTED WHIILE CLIMBING THROUGH FL 320 AND UNTIL A RETURN LANDING, THE ODOR DISSIPATED AT 4000 FT, NO SMOKE OR OTHER ABNORMALLY OBSERVED. REMOVED AND REPLACED THE NR 2 ENGINE IAW 71-00-00, PERFORMED REQUIRED TEST 1, 3, 4, 7, AND 12. OPS NORMAL.