What was found
ENG NR 1 STRUT OVERHEAT LIGHT CAME ON AFTER TAKEOFF FROM PHX. ENG ANTI ICE WAS NOT ON. WITH REDUCTION OF POWER TO QUIET EPR LIGHT WENT OUT. LIGHT WAS ON FOR A TOTAL OF 15 SECONDS. SYSTEM TESTED GOOD. CONSULTED QRH. NO FURTHER ACTION TAKEN. FOUND LEAK AT IB CLAMP ON PRECOOLER . FLANGE CRACK REMOVED PRECOOLER IAW MM 36-11-051-4, DUCTS IN AFT STAIR GOING TO PRECOOLER REMOVED . INSTALLED NEW PRECOOLER AND SECURED ALL DUCTING AND ALL ASSOCIATED HARDWARE. RAN ENGINE AT IDLE, IDLE LEAK CHECK IS GOOD IAW MM 36-11-051-4.