What was found
ACM OVERHEAT, BLEED AIR OVERHEAT, WING OVERHEAT, FUMES IN COCKPIT. INSPECTED ACM , NO DEFECTS NOTED. RUN APU AND OPS CHECK ENVIRONMENTAL SYS , ALL PARAMETERS NORMAL, ALL COCKPIT INDICATION NORMAL, TROUBLESHOT LT & RT ENGS PYLON RAM AIR ACTUATOR. PERFORMED TAXIING & HIGH POWER RUNS & FOUND NORMAL HEATING ON BOT LT & RT AI SYS. FOUND ANNUNCIATIONS FOR L & R O'HEAT TO BE NORMAL BUT WAS NOTED DURING (TO) DETENT THAT ACM O'HEAT LIGHT WAS ILLUMINATING . DID NOT HAVE ANY RESISTANCE INCREASE WHEN APPLYING HEAT. FUNCTIONAL TEST OF ANNUNCIATION LIGHT ON COCKPIT ON HARNESS SIDE WERE NORMAL WHEN JUNPING PIN ( A ) & ( B ) "ON" PT007 & PT008 FOR L & R O'HEAT LIGHTS. FOR ACM O'HEAT WAS NOTED THAT THE O'HEAT SWITCH ( ST012 ) RESISTANCE WAS AT 8.3 OHMS WHEN IT SHOULD BE 5 OHMS ON PINS 1 & 2.. ALSO WHEN APPLING HEAT THERE WAS NO CHANGE IN RESISTANCE. FUNCTIONAL CHECK OF ANNUNCIATION WAS NORMAL PIN (1 AND 2) WHEN JUMPED ON THE HARNESS SIDE ( PT038 ) ACM O'HEAT LIGHT WAS TURNING (ON). R & R LT & RT BLEED O'HEAT SWITCHES & ACM TEMP SENSOR IAW 36-11-00, 25-52-00 . WM REF: 21-52-00. R & R ACM OVER HEAT TEMP SWITCH ST012 FOLLOWED BY FUNCTIONAL TEST WITH NORMAL RESULTS DURING HIGH POWER RUN " NO" ACM O'HEAT NOTED DURING STEPS. WORK PERFORMED IAW MM REF: 36-11-00, 25-52-00 ,76-11-00. WM REF: 21-52-00. R & R LT & RT BLEED AIR O'HEATS SWITCHES ( ST017 & ST014 ) PERFORMED OPS CHECKS WITH NORMAL RESULTS IAW MM 36-11-00, 25-52-00 ,76-11-00. WM REF: 21-52-00.ALL ACCESS CLOSED.