What was found
DURING TAKEOFF, A HEAVY ODOR OF EXHAUST FUMES. CABIN AIR TEMP FLUCTUATED WITH NO DEMAND FROM CREW. COLD TO HOT ETC. RAN ALL PACKS FULL HOT TO FULL COLD, NO FUMES DETECTED. CLEANED TEMP SENSOR FOR COCKPIT, COURIER AND CABIN AND OPS CHECKED AUTO TRIM SYS IAW AMM 21-60-00-5, ALL ZONES CHECKS OK FOR SERVICE. ACFT IS OK FOR SERVICE.