What was found
RT FUEL GAUGE FREEZES INTERMITTANTLY CAUSING A FUEL CONFIG LIGHT. CROSSFEED DOES NOT MOVE GAUGE. PERFORMED FUEL QTY BITE IAW FIM 28-41 FAULT TREE 847 FOUND NO PRESENT FAULTS. FOUND FAULT IN HISTORY LEG 00 LM DENS SENS OPEN AT PROC A03. LEG 01 LM DENS SEN OPEN AT PROC A04 AND LM DENS CONTAM OR RESISTOR G01. FOUND FAULTS ON ALL LEGS IN HISTORY, REQUIRES FURTHER TROUBLESHOOTING. REMOVED AND REPLACED THE LEFT DENSITOMETER IAW AMM 28-41-03. REMOVED AND REPLACED THE LEFT DENSITOMETER HARNESS IAW AMM 28-41-09. OPS CHECKED GOOD IAW AMM 28-41-00-715-001-002.