Luxaire furnace repair . Furnace is shutting off on flame sensor due to the collector box being cracked and dripping on top of the burner box and flame sensor . Furnace operates after flame sensor has being heated up from cycling on and off a few times . Flame sensor is producing 2.4 ua after heated . Recommend to replace collector box and have a maintenance done on furnace . Inducer motor is also starting to show signs of wear and tear , with bearings getting loud . Adjusted gas pressure from 3.7 inw down to recommend 3.5 inw Furnace is also running hot with an 80 f differential, discussed with customer turning up fan speed and we decided not to due to extra winding noise .