Blue Print discusses two parts designed to solve two common issues with vehicle filters.
Cabin Filter Set
Part number: Blue Print ADB112512, ADB112513
To fit: BMW 1 Series (F40), 2 Series (F44, F45, F46), X1 (F48), X3 (F39), MINI (F54, F55, F56, F57, F60)
Problem
Front footwell carpets are wet. On removal of the cabin filter during routine maintenance it is found to be moist and has started to become mouldy, causing odour within the car.
Cause
The heater housing evaporator drain is blocked or excessive leaf litter within or near the heater intake is causing an obstruction. Another possible cause is that the air conditioning housing access cover – located next to the cabin filter service cover – is incorrectly fitted and allowing condensation to leak into the vehicle’s interior.
Solution
Remove any leaf litter from the heater intake and check and clear the heater housing drain tube. Take off the air conditioning evaporator housing access cover and check that the mating surfaces will provide a good seal. Refit and apply pressure while tightening the retaining screws.
For vehicles equipped with climate control replace the cabin filter with Blue Print part ADB112512 activated charcoal filter. For vehicles without climate control use Blue Print part ADB112513.
Blue Print cabin filters ADB112512 and ADB112513 are made to OE-matching quality. From February 2016 the vehicle manufacturer removed spacers on the edge of the filter and Blue Print follows this change in the OE design.
Oil Filter with seal rings
Part number: Blue Print ADB112106
To fit: BMW – 1 series – E81, E82, E87, E88. 3 series – E90, E91, E92, E93. 5 series – E60, E6. Engine: N40 – B16A, N42 – B18A,B20A, N43 –B16A, B16AA, B20A, N45 – B16A, B16AC, B20A, N46 –B18A.
Problem
The engine is very noisy and ‘rattling’ on start-up, with the oil pressure warning light and engine warning lamp illuminated. The engine is in reduced power (‘limp home’) mode.
Possible fault code stored in the engine control unit: 30C1 static engine oil pressure control.
Cause
The oil filter may have become twisted or broken-up inside the oil filter housing; restricting oil flow.
Solution
Firstly, check if the engine oil is at the correct level and adjust if necessary. Subject to the oil level being correct, carry out a diagnostic test (using a suitable diagnostic tool) to check for fault codes and the pressure of the engine oil. The oil pressure can also be checked at the oil filter housing – using a suitable, external oil pressure gauge. The minimum oil pressure at idle is 1.5 bar (22 PSi) at normal operating temperature.
If the oil pressure is found to be below 1.5 bar (22 PSi), drain the engine oil and remove the oil filter. Inspect the oil filter element to check if it is twisted and broken-up inside the oil filter housing. If it is, you will need to replace the engine oil and filter, and re-test.
If the oil filter element is complete, replace with a new oil filter – refilling it with the correct grade and quantity of engine oil. Clear the fault codes and re-test. If the problem is still apparent, further investigation of the oil pressure control valve, oil pump and timing chain tensioner and guides will be required.
