We believe these are the areas in need of extra attention for the early BMW 3 Series 05 diesels.
Bearings fail in the high-pressure fuel pump; the resolution is to change the pump.
Leaking water pumps and cam cover gaskets can be a problem with the BMW 325i.
3 Series as a whole suffers ABS sensor problems, accounting for 37% of sales for top 20 Cambiare lines pertaining to the 3 Series model. Care should be taken to ensure that it is actually the sensor that is required when diagnosing, since poor connections can result in water ingress to the multi-plug, which can give the same code readings.
Ignition problems are close behind the sale of ABS sensors, with the sale of pencil coils at 28% of Cambiare lines for this model. Care should be made when selecting the replacement part since some of the pencil coils look identical at first view. The guide in the electrical multi-plug is in a different place, preventing the plug being fitted to the wrong coil.
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