E46Fanatics - View Single Post - M54 Oil Pump solution
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Old 05-15-2011, 08:47 AM   #48
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Join Date: Sep 2007
Location: Chicagoland
Posts: 14
My Ride: Z4
Originally Posted by OrientBlau View Post
I am more concerned with the life of the oil pump under normal operating conditions. ... I have also had the red oil lamp come on and flicker on many occasions after driving it hard. Im wondering if maybe I have some issues with the oil pump.
Sounds exactly like what happened on my '04 530i at about 70k. The red oil pressure light would come on for a few seconds after: long drive, idle, starting up again slowly. (Panic time when going up a one way parking garage ramp helix with no exits.)

The dealer replaced the sender first and ultimately ended up replacing the oil pump.

Oil pump pressure is proportional to engine speed, so if there's a problem developing it will likely appear first at your lowest speeds when the oil is really hot and then disappear as the engine speeds up.
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