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Water pump impeller? (archive)

[ Follow Ups ] [ 5-series (E34) Message Board ] [ Msg. Board FAQ ]

Posted by MicahO on July 31, 2001 at 09:19:29:

In Reply to: Overheating, Help!!!! posted by Kiet on July 31, 2001 at 07:44:03:

When was your water pump changed? Your car came with a pump that had a plastic impeller known to break down. It could be slipping, ready to break completely, and not moving water efficiently enough to cool the engine..... They typically go in the 60-80K mile range. While the other suggestions are also good possibilities, this is a known problem on the M50 motors.

Micah O'C
'92 525iT, new pump at 78K miles



I have a '93 525ia. The needle on the temperature gauge goes up to about 3/4 when I'm idling in traffic. The temp. goes down a bit when I'm driving. Could that be a problem w/ the fan clutch or the thermostat? Coolant level is fine. Please help! Thanks

Kiet





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