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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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Old 12-03-2007, 04:57 PM
philipland philipland is offline
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Location: fl
Join Date: Dec 2007
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Mein Auto: '98 528i
e39 water leak

I have a 98 528i that's leaking coolant (slow drip when hot) from the rear of the engine on the passanger side. I can't identify the location, but the drip is falling on the exhaust manifold's mounting point to the exhaust pipe. The fitting on the opposite side of the head that feeds the heater core appears ok. I suspect the head gasket, but have no other symptoms other than this coolant loss. Any one had a similar problem?
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Old 12-20-2007, 11:48 AM
ll6691 ll6691 is offline
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Location: California
Join Date: Dec 2007
Posts: 3
Mein Auto: 528i
My 97 528i has a similar problem. It started as an overheating problem, then got a lot of parts replaced, including thermostat, thermostat housing, outflow hose, coolant expansion tank and the fan clutch. Now the temperature seems stable but the coolant is loosing somewhere slowly. When the car is hot, there is an odor of coolant from the vent. Not sure if the coolant is burnt under the hood or there is a leak in the heater core.
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Old 12-20-2007, 12:06 PM
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amancuso amancuso is offline
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Mein Auto: Z3 2.3iA/5MT 528iA VW GTI
My 97 328i also had a mystery coolant leak II6691, you might want to check your radiator. I discovered that mine leaks slowly while under load from either the drain plug or the lower side of the radiator where the plastic end meets the metal fins. Long story short, I have a radiator on order.

1999 528iA
2000 Z3 2.3
2003 M5
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