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      02-28-2013, 06:51 PM   #37
Artmasterx
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Drives: 2007 BMW 335i
Join Date: Jun 2008
Location: MA

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2006 Volvo V70R  [5.00]
2007 BMW 335i  [5.00]
Quote:
Originally Posted by mike3000fl View Post
This is happening to me.

A month ago, car overheated, yellow temp light, then red temp light. Pulled over, opened hood, car had puked coolant.

I assumed water pump was fucked. Let it cool down, restarted without the cap off, and... i see the coolant pumping (small hose on expansion tank will piss coolant into tank). Drove home. No issues in a month.

Today...... Yellow light, Red light, Pull over, cool down, remove cap, start car, coolant is flowing, top off with hose and drove home another hour with no issues.

My thoughts.... Both times, the car has puked, the coolant system is boiling or the cap is weak and the coolant blows out under the hood. Both times, like you said, the heater quit working which makes me think either there was air in the heater core or the pump had quit circulating. Both times, a simple off-on cycle has fixed it.
not sure and not an expert, but maybe you can check for water pump codes (though I am not sure of the procedure or tools required... maybe a BT tool?)
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Current: 2007 335i sedan
Alpine White | Sports | Premium | Cold | Comfort Access

FORMERLY: 128i coupe
Alpine White | Sports Package | Black Leather
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