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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 11-10-2012, 09:53 AM
Rain_xiv Rain_xiv is offline
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Mein Auto: 2003 bmw 325i
coolant issues

Whats up.. my car was overheating therefore I replaced the water pump, thermostat, and temp senor. Which in turn fixed the overheating. But now my cars is drinking coolant. I had to top it off twice since eliminating the previous problem, but on my last top off I've notice little browm particles. What is this and why....
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  #2  
Old 11-10-2012, 10:04 AM
Y2K_Bimmer Y2K_Bimmer is offline
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Little brown OILY particles? or like rust particles?
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Old 11-10-2012, 10:15 AM
Rain_xiv Rain_xiv is offline
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It isn't rust and I wouldn't say it looked oily. It had a was more in a sense gummy or mushy
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Old 11-10-2012, 03:47 PM
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halltristan halltristan is offline
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Quote:
Originally Posted by Rain_xiv View Post
It isn't rust and I wouldn't say it looked oily. It had a was more in a sense gummy or mushy
Ever used stop leak in your coolant system? Sounds like the culprit to me.

Unfortunately though, this could also be a blown head gasket. You need to do a compression test.
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  #5  
Old 11-10-2012, 07:06 PM
Joeedawg1911 Joeedawg1911 is offline
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I'm new here and this might sound like a stupid question, but(here I go) after you changed out all your coolant parts, did you bleed the system properly? (Tip: You'll know if it's not properly bleed if your heater doesn't warm up.) I only say this because the same thing happened to me. My expansion tank cracked, so I changed it out. Filled it up without bleeding it and after running it for 5-10 minutes it said I needed coolant again. Filled it up again and AGAIN, on shut down, said it needed coolant. I started to panic because I thought I might of blown the head gasket. Anyways, If you did bleed the system properly, and your heater does work then it possibly sounds like a head gasket. How long did it overheat for?

Last edited by Joeedawg1911; 11-10-2012 at 07:06 PM. Reason: Said parts twice.
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Old 11-11-2012, 04:51 AM
todd92 todd92 is offline
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You warped the head when you overheated it. The coolant is going out through the cylinders.
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