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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 04-26-2013, 04:20 PM   #1
LORYDR96
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Join Date: Apr 2013
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Thermostat Replacement

I had a 'Service Engine Soon' caution light appear, went to Advance Auto Parts & after diagnostic check was told the thermostat is probably stuck open causing the fault code. it is a 2006 BMW 325CI, AT, with only 78,800 miles. I am a mechanic, just have not done much on the BMW mainly because it has been maintenance free or I have paid to have someone else do it. I ordered a replacement Behr thermostat w/gasket & free shipping for $65. Briefly I would like to know about anything special concerning the replacement. cooling fan is close, pulley removal?, coolant replacement, additional dissassembly req'd? Automatic Transmission, etc. Thank You, Melvin
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Old 04-26-2013, 05:34 PM   #2
haurelio
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welcome to the forums, always start by using the search button for faster responses.

http://www.bokchoys.com/differential/diy_thermostat.htm

http://www.bmw330ci.net/maintenance/thermostat.php

http://forum.e46fanatics.com/showthread.php?t=519743
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Old 04-26-2013, 06:43 PM   #3
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Use 32mm wrench to get fan clutch off.

Use BMW coolant with distilled h2o.

Bleed your system when done.

T25 bit needed for fan shroud.

Might want to do your WP at the same time, you are right there. If you need one real quick pm and i can help you.
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Old 04-27-2013, 05:39 PM   #4
LeMansteve
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At 78,000 miles, it's probably in your best interest to go ahead and refresh the entire cooling system with new parts. Search for username "Mango" and check out his guides for more info.
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Old 04-27-2013, 05:51 PM   #5
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Quote:
Originally Posted by LeMansteve View Post
At 78,000 miles, it's probably in your best interest to go ahead and refresh the entire cooling system with new parts. Search for username "Mango" and check out his guides for more info.
He's doing it in steps, which is fine.

If you don't have the fan clutch too, you need something like a screw driver to tension your belt so you can get the fan clutch nut loose.
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