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How to remove thermostat housing on E39 / 1997 528i

 
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John Vollenweider



Joined: 02 Mar 2006
Posts: 52

PostPosted: Fri Nov 02, 2007 6:59 am    Post subject: How to remove thermostat housing on E39 / 1997 528i Reply with quote

Can the housing be removed from engine without removing radiator shroud, fan blade etc.??????
Thanks , John

I need to replace thermostat and thermostat housing.
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walshja



Joined: 03 Apr 2001
Posts: 1139
Location: guilford, ct, usa

PostPosted: Fri Nov 02, 2007 3:50 pm    Post subject: Reply with quote

on my e36 I was able to remove the thermostat and housing without removing the fan, but I believe I did need to remove the shroud.

I just did my wifes e39 cooling system, and unfortunately I cannot remember if you need to remove all those parts, I am thinking you may not have to remove it all, since there is more room.

but removing those parts only takes a few more minutes, to save you aggravation I would plan on removing it all.
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joe

1994 325iC, 195k miles
http://home.comcast.net/~walshja/index.html <--- check it out

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808e39



Joined: 04 Nov 2007
Posts: 3

PostPosted: Sun Nov 04, 2007 2:52 am    Post subject: Reply with quote

John, you can remove the thermostat housing without removing the fan/shroud. A 3/8in drive 13mm socket and 1/4in drive 10mm (short and deep) socket will work. You'll need both hands for this and a lot of manual dexterity.
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fuji0010



Joined: 28 Apr 2009
Posts: 1

PostPosted: Tue Apr 28, 2009 9:29 am    Post subject: Reply with quote

About three months and 4500 miles ago I took my 1997 BMW 528I to a BMW dealer to be ... I payed 1500 to replace,thermostat, housing, water pump, checked all the ... This has been an engineering fault from bmw (in my opinion) on the e39.

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edjack



Joined: 04 Feb 2002
Posts: 3887
Location: San Jose, CA

PostPosted: Tue Apr 28, 2009 10:10 am    Post subject: Reply with quote

The E39 cooling system weaknesses are legendary. One needs to accept the fact that these components must be changed periodically, just like tires and brakes.

Once you get to that point, you'll feel better about the car, and enjoy its many attributes.

Mike Miller, in Bimmer magazine, says that water pump, mechanical t'stat, fan and clutch, and t'stat housing (plastic, I assume) be changed every 60k; and radiator, exp tank, and pulleys every 90k.
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Ed BMW CCA member since 1987 (Nr. 62319).
'97 540i 6 speed Aspensilber over Aubergine interior.
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walshja



Joined: 03 Apr 2001
Posts: 1139
Location: guilford, ct, usa

PostPosted: Wed Apr 29, 2009 2:24 pm    Post subject: Reply with quote

I've had 3 BMW's so far, replacing the cooling system on all 3 because the upper neck on the radiator broke on each. plastic necks??? come on engineers. . .
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joe

1994 325iC, 195k miles
http://home.comcast.net/~walshja/index.html <--- check it out

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