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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

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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  #1  
Old 11-27-2006, 08:39 PM
ecool ecool is offline
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Mein Auto: 92 325i, 00 528i
Thermostat replacement....diy

Does anyone have a write up or a link on how to change the thermostat on an e39?
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  #2  
Old 11-27-2006, 08:43 PM
frhsfootball80 frhsfootball80 is offline
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Location: keller, tx
 
Join Date: Jun 2006
Posts: 2,575
Mein Auto: e39 m5 & 92 civic
drain the coolent, ten remove the 4 10mm bolts, swap it with the new one. thats about it really
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  #3  
Old 11-27-2006, 08:52 PM
Lanc3r Lanc3r is offline
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Mein Auto:
I used the Bimmerfest search function for E39 cooling system.

Found this:
http://www.bmwtips.com/tipsntricks/T...tat/tstat.html

Since you have to remove the fan, might as well do the water pump, expansion tank, radiator, and related hoses. I am sure they are all about due.

Good luck.
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  #4  
Old 11-27-2006, 08:55 PM
frhsfootball80 frhsfootball80 is offline
looking for a car
Location: keller, tx
 
Join Date: Jun 2006
Posts: 2,575
Mein Auto: e39 m5 & 92 civic
o man mybad, i thought u had a 540i. yah misterlance's advice would be more helpful then mine. sorry
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  #5  
Old 11-28-2006, 12:06 PM
cn90 cn90 is online now
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Mein Auto: 1998 528i 5-sp 140K+
This is my write-up

Quote:
Originally Posted by ecool View Post
Does anyone have a write up or a link on how to change the thermostat on an e39?
Go through that carefully, written for 98 528i. So for your 2000 528i, the only difference is the thermostat housing which itself contains the thermostat (electrically controlled).
Otherwise straightforward:

http://bimmerboard.com/forums/posts/199986/

By the time you need a thermostat (I assume you have at least 80-100K), then time to do the cooling system overhaul (see the write-up), other parts will soon follow:
-Radiator
-Belts
-Tensioners
-Fan Clutch
-Fan Blades etc and etc.

Do the complete overhaul now and you will save time later to do bits and pieces.
Total cost for parts about $550. Labor was mine

Good Luck!

HTH
cn90
98 528i
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  #6  
Old 11-28-2006, 03:19 PM
poolman poolman is offline
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Not to jump the thread-but whats with the electriaclly controled thermostat? is the part electrical , are there little doors in there operated like a tstat.
Poolman
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  #7  
Old 11-28-2006, 11:10 PM
AZ-528i AZ-528i is offline
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Mein Auto: 2000 528i
I agree with cn90! While you have the fan off, overhaul the whole system. You will be thankful you did. E39 radiators are notorious for going bad around 60K miles.

Here is a part list that I made when planning my overhaul (purchased from https://www.autohausaz.com/index.html

*******>********>
Part NumberBrand / DescriptionDescriptionPriceQtyTotal
17111436381Behr Expansion Tank/Coolant Reservoir$67.54 1$67.54
11531438632Metzeler Expansion Tank/Coolant Reservoir Hose$23.98 1$23.98
11531438633BMW (OE) Expansion Tank/Coolant Reservoir Hose; Expansion Tank to Additional Water Pump$22.98 1$22.98
17111712963BMW (OE) Fan Shroud Rivet/Fastener; Plastic Expanding Rivet For 8mm Hole, 15mm Diameter Face$0.23 2$0.46
82141467704BMW (OE) Miscellaneous Fluids/Treatments; BMW Antifreeze; 1 Gallon$23.57 2$47.14
17111436060Nissens Radiator$129.95 1$129.95
11531705224BMW (OE) Radiator Hose; Lower with Temperature Sensor Fitting$22.66 1$22.66
99000003352BMW (OE) Radiator Hose; Radiator Vent Hose Fitting Nipple$1.60 1$1.60
11531705223BMW (OE) Radiator Hose; Upper with Bleeder Screw Fitting$23.50 1$23.50
17111427156Elaplast Radiator Hose; Vent Hose from Radiator to Expansion Tank$5.58 1$5.58
5PK0863 Conti-Contitech Serpentine Belt/Ribbed Drive Belt; A/C Compressor$9.59 1$9.59
6PK1538 Conti-Contitech Serpentine Belt/Ribbed Drive Belt; Alternator/Power Steering/Water Pump$16.58 1$16.58
11530139877Wahler Thermostat; Thermostat Kit with Housing and Seal$53.74 1$53.74
$425.30
EXTRAS
17111712788Vaico Coolant Bleeder Screw; At Expansion Tank/Radiator - Reuse old one if in good condition$3.42 1$3.42
17111723580BMW (OE) Coolant Bleeder Screw; Mounting Clip for Expansion Tank - Reuse old one if in good condition$1.78 1$1.78
17111742231Reutter/CRP-Continental Radiator Cap/Expansion Tank Cap; 2.0 Bar - Reuse old one if in good condition$8.80 1$8.80
17111737706BMW (OE) Radiator Mount; Lower Left Radiator Mounting Bracket - Reuse old one if in good condition$7.75 1$7.75
17111737707BMW (OE) Radiator Mount; Lower Right Radiator Mounting Bracket - Reuse old one if in good condition$7.95 1$7.95
17112246750BMW (OE) Radiator Mount; Rubber Lower Mount- Reuse old one if in good condition$12.13 2$24.26
11537509357VictorReinz Thermostat Gasket/Seal; Thermostat Housing to Block - New pump should have gasket$4.20 1$4.20
__________________


2000 528i
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  #8  
Old 11-29-2006, 06:12 AM
bensonc bensonc is offline
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Mein Auto: E39 540i, E38 740i
check if you need idel pully, mine changed at the same time as I found it have play even it didn't make noise
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  #9  
Old 03-07-2011, 02:44 AM
Takechan Takechan is offline
E39 fanboi
Location: Scandinavia
 
Join Date: Mar 2009
Posts: 244
Mein Auto: BMW E39 520i (M52B25)
I just ordered a new tstat, housing and o-ring. Will I need to apply some sort of sealant to the housing?

It isn't really mentioned in the e39 cooling overhaul.
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  #10  
Old 03-07-2011, 09:49 AM
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bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 20,537
Mein Auto: 02 BMW 525i M54 auto 130K
Cooling system overhaul DIYs:
- Pictorial look at typical E39 cooling system failure modes (1) (2) (3)
- Complete cooling system overhaul recommended parts list (1)
- Coolant, for engine, automatic transmission, power steering, and AC evaporator cooling (1)
- Bleeding the cooling system (1) (2) (3)
- How to refill M52/M54 coolant DIY by cn90 (1)
- Cooling system DIY (cn90 1997-1998 M54TU) (cn90 V8) (aioros '99-03 M54) (Ågent99 '01 530i) (pelican 3-series)
- E39 Fan shroud removal DIY (Besian) (M54)
- Removal instructions for the alternator & drive belt system of a 2002 525i
- Removal instructions for the fan shroud of a 2002 525i
- Tools necessary for a cooling system overhaul
- Cooling system overhaul tips (fan clutch nut removal tools) (cn90 fan clutch nut replacement trick) (bb hose removal trick) (o-ring replacement parts)
- Cooling system overhaul mishaps (broken radiator nipple) (crooked fan clutch nut) (broken bleeder screw) (thermostat loom misplaced) (broken expansion tank nipple & cn90 repair) (expansion tank fell apart inside)
- Expansion tank floating mechanical coolant level sensor height (1) (2)
- High instrument cluster check of the cooling system temperature KTMP (1)
- Cooling system date stickers & radiator date codes & markings (1) (2)
- What brand of waterpump to buy (1)
- Fan clutch failure modes (1)
- Fixing a head gasket coolant leak (1) (2)
- What is the temperature of the coolant & when the thermostat opens under normal conditions (1)
- Modifying the cooling system (pressure cap) (zero psi fluids) - Zionsville (BlackBMWs) (William) (ohmess)
- Understanding the AUC automatic air recirculation (aka stink) sensor (1)
- Behr radiator and Behr expansion (aka surge) tank autopsy (1) (2) & request for another autopsy (1)
- Debugging overheating problems not related to low fluid levels (1)
- How to install and remove an Oetiker clamp (1)
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  #11  
Old 03-07-2011, 12:56 PM
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BentValve BentValve is offline
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Quote:
Originally Posted by poolman View Post
Not to jump the thread-but whats with the electriaclly controled thermostat? is the part electrical , are there little doors in there operated like a tstat.
Poolman
+ 1. I wanted to replace my t-stat when I did my vanos but I found out my t-stat was built into the housing and I bought the wrong one. Damn split year E39.
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  #12  
Old 12-16-2012, 07:43 PM
professorman professorman is offline
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Location: Virgina
 
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Posts: 157
Mein Auto: 2000 525i
Where do you guys recommend to buy the thermostat from? Can I buy it from Autozone? Or should I get genuine BMW parts? From where?
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  #13  
Old 12-16-2012, 07:51 PM
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Fudman Fudman is offline
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Mein Auto: '02 530i Sport auto
Didn't the 525 come out in 2001?
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