Thermostat operation: How long does the engine take to warm up? - Mercedes-Benz Forum
 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 03-31-2010, 06:07 AM
BenzWorld Member
 
dykaar's Avatar
 
Date registered: Mar 2008
Vehicle: 2001 E320 4matic Wagon
Location: Waterloo, Ontario, Canada, eh
Posts: 111
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Thermostat operation: How long does the engine take to warm up?

01 E320 4matic wagon 55K miles. The engine seems to take FOREVER to heat up. By comparison, The Aluminum/Magnesium V8 in the BMW only takes a couple minutes. Searching yields conflicting opinions about thermostat replacement. On longer trips the temp gauge eventually hits ~80C, and there is heat.

Comments? If in doubt, throw it out (the thermostat, not the car)?


Regards,

doug
Waterloo, Ontario Canada, eh


86 951 (https://reg.pcaucr.org/forum/post.jsp?postid=2393)
01 E320 (W210) 4matic Wagon (http://www.benzworld.org/forums/w210...ml#post3790569)
00 540i-6 (http:// BMW Club of Canada, Trillium Chapter |)
94 855 turbo Wagon (sold in 09)
85 535i-5 (sold in 07)
83 944 (sold in 86)
I apparently only buy cars designated by numbers

Regards,

doug

86 951 (http://pcaucr.org/media/image-galler...all&gallery=22)
01 E320 (W210) 4matic Wagon (http://www.benzworld.org/forums/w210...body-do-2.html)
00 540i-6 (http://forums.bimmerforums.com/forum...hp?albumid=976)
94 855 turbo Wagon (sold in 09)
85 535i-5 (sold in 07)
76 300D (sold in 92)
83 944 (sold in 86)
I apparently only buy cars designated by numbers
dykaar is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 03-31-2010, 06:13 AM
BenzWorld Elite
 
jlomon's Avatar
 
Date registered: Dec 2006
Vehicle: 2013 VW Golf Sportwagen TDI, 2011 Mazda 2, 2000 E320 4Matic Wagon (retired),1994 C280 (retired)
Location: Toronto, Canada
Posts: 3,488
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Hi Doug,

I'm just down the road from you in Mississauga, and have basically the same car. I can tell you from experience that the M112 V6 is a cooler running engine than other MB engines, such as the M104 inline 6 I have in my C280. Having said that, it sounds like yours isn't getting hot at all. It should find its way to about 87 degrees, the temperature where the thermostat begins to open. Your climate control should be giving you heat in the interior within 5 to 7 minutes of a cold start - you'll normally start to get warm air when your temp gauge shows ~60 degrees. You should be above 80 a few minutes after that. My guess is that your thermostat is stuck in a partially open state, allowing the coolant to circulate freely through your system, albeit somewhat restricted by the partial closure. A thermostat is a cheap and easy DIY. That's where I'd start.
jlomon is offline  
#3 (permalink) Old 03-31-2010, 06:22 AM
BenzWorld Member
 
dykaar's Avatar
 
Date registered: Mar 2008
Vehicle: 2001 E320 4matic Wagon
Location: Waterloo, Ontario, Canada, eh
Posts: 111
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Thanks for the reply. That was my initial response, but then I saw that FCP groton doesn't list the part, which tells me its not a common failure. Now I see them on ebay. Is $44 the going rate?

Regards,

doug

86 951 (http://pcaucr.org/media/image-galler...all&gallery=22)
01 E320 (W210) 4matic Wagon (http://www.benzworld.org/forums/w210...body-do-2.html)
00 540i-6 (http://forums.bimmerforums.com/forum...hp?albumid=976)
94 855 turbo Wagon (sold in 09)
85 535i-5 (sold in 07)
76 300D (sold in 92)
83 944 (sold in 86)
I apparently only buy cars designated by numbers
dykaar is offline  
#4 (permalink) Old 03-31-2010, 07:19 AM
BenzWorld Elite
 
jlomon's Avatar
 
Date registered: Dec 2006
Vehicle: 2013 VW Golf Sportwagen TDI, 2011 Mazda 2, 2000 E320 4Matic Wagon (retired),1994 C280 (retired)
Location: Toronto, Canada
Posts: 3,488
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
$39.50 here, without having to worry about eBay vendors. I use these guys all the time. Free shipping over $75. You can get your MB coolant from them at $21 a gallon. Don't use non-MB coolant. Find something else you need for $15 and you've got your shipping for free.

2001 Mercedes-Benz E320 4Matic Wagon - Thermostat Kit - BUY 2001 Mercedes-Benz E320 4Matic Wagon - Thermostat Kit
jlomon is offline  
#5 (permalink) Old 03-31-2010, 07:52 AM
BenzWorld Member
 
dykaar's Avatar
 
Date registered: Mar 2008
Vehicle: 2001 E320 4matic Wagon
Location: Waterloo, Ontario, Canada, eh
Posts: 111
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
I went with AutohausAZ. $26.56 for the thermostsat and free shipping over $50 (to my friends in Rochester NY). A few bits and bobs, a couple wiper blades and it adds up. My buds at at FCP Groton wouldn't match the free shipping on a small (<$100) order. Unfortunately, thats usually not a problem...

Regards,

doug

86 951 (http://pcaucr.org/media/image-galler...all&gallery=22)
01 E320 (W210) 4matic Wagon (http://www.benzworld.org/forums/w210...body-do-2.html)
00 540i-6 (http://forums.bimmerforums.com/forum...hp?albumid=976)
94 855 turbo Wagon (sold in 09)
85 535i-5 (sold in 07)
76 300D (sold in 92)
83 944 (sold in 86)
I apparently only buy cars designated by numbers

Last edited by dykaar; 03-31-2010 at 07:57 AM.
dykaar is offline  
#6 (permalink) Old 03-31-2010, 08:11 AM
BenzWorld Junior Member
 
stevejensen's Avatar
 
Date registered: Dec 2008
Vehicle: 2001 E320 4Matic, Desert Silver, 127K miles, wonderful condition.
Location: Oregon City, Oregon
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I had the same problems you describe last winter --- replaced the thermostat -- it was stuck part way open. Fixed the problem !
stevejensen is offline  
#7 (permalink) Old 03-31-2010, 08:41 AM
Lifetime Premium Member
 
e-420's Avatar
 
Date registered: Sep 2008
Vehicle: 1997 E-420, 1997 SL500, 2004 Silverado CC 4x4 Duramax,
Location: Portland, OR
Posts: 1,672
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Lifetime Premium Member
Good chance the thermostat is bad, opening early. This is a pretty common failure mode for thermostats, not just on MB, especially after 100K miles or so. The thermostat on my 97E420 failed like this. Also have had the same failure on other non MB cars between 100K-150K miles. Often times it is gradual, so you don't realize it's going until you notice how long it is really taking to warm up.


--------His------------Hers-------

97 SL500 Imperial Red
/Parchment Leather/Black Top


Chromed OEM wheels, Akebono's, H1+90 fog, Burlwood/Leather shift knob, Rostra Lumbar support, Check seat heaters, Bilstein's, Parrot Bluetooth, GG Bailey Custom cargo mat, GG Bailey trunk mat, Real Burlwood Instrument Cluster w Chrome rings, Burlwood & Chrome shift surround, Euro headlights with Osram 70W/65W H-4's, clear corners, Silverstar corner lamps, Euro Trunk mount Warning triangle, SL600 Burlwood armrest trim & Burlwood cupholder sliding cover, Kahtec flashing third brake light (CHMSL)


97 E420 Royal Indigo/Grey Leather

Raintracker wiper, Rostra Lumbar support, Parrott Bluetooth, 17" chrome AMG replica wheels, Bilstein's, Akebono's, smoked marker lights, Osram 65W H7's, H1+90 fog, Rear Seat Child restraint Tether, Burlwood/Leather shift knob, OEM Mudflaps, DRL's, Becker Aux input
e-420 is online now  
Reply

  Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W210 E-Class


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Topic Author Forum Replies Last Post
2003 c240 4matic wagoon takes long time to warm up contact148 W203 C-Class 5 02-12-2010 09:34 AM
Warm Up Relay WUR operation. doug brewer W123 E,CE,D,CD,TD,TE Class 4 01-02-2010 12:25 PM
Thermostat for 366 engine Plowguy Unimog 4 02-18-2009 12:01 AM
How long for replacing thermostat? graftdesign W126 S,SE,SEC,SEL,SD,SDL Class 8 01-26-2007 08:00 PM
How long do you guys do "warm up" NewMBie W126 S,SE,SEC,SEL,SD,SDL Class 30 12-22-2004 05:42 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome