Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-10-2002, 12:00 AM
daveCT's Avatar
Registered User
 
Join Date: Jun 2002
Posts: 455
16v runs cooler with the a/c on

hi
this is a weird one see if anyone can help

its a 86 190e 16v, when at ilde or in traffic it runs hot,
it doesn't overheat because I don't let it. Hot is 100.
when i notice its at 100 i turn on the a/c and it dropps
back to 75 very quickly on doesn't rise agian?
If the a/c goes off it risies back up fast?
I just changed the fan clucth ,water pump, radiator, im also running like 80 water and 20 MB antifreeze with water wetter.
it seems to help alot
thanks
dave

190e 16v
Iroc 911
gyrocopter
Attached Thumbnails
16v runs cooler with the a/c on-ams3-88_s178.jpg  
Reply With Quote
  #2  
Old 09-10-2002, 12:13 AM
Piotr's Avatar
Registered User
 
Join Date: Jul 2002
Location: Middletown, DE
Posts: 739
That's a no-brainer. Your main fan switch never starts. The reason is your auxillary fan always runs when your ac is on. Your main fan kicks in at about 110C and stays on until your temp goes down to 100C. So, when you turn your ac on your aux fan starts and cools the engine down. Now, since 190's use 100-110C switch ("starts at 110C stops at 100C") you actually never give the switch/main fan a chance to do it's job. If you don't believe me, ask any MB dealer mechanic.

Now, if at an idle your engine temp exceeds 115C, your switch is probably bad (it's about $22.00). I have a 1996 Stang, and the temp continuously oscillates between middle and about 2/3 of the gauge, so 110C for a 190 is an equivalent and it's normal, and, I believe, it's not "too hot".
__________________
1985 190D 2.2l Sold-to Brother-in-law
1996 Mustang 3.8l -"thinks it's a sports car"
1988 Grand Wagoneer - Sold (good home)
1995 Grand Cherokee Ltd -"What was I thinking??!!"
Reply With Quote
  #3  
Old 09-10-2002, 12:14 AM
Piotr's Avatar
Registered User
 
Join Date: Jul 2002
Location: Middletown, DE
Posts: 739
By the way, tkamiya-190s have only one auxillary fan in front of the radiator, and one main behind it. So, no "low speed" fans...
__________________
1985 190D 2.2l Sold-to Brother-in-law
1996 Mustang 3.8l -"thinks it's a sports car"
1988 Grand Wagoneer - Sold (good home)
1995 Grand Cherokee Ltd -"What was I thinking??!!"
Reply With Quote
  #4  
Old 09-10-2002, 12:42 AM
daveCT's Avatar
Registered User
 
Join Date: Jun 2002
Posts: 455
yup

the temp switch is working for the main fan and it does come on at 110 i tested it, but in my driveway i can watch it climb to almost over heating if i dont rev it ? at what temp should the elecrtic fan swith on it seems to only come on with the climate
controll
Attached Thumbnails
16v runs cooler with the a/c on-mb-motorsport92-s127.jpg  
Reply With Quote
  #5  
Old 09-10-2002, 01:31 AM
Registered User
 
Join Date: Dec 2001
Location: Rutherford, NJ
Posts: 29
Actually, the "low" setting of the auxillary fan and the electromagnetic fan are both triggered by the freon pressure switch on the A/C drier. The 'high" setting of the auxillary fan is triggered by the temperature sensor in front of the engine. If you are running your 16v without A/C, both fans have to be triggered at temps above 100 degrees C.

*(100 deg C for the Elect. mag. fan and 110 for the Aux fan @ high: Red 3 prong switch for 16v)

*(105 deg C for the Elect. mag. fan and 115 for the Aux fan @ high: Green 3 prong switch for the 8v)

There are times that having your aux fan run at least on "low" actually prevents the temp from reaching above 100 degrees C to trigger your "highs".

I agree that 75 degrees C is a bit too low.
__________________
Bernie
1986 190E 2.3-16
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 05:08 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page