MBWorld.org Forums

E-Class (W123) 1976-1986: 240D, 280E, 300D, 300TD, 300CD

Aux Fan always runs

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jun 16, 2008 | 03:53 PM
Share
  #1  
Flatlander1961's Avatar
Flatlander1961
Thread Starter
Almost a Member!
 
Joined: May 2008
Posts: 31
Likes: 0
1983 240D 356K, 1985 300D 268K
Question Aux Fan always runs
Does anyone know what tells the Aux fan to turn on? My comes on no matter how cold the engine is. All I know is there is no sensor in the radiator. My car is a 1983 240D. It has 343,000 miles now
Reply
0
Old Jun 16, 2008 | 06:40 PM
Share
  #2  
240D 3.0T's Avatar
240D 3.0T
Banned
 
Joined: Apr 2006
Posts: 1,116
Likes: 5
From: Federal Heights, CO
1982 300D VNT, 1980 240D 3.0T, 1982 300TD
The sensor on the A/C receiver dryer (Behind the right headlight). The fan does not get turned on by the engine coolant temperature.
Reply
0
Old Jun 19, 2008 | 05:00 PM
Share
  #3  
Flatlander1961's Avatar
Flatlander1961
Thread Starter
Almost a Member!
 
Joined: May 2008
Posts: 31
Likes: 0
1983 240D 356K, 1985 300D 268K
One more ?
If my freon is depleted, would that make the aux fan come on also?
Reply
0
Old Sep 14, 2008 | 11:32 PM
Share
  #4  
tanktube67's Avatar
tanktube67
MBWorld Fanatic!
 
Joined: Nov 2007
Posts: 4,433
Likes: 5
From: SFV CA
2008 Black Out C350 Saks Edition / 87 VW GTI
depleted
what do you mean by that?
Reply
0
Old Dec 5, 2008 | 11:37 AM
Share
  #5  
Flatlander1961's Avatar
Flatlander1961
Thread Starter
Almost a Member!
 
Joined: May 2008
Posts: 31
Likes: 0
1983 240D 356K, 1985 300D 268K
Sorry it took so long: My freon is depleted and I was wondering if that would cause the sensor in the drier to think the aux fan needed to come on?
Reply
0
Old Dec 6, 2008 | 02:31 PM
Share
  #6  
240D 3.0T's Avatar
240D 3.0T
Banned
 
Joined: Apr 2006
Posts: 1,116
Likes: 5
From: Federal Heights, CO
1982 300D VNT, 1980 240D 3.0T, 1982 300TD
No, that would prevent it from coming on.
Reply
0
Tags
Back to Subforum
E-Class (W123)
View Next Unread
Winter Driving Advice needed

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


You have already rated this thread Rating: Thread Rating: 0 votes, average.
Show Printable Version
Email this Page

Advanced Search

All times are GMT -4. The time now is 12:13 PM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE