Parts Catalog Accessories Catalog Tech Info Tech Forums
 
  Search our site:    
 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 02-13-2001, 09:43 AM
ivan
Guest
 
Posts: n/a
Sometimes my heater/AC fan will sometimes come on and blow in the cabin and sometimes not. Is it overly sensitive to inside temp? When I set it to maximum AC or maximum heat, it still will not come on when outside temp. is around 50 degrees.

I've checked the fuses and the A/C compressor is running. Don't know if any of the relays behind the fuses that control the fan.

Shouldn't the fan come on full blast when the setting is at minimum temp. and the fan speed set on high rather than auto. no matter what the outside temp.?

Thanks for any insights.
Reply With Quote
  #2  
Old 02-13-2001, 10:15 AM
glmoy
Guest
 
Posts: n/a
Try turning key slightly counter clockwise after starting car!!!!

I've had this problem for at least 50K in my car. The fan
runs when I turn the key slightly counterclockwise after
starting car. I suspect the lock cylinder is going south.
Perhaps,next thing to fix.

Gary
Reply With Quote
  #3  
Old 02-13-2001, 11:16 AM
Registered User
 
Join Date: Jan 2000
Location: New Bedford, MA USA
Posts: 1,583
What happens when you hit the defrost button. It should come on full blast, except if it's really cold and then it will wait until the coolant is at at least 40c or so. Try it. Let us know..
__________________
Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.
Reply With Quote
  #4  
Old 02-15-2001, 09:47 AM
ivan
Guest
 
Posts: n/a
heater fan problem solved!

Thanks for the suggestions, guys. After doing a search on similar problems on this site, previous posters suggested checking the SEPARATE fuse outside the main fuse box and on top of the shock tower.

SURE ENOUGH, the 30 amp strip-fuse located just in front of the main box was cracked in half. Replacing it resulted in an immediate resumption of fan motor!

Anyone having a similar problem needs to be aware that the fan motor fuse for the heater is not included in the climate control fuses in the main box but is separate and by itself. (Now why would Mercedes DO that?)

Any other hidden fuse locations I should be aware of? Thanks for your help.
Reply With Quote
Old 02-15-2001, 09:47 AM
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
420sel Heater Problem SCOTTFISH Tech Help 0 10-24-2004 12:53 PM
Aux fan problem on '88 300e Botnst Featured Cars 1 07-23-2003 10:47 PM
1990 300e over heated now no internal blower fan comeing on. ceward Tech Help 0 07-05-2003 12:15 AM
300E Stalling Problem during low fuel T. Aitkin Tech Help 8 05-03-2002 01:25 AM
Low speed fan problem....89 300E MikeF Tech Help 4 02-03-2002 08:17 AM


All times are GMT -4. The time now is 04:06 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, 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