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-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-23-2006, 03:33 PM
Registered User
 
Join Date: Mar 2006
Posts: 5
300E blower off/onn

Just got my first Mercedes, an '89 300e. To be brief the blower motor wasn't working and I was told by a well-respected local Mercedes tech that it was shot and the job would cost $500. Bought one on ebay for $75 and my mechanic discovered it was only a bad ground. He fixed that (leaving orig. blower in). Now it won't go off. The controls don't seem to do anything (climate control dial DOES change temperature, though) - no manual so I don't know how to operate it anyway.
Any theories?

Reply With Quote
  #2  
Old 03-23-2006, 03:35 PM
Registered User
 
Join Date: Oct 2004
Location: Baton Rouge La
Posts: 2,632
I am not an electrician, but it sounds like a resistor problem in the CCU...someone who has had a similar problem should be able to chime in.
__________________
1989 300ce 129k
( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone)

1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus

1994 e320 Cabriolet 108k



1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it


[/SIGPIC]
Reply With Quote
  #3  
Old 03-23-2006, 06:17 PM
Ron in SC's Avatar
Registered User
 
Join Date: Aug 2003
Location: Charleston, SC
Posts: 1,095
Could it have something to do with the regulator also in the evaporator box?

I know the connector from the blower motor has three wires and I think one has something to do with the regulator.
Reply With Quote
  #4  
Old 03-23-2006, 07:11 PM
Registered User
 
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
The blower circuit is a switched ground through the regulator, so if he grounded it , it will not switch off now and it will also only run at high speed .
Is that the case????????????????
Reply With Quote
  #5  
Old 03-23-2006, 09:42 PM
Registered User
 
Join Date: Mar 2006
Posts: 5
That is correct - it seems to be running full blast and the controls don't do anything. He grounded it to where some other grounds were - but why was it not running before he did that?
Reply With Quote
  #6  
Old 03-24-2006, 01:29 AM
Registered User
 
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
Grounding it takes the regulator control out of the circuit.
It is just a cheap fix for a bad reg or Control Panel.
Reply With Quote
  #7  
Old 03-24-2006, 11:48 AM
Registered User
 
Join Date: Mar 2006
Posts: 5
How can I make it stop until I have a chance to get it worked on? Can I pull a fuse that doesn't affect anything else?
Reply With Quote
  #8  
Old 03-24-2006, 11:54 AM
Registered User
 
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
Sure
It has it's own fuse link [ outside fuse box]

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 01:52 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page