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
  #16  
Old 06-28-2008, 07:29 PM
Registered User
 
Join Date: Nov 2003
Location: lompoc ca
Posts: 26
Results just in from both vehicles:

red to black= 12v
red to yellow=2-2.3v
yellow to black= 10v

To get access to the blue wire do I pull the Wiper assembly? Thanks.
__________________
51 willys M38
62 willys M38A1
79 chevy
92 300D
95 300D
96 vision recumbent
2004 Wrangler
Reply With Quote
  #17  
Old 06-28-2008, 08:37 PM
Registered User
 
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
Ok

You have to go down to blower ..when you get there , test for 12v at red wire on blower w/key ON...if YES,.. then ground the blu wire at motor with a jumper..if that gets you full fan, you have a bad regulator or no trigger voltage to reg [ yellow wire ]

http://www.peachparts.com/Wikka/W124BlowerMotor
__________________
A Dalton

Last edited by Arthur Dalton; 06-28-2008 at 10:34 PM.
Reply With Quote
  #18  
Old 07-04-2008, 11:49 AM
a famous author's bathtub
 
Join Date: Aug 2006
Location: Southern NJ
Posts: 68
Causes of Climate Component Failures

Dalton, I appreciate your simple test procedures. I am having what I believe to be regulator issues and will use your test to confirm. My question, however is, what leads the regulator to go bad?

In my case I have a 124.133 (87 300D Turbo) and at about the 21 year mark the fan stared to make grinding sounds (over months) and died...figuring it was probably bad, I replaced it to find the fan didn't run "as it should". Would a failed blower motor cause the blower regulator to fail?

Additionally, I have one observation on my installation of my blower motor...I noticed that on hook-up and checking its performance before reassembly of the unit that the motor (with ignition on) runs constantly. Do you have any comments on this with regards to correct functioning of the control unit and regulator?

Mike
__________________
MIKE
1987 300D Turbo, 225K
124.133/603.960
Reply With Quote
  #19  
Old 07-04-2008, 11:53 AM
a famous author's bathtub
 
Join Date: Aug 2006
Location: Southern NJ
Posts: 68
(I had to post this to subscribe to this post)

(I had to post this to subscribe to this post)
__________________
MIKE
1987 300D Turbo, 225K
124.133/603.960
Reply With Quote
  #20  
Old 07-04-2008, 12:24 PM
Registered User
 
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
Regulator failure is usually caused by high blower circuit Amp draw due to bad/worn motor bearings or brushes.
Also caused by lack of maint. of cabin air filters , but that does not apply to your chassis [ only later systems w/filtration.]
__________________
A Dalton
Reply With Quote
  #21  
Old 07-06-2008, 07:02 PM
Registered User
 
Join Date: Nov 2003
Location: lompoc ca
Posts: 26
Grounded the Blue wire today. Motor runs fast and strong, looks like I'm in for a regulator. Many thanks for all the help.

I have parents that live in Florida/N.H. We're headed out that way next month.
__________________
51 willys M38
62 willys M38A1
79 chevy
92 300D
95 300D
96 vision recumbent
2004 Wrangler
Reply With Quote
  #22  
Old 07-06-2008, 07:08 PM
Registered User
 
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
<>

Both states ??
__________________
A Dalton
Reply With Quote
  #23  
Old 01-27-2014, 08:38 AM
whunter's Avatar
Moderator
 
Join Date: Dec 2003
Location: Metro Detroit, Michigan
Posts: 17,353
Adding data links

W124 Blower Motor Removal Photos
W124 Blower Motor Removal Photos - PeachParts Mercedes ShopForum

MONO BLADE VERTICAL parked windshield wiper
Build a Free Website with Web Hosting | Tripod

Hesitating Wiper Repair
202Tech - Hesitating Wiper Fix

Blower Motor and Blower Regulator Replacement 1993 300E
http://www.davebarnhart.com/mb300E/Blower/Blower3.htm


.
__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Prototype Vehicle build.
Prototype Fleet Durability
Prototype vehicle instrumentation.
Technical Quality Auditor.
Automotive Technical Writer

1973 300D
1973 309D - stolen
1978 280SE
1980 240D
1983 300D
1984 190D
Reply With Quote
  #24  
Old 11-19-2014, 03:18 PM
Registered User
 
Join Date: Nov 2013
Location: Eugene OR
Posts: 35
I know this is an older thread but lets see if you guys can help me figure this out.
When i measure the voltage at the 3 pins with ignition on CC at defrost and fan high, I get 0 volts on all pins.
With ignition off I get
10v on red/yellow
12.1v on black/red
Fuse link at shock tower does the same. It has 12V going trough it with ignition off 0V with ignition on.
What now?
Reply With Quote
  #25  
Old 11-19-2014, 03:50 PM
Registered User
 
Join Date: Nov 2013
Location: Eugene OR
Posts: 35
I've replaced the CC unit and tried again with CC temp wheel set to max heat, defrost, fan high.
This time
12V bl/rd
2.2V rd/yl
Than I thought thats it, I put the plug back in and the blower motor turned on.
Until i switched the ignition off and on again now it's dead.
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 10:25 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, 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