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 > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 10-30-2007, 09:33 AM
Registered User
 
Join Date: Oct 2005
Location: Dayton, VA
Posts: 207
CCU not fuctioning at all

The CCU in my 300SDL has totally quit(no air flow). I checked the fuses in the fuse panel and they all looked fine. The CCU is "suppose" to be a rebuild. Any suggestions where to start? Could I wire it to stay on all the time? It is getting cold and a little heat would be nice.
Thanks
A

__________________
1987 300SDL
187,000 miles
Reply With Quote
  #2  
Old 10-30-2007, 09:36 AM
TX76513's Avatar
Platinum Member
 
Join Date: Apr 2003
Location: Brandon, Mississippi
Posts: 5,203
Before you replaced the CCU - did the car have the same symptoms?
__________________
BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif
15 VW Passat TDI
00 E420
98 E300 DT
97 E420 Donor Car - NEED PARTS? PM ME!
97 S500
97 E300D
86 Holden Jackaroo Turbo D
86 300SDL
(o\|/o)
Reply With Quote
  #3  
Old 10-30-2007, 09:39 AM
Registered User
 
Join Date: Oct 2005
Location: Dayton, VA
Posts: 207
No. It worked with the replacement CCU during the summer, became intermittent and now does not work at all. It just seems odd that it does not blow any air at all.
A
__________________
1987 300SDL
187,000 miles
Reply With Quote
  #4  
Old 10-30-2007, 09:44 AM
TX76513's Avatar
Platinum Member
 
Join Date: Apr 2003
Location: Brandon, Mississippi
Posts: 5,203
Have you ruled out the blower regulator. blower motor, and/or temp sensor as suspect problems? Check your PM's (private mail)
__________________
BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif
15 VW Passat TDI
00 E420
98 E300 DT
97 E420 Donor Car - NEED PARTS? PM ME!
97 S500
97 E300D
86 Holden Jackaroo Turbo D
86 300SDL
(o\|/o)

Last edited by TX76513; 10-30-2007 at 09:56 AM.
Reply With Quote
  #5  
Old 10-31-2007, 10:23 PM
Registered User
 
Join Date: Oct 2005
Location: Dayton, VA
Posts: 207
blinking light

Also,
The circulating light(button next to rear defrost) is blinking.
TX76513, do you know how to test the blower regulator. blower motor, and/or temp sensor? I will search the forum to see if anyone has any tips.
Thanks
A
__________________
1987 300SDL
187,000 miles
Reply With Quote
  #6  
Old 10-31-2007, 10:26 PM
Jeremy5848's Avatar
Registered Biodiesel User
 
Join Date: Mar 2006
Location: Sonoma Wine Country
Posts: 8,394
Blower motor

You can test the motor by unplugging its cord and connecting the motor terminals directly to 12 Volts. If it runs, the problem is elsewhere. If it sparks but does not blow, the motor is frozen. If it doen's even spark, there's an open circuit somewhere inside the blower motor.

Jeremy
__________________

"Buster" in the '95

Our all-biodiesel family
1995 E300D (W124) . .239,000 miles My car
1996 E300D (W210) . .313,000 miles Wife's car
Santa Rosa population 170,685 (2012)
Total. . . . . . . . . . . . 722,685
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970
Reply With Quote
  #7  
Old 11-01-2007, 08:56 AM
Registered User
 
Join Date: Oct 2005
Location: Dayton, VA
Posts: 207
Jeremy,
Do you know the best way to access the blower motor?
Thanks
A

__________________
1987 300SDL
187,000 miles
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 01:21 PM.


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