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 ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 11-26-2001, 07:05 PM
Registered User
 
Join Date: May 1999
Location: Calgary, Alberta, Canada
Posts: 190
No heat on 1994 C220.

A good friend of mine has a 1994 C220 and the heater does not seem to be working properly. It is quite cold here (-12C), and none of the climate control buttons do anything. Yesterday after he left it running for over an hour, he came out and the fan was running and it was tosty inside. The engine temperature seems to be reading fine on the gauge. Any ideas what might be the problem?

Thanks,
Steve
Reply With Quote
  #2  
Old 11-27-2001, 09:08 AM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
On this & "almost" all MB's there is a heater valve that closes when a 12V power signal is sent to it. Try disconnecting the electrical connection & you should have FULL heat. If not then the heater valve isn't allowing water to flow OR the heater core is partially plugged.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
  #3  
Old 11-28-2001, 03:17 PM
Registered User
 
Join Date: May 1999
Location: Calgary, Alberta, Canada
Posts: 190
The heater and fan will come on now once in a while on its own. Sometimes after 40 minutes of driving other times right away. The display and all the buttons seem to works for the HVAC. It is really cold here (and hard to see without defrost).
Reply With Quote
  #4  
Old 11-28-2001, 06:34 PM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Sounds like you mean the blower doesn't work at times?
If that is the case then you need to find out if the blower motor OR blower regulator(electronic) has failed.
Both are under the rt underdash panel, next to the micro(dust) filter.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
  #5  
Old 12-25-2001, 06:29 PM
Registered User
 
Join Date: Apr 1999
Location: Toronto, ON, Canada
Posts: 113
Hi M.B. Doc,

How do you test whether the blower motor and the blower regulator are working properly?

Let me know. Thank you.
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Location of the transmission modulator on 1994 Mercedes c220 ericnguyen Tech Help 1 09-09-2012 01:14 AM
1/2 heat out of dash 1994 C280 hos280 Tech Help 1 01-03-2005 09:15 PM
1994 Mercedes c220 California Smog Check II Results ericnguyen Diesel Discussion 3 04-05-2004 05:24 PM
1994 Mercedes c220 California Smog Check II Results ericnguyen Tech Help 1 04-02-2004 08:00 PM
Newbie questions about 1994 c220. ericnguyen Tech Help 10 01-31-2003 08:20 PM



All times are GMT -4. The time now is 09:02 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, 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