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 09-06-2010, 07:56 PM
Registered User
 
Join Date: Jul 2010
Location: Austin, TX
Posts: 13
Repeatedly Blowing No. 8 Fuse

1985 Mercedes 300 CD

Not sure if this Post should go here in Diesel, or elsewhere in Tech?

After working well all summer, today my AC began blowing hot air. I checked the fusebox legend and it said the Blower Motor and AC Compressor is No. 8 fuse (By the way, the Blower Motor continues to blow (hot) air just fine)

I checked to find No. 8 fuse (blue, 25 Amp) discolored, so I replaced it with a new fuse. In short order, that fuse blew as well.

I know to check to wires to the clutch on the AC compressor. I guess it could be a faulty, shorting, button in the Climate Control module?

Any other suggestions of places to look would be greatly appreciated

Reply With Quote
  #2  
Old 09-06-2010, 08:13 PM
zeke's Avatar
Registered User
 
Join Date: Sep 2007
Location: The Alamo City, TEXAS
Posts: 1,189
Could be a problem at the blower or the aux fan, but mine turned out to be rotten wires at the the terminal strip right behind the overflow coolant tank.
__________________

Current Mercedes
1979 maple yellow 240D 4-speed


Gone and fondly remembered:
1980 orient red 240D 4-speed

Gone and NOT fondly remembered:
1982 Chna Blue 300TD

Other car in the stable:
2013 VW Jetta Sportwagen TDI / 6-speed MT
Reply With Quote
  #3  
Old 09-06-2010, 10:40 PM
toomany MBZ's Avatar
Registered User
 
Join Date: Nov 2006
Location: central Va
Posts: 7,820
If the brushes on the motor are very short, they'll draw more amperage just to work normally, thereby blowing fuses.
Good luck and let us know what you do.
__________________
83 SD

84 CD
Reply With Quote
  #4  
Old 09-07-2010, 06:33 PM
Yak Yak is offline
Registered User
 
Join Date: Aug 2009
Location: San Antonio, TX
Posts: 1,711
Do you have a matchbox sized box on your driver's side strut tower, aka an "aux fuse?"

If your blower motor still works with a blown fuse then it's possible you have the replacement fuse and don't need the number 8 fuse. It's a mod made on many cars. I don't have a number 8 and my A/C works.

You'd still need to figure out the cause - maybe the compressor, maybe the blower motor, maybe the wiring.

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 07:37 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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