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 06-03-2000, 11:46 PM
wilton
Guest
 
Posts: n/a
This afternoon after cruising at about 70 mph for about 30 min with cooling sys doing very nicely - lowing nice cold air, immediately when I released the accelerator to exit the interstate, the heating/cooling sys started blowing very hot air. Is it possible that when I released the accelerator, linkage somewhere may have caught a vac tube and pulled it loose, causing the heating/cooling valve (Is it mono valve?) to switch to "HEAT". After getting home, I checked for loose tubes under hood only briefly before being chased inside by thunderstorm and darkness. BTW, earlier in the day, I had isolated door lock system at "Y" connection (2 yellow tubes) near the brake booster. Tranny shifting is still normal. Compressor engages. Any ideas? TIA

------------------
Wilton Strickland
Goldsboro, NC
91 350 SDL. 81 300D
Reply With Quote
  #2  
Old 06-03-2000, 11:53 PM
wilton
Guest
 
Posts: n/a
I forgot to say I was driving the 81 300D! 'Sorry. It's the 123 suddenly blowing hot air on deceleration & unable to get to cool since.

------------------
Wilton Strickland
Goldsboro, NC
91 350 SDL. 81 300D
Reply With Quote
  #3  
Old 06-04-2000, 12:08 AM
wilton
Guest
 
Posts: n/a
I should have read some of the previous posts on this subject before jumping in with my questions so quickly! I realize now that its the mono valve that controls flow of coolant to heater core. Evidently, something happened when I decelerated to cause mono valve to loose elec. power and open fully, allowing heater core to suddenly fill with very hot coolant. Valve is still open.

------------------
Wilton Strickland
Goldsboro, NC
91 350 SDL. 81 300D
Reply With Quote
  #4  
Old 06-04-2000, 07:34 PM
wilton
Guest
 
Posts: n/a
Investigation this afternoon revealed very dead battery and non-charging alternator. I tightened alt. belt slightly, and all is back to normal - at least so far.

------------------
Wilton Strickland
Goldsboro, NC
91 350 SDL. 81 300D
Reply With Quote
  #5  
Old 06-04-2000, 09:59 PM
Registered User
 
Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
Be sure to check the brushes inside the alternator. If you catch them before they damage the armiture, you will save a bundle.

------------------
Benzmac:
Donnie Drummonds
1992 500E (very soon I hope
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM
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
COld air intake W201 190e crhenkel Performance Paddock 21 09-01-2007 07:18 PM
Heater suddenly won't blow warm air bobboyer5 Vintage Mercedes 7 03-04-2004 09:24 AM
Cold Air Intake System Turbo][ Performance Paddock 4 01-21-2004 06:02 PM
94 94 C280 with intermittent air distribution problem ronin Tech Help 6 04-29-2003 10:08 AM
Air conditioning - always high and cold/high hot smartin Diesel Discussion 3 04-22-2003 02:13 AM



All times are GMT -4. The time now is 04:20 AM.


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