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 08-03-2003, 09:28 PM
bmunse
Guest
 
Posts: n/a
86 420 sel engine wash, now no AC

After washing my engine a/c compressor won't engage and the low speed of auxiliary fan runs all the time. I searched here and read a suggestion that a temp sensor on the left front of the engine could be the problem for the aux fan. Could this be the problem? Is it on the intake or front face of the block? Has someone else had this problem? Thanks
Reply With Quote
  #2  
Old 08-03-2003, 10:24 PM
bmunse
Guest
 
Posts: n/a
Well, I solved my own problem. I found a temp sensor mounted in the thermostat housing. When I unpluged the two wire side of it (There is a separate 1 wire conector) while the engine was running, the aux fan quit running and the ac came on. I can't understand why this temp sender could be affected by an engine wash. No cracks- it looks good. Anyway, tomorrow I will replace that puppy and all should be well. I hope . I will report back since I started this thread, maybe someone else can benefit.
Reply With Quote
  #3  
Old 08-03-2003, 10:44 PM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: SF Bay Area
Posts: 19,749
That's the 105/115 switch. At 105C one wire gets a ground signal to turn on the aux fans. At 115C another wire gets a ground signal to cut the compressor. Maybe water pooled on the switch and grounded the wire the cut compressor wire. Or the plastic housing has gotten brittle with age and water seeped in.

Sixto
95 S420
91 300SE
87 300SDL
83 300SD
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 05:51 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