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 03-20-2001, 04:25 AM
Registered User
 
Join Date: Dec 2000
Location: New Hampshire
Posts: 36
This is more out of curiousity than a problem: Where is the interior temperature sensor on a 93 300D 2.5T (W124)? The reason I ask is that here in New England, even if it's 20-30 degrees out and I'm parked in even slight sun, when I first start the car the A/C is triggered for a while. The cabin isn't at all warm in these situations, so I figure only the sensor is. A little driving and the system corrects itself with heat coming up. However, sometimes I have to increase the temperature selector to about 80 degrees to accelerate this process. Like I said it's not really a problem. I don't mind, but sometimes my passengers think my car is nuts. Any thoughts? Thanks.
__________________
Bart

2002 ML500, 2009 CLK350 Cabriolet
93 300D 2.5 Turbo 265,000 Miles (Sold - bad idea)
Reply With Quote
  #2  
Old 03-20-2001, 05:12 AM
Registered User
 
Join Date: Dec 2000
Posts: 368

The interior temperature sensor is in the dome lamp housing. It's a small grille next to the sunroof switch (if you have one).
I'm not sure if this is the problem, but here is a simple test you can do.
The first thing you want to check is the ventilation blower for the temperature sensor. Get a small piece of paper 1 cm2 and place it over the grille. Make sure that the ignition is on. The paper should stay in place. If not, remove the glove box and check the small blower it's attached to the body on the right side. If it works you need to check the tubing for leeks.
To test the actual sensor is a bit more complicated and should be performed by a tech.

Good luck,
Vin
Reply With Quote
  #3  
Old 03-20-2001, 12:20 PM
Steve Wengel
Guest
 
Posts: n/a
For what it's worth, my W124 does exactly the same thing, and my climate control system is working fine including the aspirator motor (referred to in the post above). I figure that since heat rises, the sensor is reading a higher temperature than our bodies. Like yours, mine stabilizes after a minute or two. I think it's just the nature of the beast.
Reply With Quote
  #4  
Old 03-21-2001, 05:45 AM
Registered User
 
Join Date: Dec 2000
Location: New Hampshire
Posts: 36
Thanks Vin, I always wondered what that little grill was. Maybe someday I'll try that test. However, Spring is coming and this syndrome will start working for me not against. Thanks again, Bart
__________________
Bart

2002 ML500, 2009 CLK350 Cabriolet
93 300D 2.5 Turbo 265,000 Miles (Sold - bad idea)
Reply With Quote
  #5  
Old 03-21-2001, 11:42 AM
Registered User
 
Join Date: Jan 2000
Location: PA
Posts: 5,440
Where is the sensor in a '87 300SDL?

P E H
Reply With Quote
  #6  
Old 03-21-2001, 06:50 PM
MBenzNL's Avatar
MBenzNL
 
Join Date: Jan 2001
Location: the Netherlands
Posts: 1,417
Somewhere up the center of the dash or at the dome light as well (I think it is at the top of the dash as in the later W107 SL's).

greetingz,
__________________
1990 300SL-24
1993 C250D
with a minor 600+k kilometer
www.MBenzNL.com
(the Netherlands)
Reply With Quote
  #7  
Old 03-21-2001, 07:12 PM
Registered User
 
Join Date: Jan 2000
Location: PA
Posts: 5,440
Mbenz,

I will take a look to see if I can find the sensor inlet where you said it might be. I already looked around the dash but possibly it is not as visible as the ones on my 300SDs. I never thought about looking around the dome light.

Thanks for your reply.

P E H
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
E320 16 PIN DTC Charts inc. pin 8, pin 14 cdanschwartz Tech Help 42 05-03-2016 12:06 PM
DIY page. Introduction to Resoldering Climate Control Unit BoostnBenz Diesel Discussion 92 11-26-2011 10:42 PM
1979 116 climate control fiasco/help DaveMcDonald Tech Help 1 12-11-2004 02:14 AM
300D Climate Control and Vacuum xander6 Diesel Discussion 3 08-30-2002 10:53 AM
300D Climate Control Schematic jerryk Tech Help 5 06-26-2000 05:37 PM



All times are GMT -4. The time now is 11:41 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