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 04-24-2002, 03:45 PM
jsmith's Avatar
Ronin
 
Join Date: Aug 2001
Location: At Sea
Posts: 1,729
calling Barrie aka "the thermosensor meister"

with the warmer, humid weather my external temp readout is fading in and out again. i figured it's time for some minor surgery on that thermosensor by the license plate. so i dug up those old threads and was pleasantly surprised to find part numbers for the replacement sensor. went on to the newark electronics site and ordered one (did i say one, i meant three!!! - but they wouldn't let me change my order after i submitted it ). the part came today and it wasn't exactly what i was expecting. i mean those leads are thin! so, a couple of questions:

- i have a 100W soldering gun and a 40w iron - use the iron right?
- the smallest shrink tubing i have is what's shown in the picture, should i butt it right up to the head?
- where can i get conductive paste / wax - is that readily available?

cheers
Attached Thumbnails
calling Barrie aka "the thermosensor meister"-thermosensor.jpg  
__________________
joE
1993 300e-2.8
- gone now <sigh>
"Do not adjust your mind, it's reality that's malfunctioning"
http://banners.wunderground.com/bann...L/Key_West.gif
Reply With Quote
  #2  
Old 04-24-2002, 08:19 PM
Registered User
 
Join Date: Jan 2001
Location: Santa Clara, CA
Posts: 427
Use the lowest wattage iron, put the shrink tubing right up to the head and later cover anything showing with good quality tape. BE SURE to put a heat sink, (a small alligator clip, a hemostat, whatever), on the leads to the thermistor before soldering and do it as fast as possible so you don't overheat it. Thermal compound can be purchased at any Radio Shack.
Good luck!
__________________
'76 240D-Sold
'78 240D-Sold
'85 300 SD, 165K-Sold
'88 300 TE, 165K-Sold
'64 Porsche 356C Cabriolet
'86 560SL 124K Miles
'94 320E Wagon, 74K Miles-128K Miles JUNKED
'06 E350 Wagon, 84K Miles
Reply With Quote
  #3  
Old 04-24-2002, 11:35 PM
jsmith's Avatar
Ronin
 
Join Date: Aug 2001
Location: At Sea
Posts: 1,729
is there a way to open up the old probe without damaging the tube? i was going to slit the tube covering and i was trying to get the tip off but wasn't successful. i remembered that i have some thermal paste that i used on a CPU - heatsink contact so i'll use that. RS just gave me the usual blank looks and i didn't feel like checking out their entire inventory (yet again)...

thanks

ps. a 356? cool! how about some pix?
__________________
joE
1993 300e-2.8
- gone now <sigh>
"Do not adjust your mind, it's reality that's malfunctioning"
http://banners.wunderground.com/bann...L/Key_West.gif
Reply With Quote
  #4  
Old 04-25-2002, 01:04 PM
Registered User
 
Join Date: Jan 2001
Location: Santa Clara, CA
Posts: 427
Don't know how to get an original out as I have only worked on already ripped apart ones.
RS calls it: "Heat Sink Grease", p/n 276-1372, $1.99. Your stuff will work just fine. In fact, my probe is just hanging in space behind the bumper.
My 356C is currently buried behind and under all the winter crap in the garage and is utterly filthy. I'm very ashamed as it is a very nice car.
__________________
'76 240D-Sold
'78 240D-Sold
'85 300 SD, 165K-Sold
'88 300 TE, 165K-Sold
'64 Porsche 356C Cabriolet
'86 560SL 124K Miles
'94 320E Wagon, 74K Miles-128K Miles JUNKED
'06 E350 Wagon, 84K Miles
Reply With Quote
  #5  
Old 05-02-2002, 09:18 AM
jsmith's Avatar
Ronin
 
Join Date: Aug 2001
Location: At Sea
Posts: 1,729
i dug this up because i was able to confirm that my reading starts to fade in and out when the weather is wet. the past few days when it was warm and dry, the reading was solid. regardless of whether it is fading in & out or solid, the reading is correct. could this be indicative of a corroded / loose connection somewhere? where exactly does the sensor cable hook up "behind the fuse box"? i don't want to slice open the temp probe and replace it only to find that it wasn't the problem...
__________________
joE
1993 300e-2.8
- gone now <sigh>
"Do not adjust your mind, it's reality that's malfunctioning"
http://banners.wunderground.com/bann...L/Key_West.gif
Reply With Quote
  #6  
Old 05-07-2002, 10:44 AM
jsmith's Avatar
Ronin
 
Join Date: Aug 2001
Location: At Sea
Posts: 1,729
that wasn't it

just replaced the thermistor. split the tube, excised the old one and soldered the new one in. it's still fading in and out - i suspect a bad connection at the harness junction. if only someone could tell me where it is (by the fusebox somewhere?)...
__________________
joE
1993 300e-2.8
- gone now <sigh>
"Do not adjust your mind, it's reality that's malfunctioning"
http://banners.wunderground.com/bann...L/Key_West.gif
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 11:42 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