PeachParts Mercedes-Benz Forum

PeachParts Mercedes-Benz Forum (http://www.peachparts.com/shopforum/index.php)
-   Tech Help (http://www.peachparts.com/shopforum/forumdisplay.php?f=1)
-   -   Temp Sending Unit Testing 380sl (http://www.peachparts.com/shopforum/showthread.php?t=246895)

jimsclub 03-07-2009 12:03 PM
Temp Sending Unit Testing 380sl
 
How do I test a water temperature sending unit on a 1984 380sl.

mbdoc 03-09-2009 08:59 AM
There are 3 coolant temp sensors on that car..

Which one?

jimsclub 03-09-2009 12:02 PM
The one that runs to the temp guage in the cluster!

Mike D 03-09-2009 12:18 PM
Use an ohmmeter. "Cold" should be about 256 ohms, "operating" temperature should be about 75 ohms.

Arthur Dalton 03-09-2009 01:35 PM
Quote:
Originally Posted by jimsclub (Post 2133883)
The one that runs to the temp guage in the cluster!

OHM 110 = 60C
67 = 80C
38 = 100C

I use the 38 ohm as that range is the most accurate b/c it is a neg Thermistor and 100C is easy to read.
Have one in teh tool box with the plug right on it for quicky testng both gauge and sensor.

tinypanzer 03-10-2009 12:03 AM
I posted the chart here somewhere. Do a search!


All times are GMT -4. The time now is 06:29 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2026, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website