MSefi.com read only forum (Jan.15,2018)

Does anyone have the resistance spec on Bosch 0280130032 clt? 1995 940 B230FK.

Hello Otto,
Check page 51..53 of the Bosch sensor data sheet:
http://www.bosch.se/content/language1/d ... om_pdf.pdf

The last 3 digits do not quite match up, but I think (some else take a moment to confirm?) that those are usally for external form factor. In all cases listed, the resistance values are the same.

Hope this helps,
Charles.

Those five sensor there are very close. When the temperature is listed with a range of resistance, do I use the middle value of the resistance range as input in easytherm?

Hello Otto,
The resistance changes as temperature changes. Easytherm will require the 3 temperatures and the associated resistances along with the series resistor used to operate.

Look at:

viewtopic.php?t=4734

if you want to learn how MS reads temperature.

Here is the specification for your sensor:
http://www.bosch-motorsport.de/pdf/sens ... _M12-L.pdf

This is pretty much the same as the default values on Easytherm for Bosch sensors. You can tweak the numbers / temperatures to match what is in the table in the link above when you run easytherm.

0280 130 039 has the save values as 0280 130 032?

Hello Otto,
Yes they are the same.

Here is another data sheet,

http://apps.bosch.com.au/motorsport/dow ... rature.pdf

0 280 130 023 - 40 to + 130 A 1.0 M12 x 1.5 9
0 280 130 026 - 40 to + 130 A 1.0 M12 x 1.5 9
0 280 130 032 - 40 to + 130 A 1.0 M12 x 1.5 9
0 280 130 039 - 40 to + 130 A 1.0 M12 x 1.5 9

All have the same temperature / resistance characteristic curve. The link I posted earlier is easier to work with as it has the table included. The case is different for 0 280 130 032 versus 0 280 130 039 as one is for air and one is for water.

Just try it - use easytherm to generate an include file, load it up into megasquirt and use meagtune's real time variable display to see if the temperature seems reasonable with your sensor connected. Easytherm makes a look up table, if the table is wrong, all that will happen is that you will have an odd temperature displayed - get it sorted out before you run the engine. If the car is idle over night, the temperature should be close to the over night temperature.

Alternatively, you could remove the temperature sensor, let it go to room temperature (~25^C), measure the resistance and then place detector end of it in boiling water (~100^C) and measure the resistance. Those values should be very close to what is in the table.

Charles.

Ok, thank you.