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Does anyone know how much the resistor is on the temperatur time switch 35Cel for cold start injector should be?

I have 3 of theese, one brand new one which I have used in the car, and has been working just fine until recently. I'm having problems starting the car when cold.
So I replaced this with one of the 2 old I have, but they have different ohm. One has 220 ohm, and the other one has 50 ohm.
I tried with the 220 ohm unit, and the car start at once, so I guess that one is in working condition. I haven't tried the 50 ohm unit.

But can anyone tell how much the ohm should be?

50ohm unit



The new one, which isn't working anymore.



It's a German stamped Bosch unit. Are all new Bosch items so poorly made theese days?

It is a switch, not a temperature sender. Test instructions from the factory manual:

Jeroen wrote: Wed May 21, 2025 10:03 pm It is a switch, not a temperature sender. Test instructions from the factory manual:

Thanks, I found the chapter in my service manual, will check it out today.
But my new Bosch unit is broken, 100% sure of that. Since 1 of the pin is ground, and there is no contact through the pin to ground. I will test both my old units and see how they work. But the car starts after running the starter for about 3 seconds, not sure if that is abit long time, or is it normal when engine has cooled down over night.

i have one..50 ohm at 20°C....
for sale...on ebay