I was trying to look into getting a 17point curve mapped for the CLT sensor and i noticed that although for VEMS users most people use the NTC 256/1900 patch and it works fine+ corresponds to the 51 bin on the A/C, i got some puzzling results.
I was under the impression that ECU measures coolant temperature from the sensor at the back of the block(head? cant remember) the white one with part number 035919369M
i measured the ohms of that sensor from various different temperatures to get a 17 point curve and although difficult i managed to get some kind of figures. However, when you put that into vems:
1) it does not correspond at all with the 51bin on the AC
2) it rises very high very quickly and gives coolant temperatures out of proportion.
So that is definitely wrong...
the other thing however was the fact that the AC 51 bin sticks to 50C and only starts counting when the coolant's temp is above 50C. I know however that the above sensor 035919369M is used for the cold starts, and so does that mean that the 51bin on the AC does not look at that sensor but something else? If so, then which sensor does it look at???
I was under the impression that ECU measures coolant temperature from the sensor at the back of the block(head? cant remember) the white one with part number 035919369M
i measured the ohms of that sensor from various different temperatures to get a 17 point curve and although difficult i managed to get some kind of figures. However, when you put that into vems:
1) it does not correspond at all with the 51bin on the AC
2) it rises very high very quickly and gives coolant temperatures out of proportion.
So that is definitely wrong...
the other thing however was the fact that the AC 51 bin sticks to 50C and only starts counting when the coolant's temp is above 50C. I know however that the above sensor 035919369M is used for the cold starts, and so does that mean that the 51bin on the AC does not look at that sensor but something else? If so, then which sensor does it look at???