Page 1 of 1
BMW OIL temp sensor
Posted: Sat Sep 20, 2014 3:21 pm
by killerbee
I have problem with stock oil temperature sensor on bmw M5 S38B38 engine , it have 1 cable only , I connect it to the pin where the EMU software reat oil temperature but I do not think that it can work in this way , can it be connected somehow or I need other type of sensor ?
Re: BMW OIL temp sensor
Posted: Sat Sep 20, 2014 7:42 pm
by Jadzwin
Probably it is resisive sensor and it is grounded by engine block/head.
What you need to add pullup resistor to +5V.
The pullup resistor depends of the sensor characteristic Resistance/Temp
Re: BMW OIL temp sensor
Posted: Sat Sep 20, 2014 7:44 pm
by killerbee
Can you suggest oil temp sensor that works directly ?
Re: BMW OIL temp sensor
Posted: Sat Sep 20, 2014 7:47 pm
by Jadzwin
Most of sensors are resistive ones (like IAT or CLT).