MoTeC Global Forum

I want to install a booster pump inline with my water-oil cooling system, but I haven't found an option that can be driven from oil temp in the GPA package.

I would like the pump to be switched (low side) based on oil temp, to give me a little extra cooling capacity as the oil can get to 120*C if I am in traffic for a few laps. Others with similar cars have done similar but usually they just have it as a switch on the dash they can use if the oil temp is getting hot, but I don't want to have to think about that... and I have an ecu that can control this for me.

The GPA package has options for differential and transmission pumps, driven off their respective sensors.

From the looks of it, I can assign the transmission temp sensor as the same input (analogue voltage input 6) as the oil temp input and it'll just use the oil temp sensor, then I can just define the pump parameters which will switch the pump on and off.

Has any one else done something similar? Or is there another way I could do this?

Hi Plohl,

You can use either the Differential Temp/Pump or Transmission Temp/Pump functions to do this, as they do not have any interlinking to other functions in the ECU.

Thanks! I'll get that working before the next round.

This ended up needing a bit of a roundabout way to get it to work.

My original plan was to double up a resource (Analogue Temp 6 for example) so both the oil temp and the transmission temp would be using the same sensor and sensor pin. The GPA package wouldn't let me do this though

After venting some frustrations and some food, a mate and I discussed other solutions - Splice the sensor wire to another input, run another sensor, use an aux output and just have the pump switched on based on RPM etc etc.

In the end though, I sent the Oil Temp back to the ecu, using the dash (C125) and CAN. The transmission temp input is looking at the CAN output from the dash, and the pump control is based on that. The temp resolution is only to 1*C, but that's fine for the what I need. Not sure if this is because of how I have the CAN transmit set up, or other factors.