Adam Cooper Posted October 8, 2022 Report Share Posted October 8, 2022 G4X XtremeX VL Commodore RB30 Hi, I am having problems with the readings coming from my Bosch 10bar pressure/temp sensor. The temp side is working, but reading ~50°c at ambient. I am using it to measure oil pressure/temp. I am using the std Bosch NTC as the calibration. The pressure side is not working at all, with the engine off I get 0.14v which does not change once it’s running and I have confirmed pressure with a different sensor/gauge. Unplugged i get 0.02v so it’s reading something. Before I rewired most of the engine, the original ECT sensor was reading correct, but now it’s about ~10-15°c cooler than what it should be. I am running an e throttle using FG Falcon pedal and TB and the APS sensors continually go out of sync. The pedal is a used one that was supposedly “good”. Sometimes the APS reading will increase from 0 to ~10% over a 15min period without touching the pedal. I am wondering if this is all related to a 5v issue or if they’re all separate problems. Any help would be appreciated. Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 8, 2022 Report Share Posted October 8, 2022 You can see the 5V output voltage in the runtimes screen, ecu status tab to confirm that is ok. The pressure sensor output shouldnt go below 0.5V, so 0.14V would suggest a wiring issue. Since it is showing a voltage in the ecu that would suggest the ecu end or the wiring is ok, there is something wrong at the sensor end. Pinout is incorrect or it doesnt have 5V. In your screenshot above AN Temp3 is showing 2.10V, which would be roughly 55°C using the bosch NTC calibration. If only the APS is drifting but TPS, MAP etc is all still reading correctly then it cant be a 5V supply issue. Quote Link to comment Share on other sites More sharing options...
Adam Cooper Posted October 22, 2022 Author Report Share Posted October 22, 2022 Thanks for the response and sorry for the late reply, it did end up being a wiring issue, a couple in fact. All sorted now Quote Link to comment Share on other sites More sharing options...
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