tarlo Posted January 1, 2021 Report Share Posted January 1, 2021 Yesterday I installed a turbo speed sensor and upon completion found the sensor did not output any signal when idling. As I have a fury I have connected the sensor to a transducer to convert frequency to 0-5v. the transducer showed no input so I connected the sensor to an oscilloscope and found that the output just sat at 5v. I wired the sensor as per the picture attached. The sensor is a TE jaquet https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Data+SheetHMS_5_DSE_0805A1pdfEnglishENG_DS_HMS_5_DSE_0805_A1.pdfCAT-SPS0002 On the data sheet it states the sensor the detection range starts at 5000 rpm so I'm theorising I am not getting enough speed at idle to trigger the sensor to output a square wave. The car isn't in a state where I can drive it or rev it so I was wondering if anybody has come across this issue before . Matt Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 1, 2021 Report Share Posted January 1, 2021 Yeah I think the minimum speed may be your problem, I just a had a look at some logs I have from the Toyota FT60's (2L engine with very small turbo) and at their 1300RPM idle with the engine cold the turbo is only doing 7000RPM. Quote Link to comment Share on other sites More sharing options...
Yvo Posted January 3, 2021 Report Share Posted January 3, 2021 had the same on my rb26, you need more engine rpm to show you turbo rpm Quote Link to comment Share on other sites More sharing options...
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