CM870 ghost derate

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(09-22-2022 )Rawze Wrote:  

(09-22-2022 )ads1 Wrote:  ...Any thoughts on why my turbo inlet temp is stuck at 59 degrees and turbo outlet (calculated) stuck at 400 and something? Cold or hot that’s what they show, never move. Inlet sensor is new genuine Cummins.

59-deg turbo inlet temp. is the default reading if the sensor is not plugged in.

many of those bad delete programs will bypass those signals so that some complete moron can install a manual turbo onto it. If it has the wrong program in it, or maybe a delete program then that may be why.


If u unplug the EGR valve, does it get a check engine light?.

I think you nailed it. I had a couple of minutes and unplugged both connectors at the EGR valve and no check engine light. So I’m stuck with paying Cummins $500 to reprogram my ECM or seeing if someone could walk me through how to do it myself with Insite. I’m sure I could research it enough to figure it out eventually, but I don’t have the time right now. Your thoughts?