CM870 Turbocharger Speed Sensor
10-10-2020, (Subject: CM870 Turbocharger Speed Sensor ) 
Post: #1
CM870 Turbocharger Speed Sensor
ISX CM870 with intermittent code 595, Turbocharger Speed High. Usually get the CEL coming off of idle at a stop or after descending a hill when power is added. It just illuminates for a second or two then goes away. It didn't illuminate the light for the first bunch of times but I saw it on Insite. I haven't recorded the parameters using Insite but I could if needed.

I checked the plugs, harness (ECM to sensor) and the turbocharger speed sensor; they all check OK. I'm thinking of replacing the turbocharger speed sensor, 4032068. I see some aftermarket sensors for less than $100 or the Cummins part is around $230. Suggestions?

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CM870 Turbocharger Speed Sensor - hypoxia - 10-10-2020

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