Diesel Chronicles

 Here is the link for Dale's superstorehttps://dalessuperstore.com/

Door was opening and closing by itself while driving . Diag we found that it had a bad mother board would close but did not open  along with switch  were bad . Also found that it had a bad momentary switch as well carbon track causing  the door to open unexpectedly

 Test post from Johnny PDF attached from OneDrive --block download set --Share with anyone - view only access in OneDrive Share settings when creating the following link PDF - 49 CFR

 At the Boston location today (06JUN2023) we discovered that a air bound or low aftertreatment fluid PSI will cause the "LOW DEF LEVEL" dash indicator and the low def red lamp on the gauge located on the tank AND Active Fault 1682 -  Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit Input Lines - Condition Exists  this was cleared a few times but was still coming back as active during engine operation. The root cause of this was air in the system or potentially a dirty filter. The solution was to run the In-Chassis non-air flush procedure which requires CUMMINS INSITE, change the dosing injector and DEF Filter. The in chassis non-air flush procedure can be found in section 011-058 Aftertreatment Diesel Exhaust Fluid Dosing Unit of the service manual. We did not have the specified CUMMINS bottle setup, in result we utilized a 1/4" ID hose and a funnel to gravity feed the system as the test was running. A short way to isolate the suction side is to disconnect the ...

  Attention All OTT Locations we found today that our Exhaust Gas Pressure port was blocked with carbon build up. This sensor is connected to a mounting block where a metal sensing line runs to the exhaust manifold. To fix the issue disconnect the metal sensing line and inspect for carbon build up, blow compressed air through it and to clean the carbon build up soak in diesel fuel. Then remove the mounting block and inspect the ports where the sensing line mounts and where the sensor screws in. Use a drill bit approx. 5/32" to clear out the ports upper and lower. Then soak in diesel fuel and blow out with compressed air. It was found that this dirty port was causing the fault. The sensor is still good and does not need to be replaced.

Notice to locations running the ISB6.7 CM2150 2009 model we encountered poor throttle response in turn replacing the turbocharger, intake manifold pressure sensor, and barometric pressure sensor (between turbo and air filter). Recommended action is to run the Engine State Monitor on road test via the Cummins INSITE program. Our team found a "Air Fuel Control Derate" caused from poor boost. From this we were able to troubleshoot the intake system and find the main cause. The air intake heater grid attached to the intake manifold and EGR Valve were caked with soot.