ISB Archives

Troubleshooting Cummins ISB Diesel Engine Electrical Problems

One of our 2009 Cummins ISB diesel engines died on the road today. It doesn’t happen often but unfortunately on the way home the engine shut down like turning off the switch. Two mechanics went downtown to check it out and tried everything they could to get it going. Priming the fuel system didn’t make… Continue reading Troubleshooting Cummins ISB Diesel Engine Electrical Problems

Cummins ISB Diesel Engine In A School Bus The Perfect Marriage

I will not lie the Cummins ISB is the best diesel engine I’ve worked on that does not have nagging emission problems like their competitors. I should say what competitors? Not too many are left. International did not want to go with the SCR selective catalytic reduction in 2010 and decided to stick with Advanced… Continue reading Cummins ISB Diesel Engine In A School Bus The Perfect Marriage

Cummins ISB Engine Code EGR Valve

This EGR Valve fault code popped up and it caused a slight hesitation on acceleration which would make sense if the valve is open at the wrong time. The EGR funnels cooled exhaust coming from the EGR cooler into the intake system to cut down on emission levels. The code was 1896 EGR Valve Controller… Continue reading Cummins ISB Engine Code EGR Valve

Cummins Code 2636 VGT Actuator

This Cummins ISB diesel engine was running flawlessly for years. It’s a 2009 so seven years with a fairly decent service record is a bonus for the fleet. Eventually mechanical components do fail as most people know and this part was the VGT actuator. VGT stands for variable geometry turbocharger. I can tell you this…… Continue reading Cummins Code 2636 VGT Actuator

Cummins ISB Diesel Engine

The Cummins ISB diesel engine is a great piece of machinery and my first choice any day. It comes with the Allison 2500 series automatic transmission in our conventional buses and they work together extremely well. Those 2 components have given us minimal breakdowns. I shouldn’t say breakdowns more like minor inconveniences. The 250 horsepower… Continue reading Cummins ISB Diesel Engine

Cummins ISB Diesel Engine Code Repair

The Cummins ISB diesel engine is the most reliable diesel engine in the fleet. However they are not invincible and can act up once in a while. The operator came in and told us there was an amber light on the dash. Most descriptions of the issue are pretty good but it is a habit… Continue reading Cummins ISB Diesel Engine Code Repair