Is a Cummins ISX EGR Delete Legal? What Owners Should Know
An EGR delete on an on-road Cummins ISX is illegal under federal law in the United States, regardless of which state you operate in. Section 203(a)(3)(A) of the Clean Air...
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Is a Cummins ISX EGR Delete Legal? What Owners Should Know -
How to Improve Cummins X15 Fuel Mileage: 8 Proven TipsHow to Improve Cummins X15 Fuel Mileage: 8 Proven Tips
A well-maintained Cummins X15 averages 6.5 to 8.0 MPG on loaded highway duty, and two problems account for most of the gap between that range and what underperforming trucks actually...
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How to Test a Fan Clutch on a Diesel Truck: Step-by-StepHow to Test a Fan Clutch on a Diesel Truck: Step-by-Step
A diesel truck fan clutch can be tested three ways: a spin test that works on any type, an air-pressure test for air-engaged clutches, and a resistance and signal test...
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Cummins N14 vs ISX: Which Engine Is More Reliable?Cummins N14 vs ISX: Which Engine Is More Reliable?
The Cummins N14 has a stronger long-term reliability reputation than the ISX, with a typical useful life of 800,000 to 1,200,000 miles on a well-maintained truck — compared to 600,000...
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Fan Clutch Replacement Cost for Semi Trucks: Full BreakdownFan Clutch Replacement Cost for Semi Trucks: Full Breakdown
A Semi truck fan clutch replacement costs between $400 and $1,050 in total, covering the part and labor. The part alone runs $250 to $700 depending on whether you choose...
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Freightliner Cascadia ECM Problems: Symptoms and FixesFreightliner Cascadia ECM Problems: Symptoms and Fixes
The most common Freightliner Cascadia ECM problems are sudden power derate, loss of scanner communication, and multiple unrelated fault codes firing at the same time, with SPN 625, SPN 168,...
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Cummins ISX ECM Reprogramming: What It Costs and When You Need ItCummins ISX ECM Reprogramming: What It Costs and When You Need It
Cummins ISX ECM reprogramming costs between $150 and $400 depending on who does it, and you need it whenever you install a used module, update engine calibration, or clear a...
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Detroit DD15 ECM Problems: Symptoms, Codes and ReplacementDetroit DD15 ECM Problems: Symptoms, Codes and Replacement
The most common Detroit DD15 ECM problems are power loss or a derate, hard starting, random fault codes, and a complete loss of scanner communication with the module. The most...
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Cummins ISX15 Aftertreatment Parts: DPF, DEF and NOx SensorsCummins ISX15 Aftertreatment Parts: DPF, DEF and NOx Sensors
The Cummins ISX15 aftertreatment system cleans the exhaust using four main parts: the diesel particulate filter (DPF) that traps soot, the DEF system that sprays diesel exhaust fluid, the SCR...
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Cummins ISX15 Sensor Locations and Replacement GuideCummins ISX15 Sensor Locations and Replacement Guide
The Cummins ISX15 uses more than a dozen sensors across the engine, intake, exhaust, and emissions systems, and the most commonly replaced are the coolant temperature, oil pressure, boost pressure,...
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Cummins ISX15 Fan Clutch Replacement: When and Which OneCummins ISX15 Fan Clutch Replacement: When and Which One
A Cummins ISX15 fan clutch should be replaced when it stops engaging and lets the engine overheat, stays locked on and roars constantly, or develops a worn, noisy bearing. The...
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How to Source Hard-to-Find Diesel Parts for Older TrucksHow to Source Hard-to-Find Diesel Parts for Older Trucks
A shop we work with spent three weeks chasing a single ECM for a 2006 Cummins QSB. Every dealer search came back the same way: discontinued, discontinued, discontinued. Turns out...
