This Dodge RAM 5.9L Cummins was a high mileage engine with 418k miles on the odometer and an unknown service history. The vehicle owner reported that the engine ran rough at all times, periodically the engine would run rougher and the check engine light would come on.
Diagnosis: Our Dodge RAM diesel technician found that the engine started easily, but ran rough at all speeds like it had a misfire on cylinder #5. When the engine computer error codes were checked and cleared the engine briefly ran somewhat smoother, but the misfire worsened when the check engine light quickly came back on.
Next, the technician tested for an electrical signal at each fuel injector electrical connector and found all injectors were receiving the correct signal from the fuel control computer. This also indicated there were no fuel injector wiring harness problems.
Then the electrical continuity of each injector was tested. Injectors 1, 2, and 3 all tested on the high side of the specifications indicating the injectors were getting old and worn, injectors 4 and 6 tested outside specified limits indicating they needed replacement, and injector 5 tested with no continuity indicating a failed injector.
Repair Recommendation: Considering the vehicle's high mileage our diesel technician recommended that all six fuel injectors be replaced.
Repair: fuel injector replacement, fuel filter replacement.
Outcome: After fuel injector replacement the engine idled smoothly and ran smoothly through the RPM range to full throttle. The owner reported easier starting in cold temperatures, less engine vibration and noise, and improved fuel mileage.
Dodge RAM Cummins 5.9L Fuel Injector Replacement Cost
The cost of Fuel Injector Replacement varies depending on the vehicle's year and diagnostic time. RepairPal lists a 2004 Dodge RAM Cummins 5.9L Fuel Injector Replacement Cost of $4,237 to $6,708, with a cost breakdown of 13% Labor and 87% parts.
Understanding this cost estimate
Each vehicle repair is unique and requires a diagnostic test. Additional related repair costs are not included in this price range. This price estimate is provided based on limited information and is subject to change based on the accuracy of the diagnosis and any required additional services or parts in tandem with the current service issue. This range does not include taxes and additional fees.
Contact State Street Auto Service for Dodge Ram Cummins diesel repair service near Ann Arbor, MI.