4. Operate the engine under similar load conditions. Check the fuel system for restrictions,
primary filter, and fuel tanks for foreign objects blocking the fuel supply. Also, check the
air system. Utilize the DDR snapshot feature.
5. Operate the engine at this temperature while attempting to duplicate the problem. Use
the snapshot feature on the DDR.
6. If possible, troubleshoot the problem in this temperature range.
7. If the problem seems to occur during or after the engine is subjected to rain/spray washing,
thoroughly inspect the connectors for moisture entry.
8. If the problem occurs at a specific vehicle speed, check the parameters affecting vehicle
speed to verify they are programmed close to the vehicle speed where the problem occurs.
Check Vehicle Speed and watch the DDR (snapshot) for changes to see if the pulse wheel
(VSS signal) is loose.
9. If the problem occurs at a specific engine r/min, unplug the oil, coolant, and air
temperature sensors, and note any changes to the problem. Gather this data and contact
Detroit Diesel Technical Service.
All information subject to change without notice.
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION