Engine Speed Surges In PTO or Cruise Control
ENGINE SPEED SURGES IN PTO OR CRUISE CONTROLPOSSIBLE CAUSES
- Possible causes
Diagnostic Test
1. POSSIBLE CAUSES
This is a list of possible causes:
Check for any TSBs for ECM calibration updates that my apply.
Fuel filter plugged.
Fuel Inlet restriction.
Fuel line kinked or restricted.
Fuel return passage or fuel return line kinked or restricted.
Accelerator pedal is restricted or out of calibration.
Vehicle Speed sensor (VSS) and/or circuit malfunction.
Transmission gear shift.
Check vehicle brakes for dragging, transmission malfunction, cooling fan operation cycle time and engine driven devices.
Moisture in harness connectors or corroded terminals.
ECM control, PTO speed governor.
Engine overload.
Air Inlet restriction
View repair
Repair
Repair as necessary. Refer to Service Information for the related symptom(s).
Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Powertrain Verification Test - Ver 1