
TROUBLESHOOTING AND ELECTRICAL SYSTEM
Troubleshooting Guide
2005 FE350 Gasoline Vehicle Maintenance and Service Supplement
Page 11-3
11
Loss of engine power, continued
Throttle linkage out of adjustment
Section 14 – Fuel System
Low cylinder compression
Section 13 – FE350 Engine
Spark plug failed
Section 13 – FE350 Engine
Restricted fuel flow
Section 14 – Fuel System
Torque converter is not backshifting
properly
Section 17 – Torque Converter
Spark plug fouls repeatedly.
Incorrect plug
Section 13 – FE350 Engine
Spark plug wire is damaged
Section 13 – FE350 Engine
Unsuitable fuel, or incorrect (rich) fuel
mixture
Section 14 – Fuel System
Ignition coil failed
Section 11 – Troubleshooting and
Electrical System
Test Procedures 14, 15, and 16
Dirt entering combustion chamber
Check intake system for leaks.
Section 14 – Fuel System
Rings are heavily worn, low cylinder
pressure
Section 13 – FE350 Engine
Carburetor floods.
Inlet valve or seat is leaking,
dirty, worn, or damaged
Section 14 – Fuel System
Float is damaged and filled with fuel
Section 14 – Fuel System
Float needle valve not functioning properly
Section 14 – Fuel System
Carburetor vent is clogged
Section 14 – Fuel System
Starter fails to operate.
Neutral lockout cam is in the wrong
position
Test Procedure 30 – Relay (Starter and
Neutral Lockout Circuits) on page 11-41.
Fuse is blown
Test Procedure 2 – Fuse on page 11-17.
Battery is dead
Test Procedure 1 – Battery on page 11-15.
Starter control circuit is not operating
Test Procedure 4 – Key Switch (Starter
Circuit) on page 11-19.
Starter/generator failed
Test Procedure 9 – Starter/Generator
(Starter Function) on page 11-23.
Starter solenoid failed
Test Procedure 7 – Solenoid on
page 11-21.
Accelerator pedal limit switch failed
Test Procedure 6 – Accelerator Pedal
Limit Switch on page 11-20.
Key switch failed
Test Procedure 4 – Key Switch (Starter
Circuit) on page 11-19.
Neutral lockout limit switch failed
Test Procedure 8 – Neutral Lockout Limit
Switch on page 11-22.
Loose or broken wire in starter/generator
circuit
Starter/Generator on page 12-1
Cylinder and/or crankcase flooded with fuel
Section 14 – Fuel System
Relay failure (key-start vehicle only)
Section 12 – Electrical Components
Troubleshooting Guide continued on next page...
TROUBLESHOOTING GUIDE
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION