PCM 2003 5.0L MPI, Owner'S Operation And Maintenance Manual

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L510010-03
C.C.
TROUBLESHOOTING - 14
Engine performance complaints usually fall under one of the basic headings listed in the Troubleshooting Guide. When a
problem cannot be easily diagnosed, consult a PCM Engines Servicing Dealer for assistance.
Malfunction Possible Cause Corrective Action
Engine will not crank with the Problem with the engine Contact PCM Engines
starter motor, or cranks slowly. management system. Dealer.
Battery switch turned OFF (if Turn the battery switch ON.
equipped)
Remote control not in Neutral Position the remote control exactly
NOTICE: Battery voltage position. in Neutral.
must be AT or ABOVE 10
volts while the engine is cranking Blown the ignition fuse or open Replace the fuse - reset circuit
or the engine management system circuit breakers. breakers.
will not function.
Loose and/or dirty wiring Check the battery cables and
connections. starter circuit wiring. Clean
and tighten all connections.
Repair or replace the damaged
wiring.
Dead Battery Recharge, test and replace as
necessary.
Engine Cranks - will not Improper starting procedure. Refer to “STARTING
start or is hard starting. ENGINE” in the OPERATING
INSTRUCTIONS section.
NOTICE: Battery voltage No fuel - empty fuel tank Check the fuel tank level - fi ll
must be AT or ABOVE 10 tank(s). Open shut-off valve(s).
volts while the engine is cranking
or the engine management system
Plugged fuel fi lters.
will not function. No fuel to the throttle body (TBI) Plugged or kinked fuel lines or
or the injectors (MPI) plugged fuel-tank vent.
Faulty fuel pump - check
electrical connections.
Faulty anti-siphon valve.
Engine fl ooded Open the throttle 100% and crank
the engine. When the engine starts,
immediately return the throttle to
1000 RPM.
Ignition system malfunction Contact PCM Engines Dealer.
Contaminated fuel Check fuel for water or other
contamination. If contaminated,
drain and clean the fuel system.