Tuesday, April 13, 2010

Field trouble shooting

This are the case on automobile I think it can help you to easily recognize or gives you idea to trouble shoot the problem.
Ignition system:
Symptom Suspect area Remedy
Engine will not start or is hard to start(Crank Ok) =Ignition lock switch.

=Ignition coil.

=Spark plug.

=Ignition wiring or disconnected.
=Inspect ignition lock switch,or replace as required.
=Inspect ignition coil or replace as required.
=Inspect spark plug or replace as required.
=Repair wiring or replace as required.
Rough idle or stalls =Ignition wiring.

=Ignition coil.
=Repair wiring or replace as required
=Inspect ignition coil or replace as required.
Engine hesitates/poor acceleration =Spark plugs and spark plug cable .
=Ignition wiring.
=Inspect spark plug/ cable or replace as required.
=Repair wiring or replace as required.
Poor acceleration =Spark plug and spark plug cable =Inspect spark plug/ cable or replace as required.
Charging System:
Symptom Suspect area Remedy
Charging warning indicator does not light with ignition switch “ON” and engine off. =Fuse blown..
=Light burned out.
=Wiring connection loose.
=Electronic voltage regulator.
=Check fuses.
=Replace light.
=Tighten loose connection.
=Replace voltage regulator.
Charging warning indicator does not go out with engine running.
(Battery requires frequent recharging.
=Drive belt loose or worn.
=Battery cable loose / corroded or worn.
=Electronic voltage regulator.
=Adjust belt tension or replace belt.
=Tighten loose  connection.
=Replace voltage regulator.
Overcharge =Electronic voltage regulator.
=Voltage sensing wire.
=Replace voltage regulator.
=Repair or replace wiring.
Discharge =Drive belt loose or worn.

=Wiring connection loose or shirt circuit.
=Electronic voltage regulator or alternator.
=poor grounding.
=Worn battery.
=Adjust belt tension or replace belt tension.
=Inspect wiring connection, repair or replace wiring.
=Replace voltage regulator or alternator.
=Inspect ground or repair.
=Replace battery.

Starting System:

Symptom Suspect area Remedy
Engine will not crank =Battery charge low.
=Battery cables loose, corroded or worn out.
=Transaxle range switch(vehicle w/ automatic transmission only)
=Fuse blown.
=Starter motor faulty.
=Ignition switch faulty.
=charge or replace battery.
=Repair or replace cables.

=Refer to TR group Automatic transaxle.
=Replace fuses.
=Replace.
=Replace.
Engine crank slowly =Battery charge low.
=Battery cables loose, worn out.
=Starter motor faulty.
=Recharge or replace battery.
=Repair or replace cables.
=Replace.
Starter keeps running. =Starter motor.
=Ignition switch.
=Replace.
=Replace.
Starter spins but engine will not crank. =Short in wiring.
=Pinion gear teeth broken or starter motor.
=Ring gear teeth broken.
=Repair wiring.
=Replace.

=Replace flywheel or torque converter.
more stdy

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