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OBD II
TIPS
The following two paragraphs
of information were taken from an article written by Larry
Carley.
"Anyone who
repairs late-model vehicles today for a living knows that diagnosing
complex emissions and driveability problems is not as simple as
reading a code and replacing a part. OBD II is a great system that
has a tremendous amount of self-diagnostic capability, but it only
identifies faults in particular circuits or systems. It does not
tell you which component to replace. That can only be
determined after doing additional diagnostic work to isolate the
fault.
Some problems such as misfires and
evaporative emissions leaks can be very challenging to nail down.
Misfires can be caused by ignition problems, fuel problems or
compression problems. The underlying cause might be fouled spark
plugs, bad plug wires, a weak ignition coil, dirty injectors, a
shorted or open injector, low fuel pressure, a vacuum leak, a leaky
head gasket, burned exhaust valve or a camshaft with a bad lobe.
No simple plug-in diagnosis will give you the answer
until you do a lot of other checks."
BUT NOW THERE IS
THE SparkPlug SENSOR.
For the Full Article Please Click
Here --> OBD II
Diagnostic TIPS
Before Using
Any OBD II Diagnostic Tool it is
RECOMMENDED that you:
1. Make sure the air filter
is clean and in good condition. Make sure all air filter ducts are
properly connected. Check the air filter ducts for holes, rips
or cracks.
2. Make sure all engine belts
are in good condition, Check for craced, torn, brittle, loose or
missing belts.
3. Make sure mechanical
linkages to engine sensors (throttle, gearshift position,
transmission, etc.) are secure and properly connected. See
your vehicle's service manual for locations.
4. Check all rubber hoses
(radiator) and steel hoses (vacuum/fuel) for leaks, cracks, blockage
or other damage. Make sure all hoses are routed and connected
properly.
5. Make sure all spark plugs
are clean and in good condition, check for damaged, loose,
disconnected or missing spark plug wires.
6. Make sure the battery
terminals are clean and tight. Check for corrosion or broken
connections. Check for proper battery and charging system
voltages.
7. Check all electrical
wiring and harnesses for proper connection. Make sure wire
insulation is in good condition, and there are no bare
wires.
8. Make sure the engine is
mechanically sound. If needed perform a compression check,
engine vacuum check, timing check (if applicable), etc.
The above
recommendations are an excerpt from the Operations Manual
of a popular OBD II Diagnostics Tool.
Thank-you for
your interest and your patience. The SparkPlug SENSOR is
Excellent for Racing Applications! |
