have car diagnostic tools

2017/10/8 

These days, cars and trucks are more complex than ever.
Not only are they jam packed with all of today’s most advanced
mechanical components and features, but all of these sophisticated bits
of machinery are all interconnected via computerized networks of
interrelated car self diagnostic tools. These networks can be very
useful in testing and diagnosing problems with your vehicle- but only if
you have the right equipment. A lot of times, all this extra
sophistication can seem like a great hassle- especially if you’re
accustomed to the good old days of muscle-car simplicity where you just
replace the part and fire it up. Well, for better or worse, those days
are gone.


The good news is there’s plenty of Automotive diagnostic tools
available that- with a little bit of time in research- you can learn to
perform complex diagnostic functions with that will give you a lot more
power over the ins and outs of your car or truck than you would have
had otherwise.


These tools will give you the ability to figure out what is going on
with your modern computerized vehicle, so that you can get it fixed and
get back on the road.


1. Obd2 Scanner


An Obd2 scanner is a diagnostic system that allows onboard computers
in cars and trucks to tell you what’s wrong with the vehicle. This car
diagnostic tool is used for a range of self-diagnostic and reporting
purposes. Unlike the earlier, OBD-I system, the Auto code reader
uses the same code designations, communication protocols, and
connectors for cars made by all major manufacturers. The standardization
has made the previous Obd1 almost completely obsolete.


2. Ignition Tester


Also known as a spark tester, this tool is absolutely indispensable
for anything that relies on spark plugs- that means your car. Any time
an engine won’t start, it’s possible that the reason is that there is no
spark coming from the spark plug to get the engine started. An ignition
tester allows you to diagnose the problem so that you don’t go all
around your car solving every other problem whether you need to or not.


3. Airbag Tester


As you can imagine, it could be quite problematic to have a
non-functional air bag and not know about it until the moment you need
it. And naturally, testing your airbag by whacking your bumper with a
rubber mallet is not ideal. Fortunately, there is a tool that can tell
you whether or not all of the electronic components of your airbag
system are working correctly without setting the safety device off.


4. Fuel Pressure Tester


Like a problem with your spark plug, a problem with low fuel pressure
can cause your car or truck to fail to start- and if you can’t diagnose
the problem directly, then you may have to work on several different
things before finally finding the problem. A fuel pressure tester tells
you where your vehicle’s fuel pressure is at, whether it’s too high or
two low, enabling you to solve the problem straight away.


5. Timing Lights


A timing light is a special automotive stroboscope that mechanics use
to set the ignition timing of internal combustion engines that are
equipped with a distributor. Modern vehicle engines require timing
lights to scan ignition timing accurately so that the timing can be
adjusted to the optimal range for your vehicle.


6. Emission Analyzer


In most states, drivers are required to have their Auto Repair Software
checked for proper exhaust emissions before the vehicle can be tagged
and allowed to drive legally on public roads. Even if you are fortunate
enough to live in a part of the country where vehicle emissions are not
regulated, it still might be good for your conscience to have your
emissions tested and adjusted accordingly. These devices are inserted
into the exhaust pipe and, in addition to checking your emissions- they
can also be used to diagnose a whole host of problems. It can also play
an important role in certain safety checks, help with engine tuning, and
certain kinds of repairs.


7. Vacuum Tester


A vacuum test is among the simplest diagnostic tools a mechanic can
have. With a simple gauge, anyone can gain valuable insight into vacuum
leaks, low compression, incorrect timing, and sticking valves just to
name a few. You will need to know the vacuum specifications for your
engine, and bear in mind that these gauges are adjusted for sea level.
That means for every 1,000 feet your location is above sea level, you
will need to subtract an inch of vacuum. The simplest check to perform
is a running vacuum test. Simply start the engine and let it reach
normal operating temperature. Find a vacuum port and connect the gauge.
The Heavy Duty Scanner
should be on the manifold or below the carburetor. It shouldn’t be on
the air cleaner, high on top of the carburetor, or on any of the
emissions control components



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What is a Car Code Reader

2017/10/1 


A car code reader is one of the simplest car diagnostic tools that you’ll find. These devices are designed to interface with a car’s computer and report trouble codes in a very no-frills sort of way. Cars and trucks that were built prior to 1996 require specific, proprietary OBD-I code readers, and newer vehicles use universal Auto code reader. This type of car code reader is typically inexpensive, and some parts stores and shops will even read your codes for free.
How Does a Car Code Reader Work?

Computer controls started to show up on cars in the late 1970s and early 1980s, and these systems rapidly grew in complexity. Even very early computer controls included basic “on board diagnostic” functionality, and these early, OEM-specific systems are collectively referred to as OBD-I. In 1995, for the 1996 model year, automakers around the world started transitioning toward the universal OBD-II standard, which has been in use ever since.

Both OBD-I and OBD-II systems work in essentially the same way, in that they monitor a variety of sensor inputs and outputs. If the system determines that anything is out of spec, it sets a “trouble code” that can be used in diagnostic procedures. Each code corresponds to a specific fault, and there are also different types of codes (i.e. hard, soft) that represent both ongoing and intermittent problems.

When a trouble code is set, a special indicator on the dashboard typically lights up.

This is the “malfunction indicator lamp” and it essentially just means that you can hook up a car code reader to see what the problem is. Of course, some codes won’t cause this light to turn on.

Every OBD system has some type of connector that can be used to retrieve codes. In OBD-I systems, it is sometimes possible to use this connector to check codes without a car code reader.

For instance, it’s possible to bridge GM’s ALDL connector and then examine the blinking check engine light to determine which codes have been set. In a similar fashion, codes can be read from OBD-I Chrysler vehicles by turning the ignition key on and off in a specific pattern.

In other OBD-I systems and all OBD-II systems, trouble codes are read by plugging a car code reader into the OBD connector. This allows the code reader to interface with the car’s computer, pull the codes, and sometimes perform a few other basic functions.
Using a Car Code Reader

In order to use a car code reader, it has to be plugged into an OBD system. Each Heavy Duty Diagnostic Tool has its own connector, which can be located in a wide variety of different of places. These connectors are often found under the hood in the vicinity of the fuse box, but they may be located under the dash or elsewhere. In vehicles that were built after 1996, the OBD-II connector is typically located under the dash near the steering column. In rarer cases, it may be located behind a panel in the dash, or even behind an ashtray or other compartment.

After the OBD socket has been located and hooked up to, the car code reader will interface with the car’s computer.

Simple code readers are actually able to draw power through an OBD-II connection, which means that plugging the reader in may actually power it up and turn it on as well. At that point, you will typically be able to:

1.Read and clear codes
2.View basic parameter IDs
3.Check and possibly reset readiness monitors

The specific options vary from one car code reader to another, but at the bare minimum you should be able to read and clear codes. Of course, it’s a good idea to avoid clearing the codes until you have written them down, at which point you can look them up on a trouble code chart.
Car Code Reader Limitations

Although car code readers are great at providing you with a jumping off point for your diagnostic procedure, a single trouble code can have any number of different causes.

That’s why professional diagnostic technicians typically use more expensive scan tools that come with extensive knowledge bases and diagnostic procedures. If you don’t have that sort of tool at your disposal, then you can check out basic trouble code and troubleshooting information online.
ELM327 Vs Car Code Readers

ELM327 scan tools are an alternative to basic car code readers. These devices use ELM327 technology to interface with your vehicle’s OBD2 vehicle diagnostics, but they don’t have any built-in software, display, or anything else that a traditional code reader has. Instead, these devices are designed to provide an interface between a tablet, smart phone, laptop, or other device, and your car’s computer. The most basic freeware will allow you to use an ELM327 scan tool and your phone as a basic code reader, while more advanced software will provide you with a more powerful interface.


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