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general information

To prevent air pollution and products of incomplete combustion fumes, as well as to maintain a high level of engine performance and reduce fuel consumption of modern cars equipped with systems reduce emissions. These include the following:

• The system controlled crankcase ventilation (PCV)
• EVAP System (EVAP)
• Exhaust gas recirculation (EGR)
• Oxygen sensor _(O 2)
• Catalytic Converter (TWC)
• The electronic control module (PCM) with information sensors

In the section of this chapter includes general description of the construction and operation of these systems, and procedures for verification of their status and functioning, lying within qualification of the average mechanic-fan.

Before coming to the conclusion that rejection of emission control carefully check if the power supply systems and ignition. Diagnosis of some of the devices of systems of decrease in toxicity requires special equipment and tools, as well as the availability of experience of this kind of work. If in the course of maintenance procedures have problems or there is the need to use special equipment, consult the dealership office. The most common cause of failure of systems of decrease in toxicity is loose or broken wiring and hoses, so these checks should be made in the first place (see. Illustration below).

However, the above does not mean that the repair and maintenance of components of systems of decrease in toxicity is a very difficult task. You can own, using a conventional set of plumbing and setup tool to perform many of the checks and procedures of routine maintenance of the system components in the home.

As for primary care systems, reducing the emissions covered by the warranty of the manufacturer, check on their conditions with the representative of dealer branch of car sales.

Connection scheme of vacuum system components reduce emissions models with engines of 4.0 liters in 1993 and 1994 Vol.

Connection scheme of vacuum system components reduce emissions models with engines of 5.2 liters in 1993 and 1994 Vol.

Connection scheme of vacuum system components reduce emissions models with engines of 4.0 liters in 1995 MY. (not the California model)

Connection scheme of vacuum system components reduce emissions models with engines of 4.0 liters in 1995 MY. (California model)

Connection scheme of vacuum system components reduce emissions models with engines of 5.2 liters in 1995 MY.

Particular attention should be given special precautions. It should be noted that the illustrations of the many systems may differ from the actual taking place on your car situation. Such differences are explained insertion car manufacturers constantly modifications within the same model.

Information label of systems of decrease in toxicity of the fulfilled gases (VECI) is located in the engine compartment of the car. The label contains specific data and information on the settings. When performing maintenance on the system in the event of discrepancies preference should always be given according to label VECI.

VECI label fixed to the radiator support and provides information on adjusting the idle speed, ignition timing, location node systems of decrease in toxicity, lining of vacuum lines, etc.

Next to the label on all models VECI nameplate attached to the connection diagram of the vacuum system components.