add to favorites contacts sitemap
REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Nissan Maxima QX (1993 release)

general info. full specifications. diagnostics. hints. tips. tricks
Nissan Maxima QX
Home
 
Nissan
Maxima QX
Introduction
Operating Instructions
Adjustment and routine maintenance
Engine
System of cooling, heating
The power supply system and release
Electric motor
Engine Control Systems
general information
System of onboard diagnostics (OBD) - a principle of functioning and codes of malfunctions
Removal and installation RSM
Check of the state, replacement and adjustment of the throttle position sensor (TPS)
Check and replacement of the gauge measuring the mass air flow (MAF)
Check and replacement of the gauge of absolute pressure in the pipeline (MAP)
Check and replace the intake air temperature sensor (IAT)
Check and replacement of the gauge engine coolant temperature (ECT)
Check and replace the crankshaft position sensor (CKP)
Check and replace the camshaft position sensor (CMP)
Check and replacement of the gauge-switch of pressure in the system hydrostrengthening wheel (PSP)
Check and replacement of the oxygen gauge (l-probe)
Check and replace the knock sensor
Check and replace the fuel temperature sensor Vehicle speed (VSS)
Check and replace the vehicle speed sensor (VSS)
Check and replacement of components of system of stabilization of turns of idling
The control system functioning valve power
The system controlled crankcase ventilation (PCV)
Exhaust gas recirculation (EGR) - the general information, check of a condition and replacement of components
System of catching of fuel evaporations (EVAP) - the general information, check of a condition and replacement of components
Catalytic converter - the general information, check of a condition and replacement
Transmission
Coupling and power shafts
Brakes
Suspension and steering
Body
Onboard electric
 


Hit Counter by Digits


print page printable version

Catalytic converter - the general information, check of a condition and replacement



In order to avoid breach of warranty applicable to systems, components of emission control, check and maintenance of the catalytic converter in a car-care center workshop.


general information

The catalytic converter is a component of systems of decrease in toxicity of the fulfilled gases, included in the exhaust system and serves to reduce the emission into the atmosphere of toxic components. On considered cars in this manual are used catalytic converters of two types. Conventional oxidation converter enables to reduce the content of hydrocarbons in the exhaust gases, and carbon monoxide. Three-functional catalytic converter additionally reduces the emission of nitrogen oxides (NOx).

CHECK

PERFORMANCE ORDER

1. diagnostic equipment to check the health condition of the catalytic converter is costly and very difficult to use. If you suspect drive failures, drive away the car to check the workshop.
2. Whenever the vehicle for any reason, rise above the earth, the converter inspect for signs of mechanical damage, traces of corrosion and leaks. Check the condition of the welds and the reliability of a tightening flange bolts fastening the device to the sections of the exhaust system. A defective catalytic converter must be replaced.
3. Despite the reliability of the design converter, there is a fairly high probability of blockage. The simplest way to check the patency of the converter is to check with the gauge:

a) Connect a vacuum gauge to the intake manifold vacuum source (see. Part of the total overhaul of the engine the Head of engine);
b) Warm up the engine to normal operating temperature, move the selector lever to position "P" (AT model), or turn neutral (models with Manual transmission) and cock a lay brake;
c) Consider the testimony of the gauge at engine idle speed;
d) Open the throttle, raising the engine speed to 2000 rev / min;
e) expedited release valve and read the gauge;
f) Repeat the test three more times, each time recording the result;
g) If the result of the fourth dimension is more than 2.5 mm Hg. Art. below shot at idle readings, therefore, it is probable patency converter or exhaust pipe.

Component Replacement

PERFORMANCE ORDER

See chap. The power supply system and release (section devoted to service the exhaust system).





« previos page
System of catching of fuel evaporations (EVAP) - the general information, check of a condition and replacement of components
next page »
Transmission

Copyright © 2010 AutoManuals.biz. Trademarks belong to their respective owners. All rights reserved.