Nissan Maxima QX

since 1993 of release

Repair and car operation


Nissan Maxima QX
+ Nissan Maxima brand Cars
+ Maintenance instruction
+ Settings and routine maintenance
+ Engine
+ Systems of cooling, heating
- Power supply system and release
   General information
   Sbrasyvaniye of pressure in a power supply system
   Check of serviceability of functioning of the fuel pump, measurement of pressure of fuel
   Check of a condition and replacement of fuel lines and their shtutserny connections
   Removal and installation of the fuel pump
   Check of a condition and replacement of the sensor of fuel consumption
   Removal and installation of a fuel tank
   Cleaning and repair of a fuel tank - general information
   Removal and installation of assembly of an air purifier
   Removal, installation and adjustment of a cable of an accelerator
   System of electronic injection of fuel (EFI) - the general information
   Check of serviceability of functioning of system of injection
   Check of a condition and replacement of the case of a throttle
   Removal and installation of a regulator of pressure of fuel
   Removal and installation of the fuel highway and injection injectors
   Check and adjustment of turns of idling
   Release system - the general information
+ engine Electric equipment
+ Control systems of the engine
+ Transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment


Check and adjustment of turns of idling

Frequency of rotation of the engine is called as turns of idling at the released pedal of an accelerator (for example, at a stop on a traffic light). This parameter is critical stochka of sight of efficiency of return of the engine and functioning of its many subsystems. Before starting measurement of turns, make the following checks:

a) Check passableness of a filtering element of an air purifier;
b) Check an inlet air path on existence of signs of leaks;
c) Make sure of lack of signs of losses of depression through vacuum hoses;
d) Check a condition of the battery and serviceability of functioning of system of ignition, including installation of a corner of an advancing of ignition (see. Head of Control and routine maintenance);
e) Check pressure of fuel (see. Section Check of serviceability of functioning of the fuel pump, measurement of pressure of fuel);
f) Check kompressionny pressure in cylinders (see. Part General major maintenance of the engine of Head Engine);
g) Check a condition of EGR and EVAP systems (see. Head of the Control system of the engine);
h) Check TPS adjustment (see. Head of the Control system of the engine);
i) Check onboard system of self-diagnostics on existence of the codes of malfunctions written down in memory (see. Head of the Control system of the engine).

CHECK

 PERFORMANCE ORDER

1. According to instructions of manufacturers connect to the engine a manual tachometer.

On models since 1995 вып., where the ignition system without the distributor for connection of a tachometer is used the special socket which has been switched on in a plait of electroconducting in the right part of an impellent compartment is provided.

2. Reliably cock the parking brake and prop up protivootkatny boots back wheels. Transfer transmission to the situation "R" or "N". Disconnect everything consumers of the electric power. On models 1993 and 1994 of вып. remove the panel of access to RSM (see. Head of the Control system of the engine).
3. Start the engine and warm up it to normal working temperature. Having established frequency of rotation of the engine in 2000 rpm, three times quickly lift it to value of 3000 rpm, then let's to the engine work within about a minute on single turns.
4. On models 1993 and 1994 of вып. turn out the selector of a choice of modes on RSM wall against the stop clockwise (see. Head of the Control system of the engine).
5. On models since 1995 вып. muffle the engine and disconnect electroconducting from the sensor of provision of a butterfly valve (TPS) (see. Head of the Control system of the engine). Again start the engine and lift frequency of its rotation to value over 3000 rpm three times, having in summary returned to single turns.
6. Consider from a tachometer value of turns of idling and compare result of measurement to requirements of Specifications or data of a label of VECI.

In case of different interpretations it is necessary to give preference to VECI data.

ADJUSTMENT

 PERFORMANCE ORDER

1. At excessively low or high turns of idling it is necessary to make their adjustment by means of the special adjusting screw.

Do not make attempts to adjust idling turns by means of the lock screw having factory installation located on the case of a throttle.

2. On models 1993 and 1994 of вып. turn against the stop counter-clockwise the selector of a choice of RSM modes, then muffle the engine.
3. On models since 1995 вып. muffle the engine and connect electroconducting to TPS.
4. Disconnect a tachometer.