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Jeep Grand Cherokee

1993-1999 of release

Repair and car operation



Jeep Grandee Cheroki
+ Jeep Grand Cherokee brand Cars
+ Settings and routine maintenance
+ Ryadny six-cylinder engine
+ V8 Engine
+ Procedures of the general and major maintenance of the engine
+ Systems of cooling, heating and air conditioning
- Power supply system and production of the fulfilled gases
   General information
   Procedure of dumping of pressure of fuel
   Check of pressure of fuel and functioning of the fuel pump
   Removal and installation of a fuel tank
   Cleaning and repair of a fuel tank - the general information
   Repair and replacement of fuel lines
   Removal and installation of the fuel pump
   Check of serviceability and replacement of the block of the fuel level sensor
   Removal and installation of assembly of an air purifier
   Replacement of a cable of gas
   System of injection of fuel - the general information
   Check of serviceability of system of injection of fuel
   Serviceability check, removal and installation of the case of a throttle
   Check of serviceability and replacement of a regulator of pressure of fuel
   Serviceability check, removal and installation of injectors of fuel
   Check of functioning and replacement of components of system of stabilization of turns of idling (IAC)
   Service of system of production of the fulfilled gases - the general information
+ System of electric equipment of the engine
+ Systems of decrease in toxicity of the fulfilled gases and engine management
+ Manual box of gear shifting
+ Automatic transmission
+ Transfer case
+ Coupling and transmission line
+ Brake system
+ Suspension bracket and steering
+ Body
+ System of onboard electric equipment
+ Governing bodies and operation receptions



Serviceability check, removal and installation of injectors of fuel

See the prevention at the beginning of the Section Procedure of dumping of pressure of fuel.

Check

 PERFORMANCE ORDER

  1. Start the engine and warm up it to normal working temperature.
  2. At the engine working on idling on one disconnect each of injectors. Watch thus changes of turns of idling of the engine. If falling of turns of the engine almost equally at a detachment of an injector of each of cylinders, injectors in an order also function regularly. If shutdown any of injectors does not lead to falling of turns of the engine, pass to performance of procedures of the following item.

For a rassoyedineniye of electric sockets of injectors it is required to give nuts and to raise the highway of laying of a plait of wires.

  1. Switch off the engine Disunite the electric socket of a suspected injector and measure resistance between two plugs of the socket (from an injector) (see an illustration).
  2. Resistance should equal about 12.4 Ohm. Otherwise replace an injector.
  3. If resistance of an injector lies in admissible limits, it is necessary to use the voltmeter with a high impedance or a special control lamp for check of a plait of wires of injectors (ask in shops of automobile accessories) (see an illustration).
    • If tension on the socket periodically changes from zero to 2 In (or the blinking of a control lamp 0, an injector food in norm takes place.
    • If tension is absent, check a plait condition (Head System of onboard electric equipment).
    • If the plait is not damaged and in it there is no short circuit, check conducting between the module of management of RSM and an injector (ами) on existence of break, short circuit or violation of quality of contact.

Removal

 PERFORMANCE ORDER

  1. Disconnect a negative wire from the battery.
  2. Dump pressure in a power supply system (The section Procedure of dumping of pressure of fuel).
  3. Disunite electric sockets of injectors of fuel.
  4. Disconnect vacuum and fuel hoses from a pressure regulator (The section Check of serviceability and replacement of a regulator of pressure of fuel).
  5. Disconnect from the fuel highway all tires of grounding.
  6. Disconnect from the fuel highway the line of supply of fuel.
  1. For a detachment of the line of supply of fuel from the fuel highway at first release a safety clip of shtutserny connection.

... then enter in connection special, made of plastic, the tool and отстыкуйте the line, having wrung out the tool lock sponges.

  1. Give fixing nuts and disconnect the fuel highway from injectors.
  1. Remove the arm of the fuel highway located close with a regulator of pressure of fuel (the engine in volume of 5.2 l is shown).
  1. Give bolts (shooters) of fastening of the highway to the inlet pipeline.
  1. Take the fuel highway from an impellent compartment.
Bolts of fastening of the fuel highway on the engine in volume of 4.0 l.
  1. Take injectors from the nests in the inlet pipeline, remove from each of injectors and throw out sealing rings of three types.

At correction of defects even one of injectors it will be reasonable to remove them everything and to replace all three types of rings on everyone.


  1. Take from assembly of the fuel highway clamps of injectors.
  1. Carefully remove from an injector sealing rings of round section.

Installation

 PERFORMANCE ORDER

  1. Grease new rings (podushechny type) with pure impellent oil and insert them into injectors.
  2. Grease sealing rings of round section with pure impellent oil and put on them an injector (ы), then insert each of injectors into the nest in the fuel highway and establish clamps.
  3. Grease new sealing rings laying with pure impellent oil and enclose from in nests of injectors in the inlet pipeline.
  4. Establish assembly of injectors with the highway on the inlet pipeline. Tighten bolts of fastening of the highway with demanded effort.
  5. Further installation make as it should be, the return to a removal order.
  6. On termination of installation of injectors / the fuel highway turn the ignition key in the situation ON, however do not turn a starter (it will lead to two-second turning on of the fuel pump and pressure lifting in fuel lines and the highway). Repeat inclusion two-three times, then check fuel lines, the highway and injectors on existence of signs of leaks.