Jeep Grand Cherokee

1993-1999 of release

Repair and operation of the car

Jeep Grand Cherokee
+ Cars of the Jeep Grand Cherokee brand
+ Settings and routine maintenance
+ Line six-cylinder engine
+ V8 engine
+ Procedures of the general and capital repairs of the engine
+ Cooling systems, 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 the fuel tank
   Cleaning and repair of the 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 the air cleaner
   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 the 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 methods of operation

Service of system of production of the fulfilled gases - the general information

Check of a state and repair of components of system of release have to be made later a sufficient period after switching off of the engine when system components completely cooled down. Besides, working under the car take care of reliability of its fastening in the lifted state.

The system of release consists of a final collector(s), the catalytic converter, the muffler, final and connecting pipes, arms, suspensions and fixing collars and clips. Components of system fasten to the car bottom by means of arms and rubber suspensions. The wrong installation of any details leads to emergence of the extraneous noises and vibrations transferred on a car body.

The arm of an exhaust pipe fastens to the car bottom by means of a rubber suspension.

Muffler and pipes

For support of components of system of release constantly in satisfactory condition and for the purpose of prevention of emergence of noise and vibrations regularly check a condition of its components. Examine components on existence of damages, deformations, the dispersed seams, holes, the weakened fixture, signs of excessive corrosion and other defects from which existence leak of the fulfilled gases and their hit in interior of the car can result. The spoiled sections of system of release should not try to be restored - they have to be replaced. Do not forget also about check of a condition of the catalytic converter.

If system sections as a result of impact of corrosion do not give in to a partition, for their removal use of the welding equipment can be required. The easiest way of the solution of this problem is the request for the help in a workshop of car service where sections will be divided by means of gas cutting. However, in case of the constrained monetary circumstances (or for the purpose of receiving self-satisfaction) it is possible to try to make removal of defective components independently. For this purpose (if there is no opportunity to use gas cutting) it is possible to dismember system sections by means of a hacksaw. If there is an access to a source of compressed air and there is an opportunity to use the pneumatic cutting/cutting nozzle, use it. Do not forget to put on goggles and work in gloves.

When performing repair of system of release it is necessary to follow the following elementary rules:

  • Move ahead along system from its end by the beginning.
  • For simplification of an otdavaniye of fixture previously impregnate it with the getting oil
  • At installation of components of system surely replace laying, suspensions and collars.
  • Grease a carving part of fixture before installation with the anti-taking sealant.
  • Make sure that between again installed components of system and a surface of the bottom of the car there is a sufficient gap necessary for prevention of damage of internal finishing of salon, rugs and an insulating layer as a result of an overheat. Pay special attention to quality of installation of the catalytic converter and thermofilter.

Catalytic converter

The catalytic converter during operation of the engine heats up to very high temperatures. Before touching it make sure that it cooled down enough.

More detailed information on a design and the principle of operation of the catalytic converter is provided in the Head Sistemy of decrease in toxicity of the fulfilled gases and engine management.

Regularly check the thermofilter for existence of cracks, dents, weakening of fastening or loss of fixture.


  1. Remove the thermofilter and check the catalytic converter for existence of cracks and other damages.
  2. If the catalytic converter needs to be replaced, give nuts of fastening of both of its flanges, remove rubber support and take the converter from system of production of the fulfilled gases (for removal of the converter from fixing hairpins the section of pipes of system will need to push away).
  3. You make installation upside-down. Do not forget to replace laying.