Jeep Grand Cherokee

1993-1999 of release

Repair and car operation

Cooling system

Overheat

1. The cooler in system (Head of Control and routine maintenance) does not suffice.
2. The driving belt of the water pump is worn-out or damaged or adjustment of its tension (Head of Control and routine maintenance) is broken.
3. Internal channels of a radiator are blocked or is polluted the front grille (The head of System of cooling, heating and air conditioning) (is blocked).
4. The thermostat (The head of System of cooling, heating and air conditioning) is faulty.
5. Fan blades (The head of System of cooling, heating and air conditioning) are broken or burst.
6. Does not hold pressure a radiator cover. Make cover check by pressure (address on car repair shop).

Overcooling

1. The thermostat (The head of System of cooling, heating and air conditioning) is faulty.
2. Indications of a measuring instrument of temperature (Head System of onboard electric equipment) are inexact.

External leakages of a cooler

1. Hoses are damaged or destroyed as a result of material aging or weakened fastening them on unions. Replace hoses and/or tighten collars of their fastening (Head of Control and routine maintenance).
2. It is spoiled epiploons of the water pump. In this case the cooler will exude through a control opening in the pump case (The head of System of cooling, heating and air conditioning).
3. Leaks from internal channels of a radiator or the lateral tank (ов) take place. Professional repair of a radiator (the description of procedure of removal see in the Head of System of cooling, heating and air conditioning) is required.
4. Leaks through a drain stopper of the engine (Head of Control and routine maintenance) or vyzhimny jams of water galleries (Head Ryadny the six-cylinder engine) take place.

Internal leakages of a cooler

1. Leaks through laying of a head of cylinders take place. Make check of system of cooling by pressure.
2. There are cracks on walls of cylinders or in head molding. For check disassemble the engine (Head Ryadny the six-cylinder engine).

There are cooler losses

1. system too much cooler (Head of Control and routine maintenance) is filled.
2. The cooler boils away as a result of an engine overheat (see. The section Takes place kalilny ignition (the engine continues to work after ignition switching off)).
3. Internal or external leakages of a cooler (take place see. Sections External leakages of a cooler and Internal leakages of a cooler).
4. The radiator cover is faulty. Check a cover pressure.

Cooler circulation is broken

1. The water pump does not function properly. It is simplest to make sure of functioning of the pump having pressed the top hose of a radiator at the engine working at single turns. If at an otpuskaniye of a hose the liquid push in it is felt, the pump functions regularly (Head of Control and routine maintenance).
2. Passableness of system of cooling is broken. Merge a cooler, wash out system and fill it with a fresh mix (Head of Control and routine maintenance). If there is such need, remove a radiator (The head of System of cooling, heating and air conditioning) and carry out its obratnopotochny washing.
3. The driving belt of the water pump is worn-out or damaged or adjustment of its tension (Head of Control and routine maintenance) is broken.
4. The thermostat (The head of System of cooling, heating and air conditioning) is jammed.
5. On 6-cylinder engines the wrong laying of a driving belt that leads to pump rotation in the opposite direction (Head of Control and routine maintenance) can take place.