Question about 2000 Jeep Cherokee

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Leaking engine coolant. the coolant eventually all leaks out and car over heats.

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  • mike mountain Jan 03, 2011

    Where is the leak located? Can you give a general location? Does it happen only when running (like it gets faster) or does it leak even when cold?

  • JOE SOLARE Jun 10, 2013

    i BELIEVE IT TO BE A FREEZE PLUG

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Yeah my 2004 jeep grand cherokee laredo 4wd is leaking coolant and when it leaks all the way out my car starts to overheat, when im idle it continues to over heat quickly, when im idle my air doesnt blow out of my vents only when im in motion, also when i park my car my coolant leaks all on the ground. My brother trys to locate the leak at first i thought it was my radiator leaking but it turned out not to be it seems to be close by my engine block....please help

Posted on May 06, 2013

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Does the leak show up on the ground when you are parked with the engine running or stopped.
Determine where it's leaking from. Hose? near fire wall, near radiator. Water pump will leak when it's worn.
Can you smell it when you're inside the car? heater core.

Posted on Jan 03, 2011

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I have a 90 chev camaro rs since new, but since then this vehicules has the same problems, "getting hot" and hotter when getting older. I have change every detail at it and even a additional...


Inside your car's engine, thousands of controlled explosions called combustion events occur. These explosions are created by igniting a fuel / air mixture inside the engine. Spark plugs are used to ignite the fuel / air mixture contained in the cylinders. These explosions are converted into power through the engine while producing a large amount of heat. These high temperatures are controlled with the help of the cooling system. A cooling system consists of a water pump, cooling fan, thermostat, radiator hose, hose clamps, radiator, radiator cap and coolant. Engine coolant is used to transfer heat from the engine to the radiator by the cooling system. The radiator removes heat from the coolant by forcing air through the radiator cooling fins. Without coolant your engine will overheat and if left unattended severe engine damage will occur. Engine coolant colors can vary from green, orange, blue, clear and yellow each having their own unique protective and environmental properties. Coolant leaks are a common car problem that can lead to overheating; we have listed some of the most common causes below.(Always inspect engine cold to avoid personal injury) (note: coolant and antifreeze refer to the same product, in below freezing, coolant lowers the freeze point hence the name anti-freeze and in warm weather coolant help raise the boiling point, "coolant").
Troubleshooting Procedure
Step 1: Check Engine Coolant Level, Test For Leaks - Engine coolant is used to transfer heat from the engine to the radiator; if a coolant leak is present the engine will eventually overheat. Inspect the engine coolant level in the coolant reservoir tank; coolant level should be between the hot and cold marks. Always check the coolant level when the engine is cold, preferably over night. If the coolant level is not between the reservoir marks the cooling system may have a leak.

If engine overheating has occurred the coolant level will naturally be low due to expansion of the coolant from the extreme heat of the engine. This heat expansion forces coolant out of the radiator and coolant reservoir. To test for an engine coolant leak move the car to a dry smooth surface and allow the engine to cool. Remove the radiator cap and carefully (do not spill) add water until full, then re-install cap. Start engine and allow to run for about three to five minutes (do not allow to overheat) while the engine is running inspect the ground below the engine, if an engine coolant leak is present observe the location of the coolant drops, this will help determine where to start looking for the coolant leak (shut the engine off before inspecting).

If no coolant is observed two additional checks are needed for a complete test. With the engine off remove the engine oil fill cap and turn it over, if a milky oil condensation is present the engine may have a failed cylinder head or intake manifold gasket allowing coolant to leak internally. To inspect engine gaskets disassembly is required. Next, the car heater core must be inspected; the quickest way to check the heater core condition without removal the heater core is to inspect the passenger's side foot well compartment carpet for the presences of coolant. If coolant is present the heater core has failed and must be replaced or repaired. After necessary repairs have been made refill the cooling system with manufacturers recommended engine coolant and recheck operation.

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