Question about 2004 Jeep Grand Cherokee
In a system that's full, you should not hear the coolant flowing Generally if you can hear it that means there is air in the line.
If you don't have a sealed system, with the engine off and cold, remove the radiator cap and add coolant there with the engine running and heat on high. If it overheats while filling check the temp of the upper and lower hoses. If one is much cooler than the other, replace the thermostat and re-fill and check again. If filling the radiator takes a long time and you cannot pour coolant in without stopping every five seconds to wait for it to go down the radiator is probably blocked internally.
A failing head gasket can push exhaust into the cooling system. If you see any steam at the tailpipe or coolant in the engine oil you may have a problem there. A dye test or "sniffer" can also be used to verify a problem like that. Don't worry about that yet...you have other things to test first!.
Posted on Aug 24, 2010
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Posted on Jan 02, 2017
You should take it to a shop and have a pressure test done on it. If it's a 3.3, it only takes about 30 min. to put a water pump on. If it's a 3.5 style engine, you have to take the timing cover off to replace the water pump. You also have to replace the timing belt.
Posted on Jan 11, 2009
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