Question about 2000 Jeep Grand Cherokee
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Posted on Jan 02, 2017
The problem with these jeeps is that the older they get the more clogged the radiator geats.
The radiator in the Cherokees are only a single row of tubes.
You can try to flush out the radiator, but replacing it with a heavy duty type is probably a better option.
Your car is not getting enough flow to cool down the engine.
Also you want to check that the electric fan is coming on. There is a coolant sensor in the radiator.
Posted on Nov 05, 2008
the cylinder behind the water pump is the one thats fouling up no doubt.Sensor cannot cause this hard starting unless it controlling the auto start ,have one of these pieces of metal??? in for repair at the moment ,losing power steering fluid ,what a rust bucket and petrol drinker must drink more petrol than er indoors drinks tea.The one that would know for sure is emmisionwiz,a straight water temperature sensor will not cause this problem on its own but some motors like VW golf have two sensors and the second one in would cause this sort of problem as its controlling the fuel enrichment side of the ECU programming.Just dont have enough product knowledge to tell you what one to change ,sorry .Ask me about a morris minor or a ford zodiac
Posted on Feb 13, 2009
Your heater problem, is the clue here...generally when the heater stops working like that it's due to compression gasses entering the cooling system, usually through the cylinder head gasket. The core is above the engine, so those gasses accumulate there. Since you have already replaced the other components in the system, Id have a hydrocarbon test done to verify that. I am assuming though that the radiator electric fan is coming on. If it does not, in extreme cases, steam can do the same thing. Oil in the coolant, coolant in the oil or white smoke from the tail pipe are also symptoms of a head gasket though you can have one, all or none of those symptoms, depending on where the failure is exactly on the gasket itself. (why that test is important)
Posted on Mar 13, 2010
SOURCE: 4.0 liter 6 cyl 2000
Either there is still air in the cooling system or you are correct that the headgasket has failed.
Running with the cap of for at least 20 minutes should clear the air out of the cooling system. If it continues to bubble after that than the bubbles are likely combustion gases sneaking by the head gasket.
Let run it with the cap on and let it start pushing coolant into the overflow. Shut it down and smell the coolant reservoir. If it smells like exhaust it is the head gasket.
Posted on Oct 18, 2010
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