Question about 2005 Jeep Grand Cherokee

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Do I have to drain the engine coolant on a 2005 Jeep Grand Cherokee to replace thermostat?

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  • Jeep Master
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Yes, at least enough to be below the level of the thermostat. Heater on high when refilling, and wait for new thermostat to open, while filling...Pressure test when finished.

Posted on Oct 16, 2010

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  • Jeep Master
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I don't, but some will spill. I just put a pan underneath the thermostat.

Please see my tip at http://www.fixya.com/cars/r5929960-s_thermostat . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

Posted on Oct 16, 2010

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Posted on Jan 02, 2017

SOURCE: Coolant isn't circulating in the engine of a Jeep 2002 Grand Cherokee V8. Radiator was just replaced as well as the water pump and thermostat.

Hi Jonny, While the engine is cold the thermostat will be closed, allowing coolant circulation around the engine block and cylinder head but not through the radiator. Only when the engine has reached normal operating temperature will circulation be noted in the radiator. A good test is to remove the thermostat while the engine is cold , start the engine with the radiator pressure cap removed and observe flow. If as I suspect it is there, refit the thermostat and check the heat gauge. If all remains well there is no problem. If the engine overheats replace another thermostat. If there is no circulation with the thermostat removed, there is a blockage in the cooling galleries of the engine. If chemical flushing does not clear it, it will require disassembly of the engine with careful step by step inspection at every stage. If the cylinder head(s) had been removed I would suggest making sure of the galleries not being blocked by installing the gaskets incorrectly. Regards John

Posted on Apr 21, 2013

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1 Answer

How to replace a termostart


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keys hidden.
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remove stat housing HOSE,. then the housing.
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Feb 22, 2014 | 1997 Jeep Grand Cherokee

1 Answer

How to change thermostat in 2005 Jeep Grand Cherokee 3.7


Drain the coolant into a bucket so it can be reused or disposed of. Follow the top radiator hose from the radiator to the engine. Right there where the hose ends is an elbow with 2 bolts on it. when you remove those bolts the thermostat will be under the housing. Make sure you spary the bolts with PB Blaster or another penetrate real well the night before, those bolts snap real easy. Make sure you scrape the mating areas of the housing real well also but DO NOT gouge the mating surfaces because it will case leaking. Make sure you DO NOT install the thermostat backwards. and upon reassembly DO NOT over tighten the housing bolts because they will snap. Good luck also BUY a repair manual for your car. It will save you tons of time and give you step by step instructions on how to do these jobs.

Oct 25, 2013 | 2005 Jeep Grand Cherokee

1 Answer

Coolant isn't circulating in the engine of a Jeep 2002 Grand Cherokee V8. Radiator was just replaced as well as the water pump and thermostat.


Hi Jonny, While the engine is cold the thermostat will be closed, allowing coolant circulation around the engine block and cylinder head but not through the radiator. Only when the engine has reached normal operating temperature will circulation be noted in the radiator. A good test is to remove the thermostat while the engine is cold , start the engine with the radiator pressure cap removed and observe flow. If as I suspect it is there, refit the thermostat and check the heat gauge. If all remains well there is no problem. If the engine overheats replace another thermostat. If there is no circulation with the thermostat removed, there is a blockage in the cooling galleries of the engine. If chemical flushing does not clear it, it will require disassembly of the engine with careful step by step inspection at every stage. If the cylinder head(s) had been removed I would suggest making sure of the galleries not being blocked by installing the gaskets incorrectly. Regards John

Apr 21, 2013 | 2002 Jeep Grand Cherokee

2 Answers

Could you tell me where the coolant temperature sensor is located at on an inline 6, 4.0L 2003 Jeep Grand Cherokee Laredo?


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Fig. The coolant temperature sensor is installed in the thermostat housing (click image for zoom).
  1. Partially drain cooling system until coolant level is below cylinder head.
  2. Disconnect coolant temperature sensor wire connector.
  3. Remove sensor from thermostat housing.
Hope helps (remember to rate ths answer).

May 12, 2011 | 2003 Jeep Grand Cherokee

1 Answer

I'm dealing with a 2005 Jeep Grand Cherokee with 3.7 litre V6. I just replaced a leaking radiator and thermostat and the car still runs hot. The fan is working and I see no leaks. What's next? Tell...


The rise in engine temp after replacing the radiator and thermostat could possibly be caused by air pockets trapped in the cooling system. You will need to run the engine with the radiator cap off and let the air escape. DO THIS only when the engine is cold, and let it build up to temp. Coolant will over flow during this process, but eventually coolant will need to be added once the air is released.

May 06, 2011 | 2005 Jeep Grand Cherokee

2 Answers

How do I install a thermostat on a 1999 jeep grand cherokee v8 4.7 engine


Hello,

To install a thermostat on Your 1999 grand cherokee jeep. You will be needing these instruments, Container, Clamp tool or vise-grip pliers, Thermostat and gasket, 10mm socket or wrench, Razor blade, Flathead screwdriver (if necessary). Then You carefully follow the steps below:
  1. Open drain **** on the radiator to drain the coolant from your Jeep Grand Cherokee. This drain **** is located on the lower right side facing the rear of your Cherokee. Use a seal able container and reuse the coolant if it is relatively new and clean.
  2. Follow the upper radiator hose to the point where it meets the thermostat housing. The thermostat is located inside the housing. Use a clamp tool or vise-grip pliers to loosen the clamp holding the hose to the housing. Work the end of the radiator hose free of the thermostat housing.
  3. Remove two bolts holding on the thermostat housing cover. Pull off the cover. Take note of the position of the old thermostat. Remove and install the new thermostat in exactly the same position.
  4. Scrape off residue of the old thermostat gasket from the inside of the thermostat housing cover using a razor blade. Avoid getting any debris inside the thermostat housing.
  5. Install the new gasket. Reattach the thermostat housing cover and radiator hose. Start your Jeep Cherokee and run the heater on high. Allow the engine to warm up. Check for leaks.
Those are the steps to follow to install your thermostat.
Hope this was helpful. Thank You for using fixya!!!

Jan 12, 2011 | 1999 Jeep Grand Cherokee

3 Answers

2004 jeep grand cherokee overheating and loud noise


sounds like one of two problems your fan is not working properly or you radiator is particularly restricted

May 20, 2010 | 2004 Jeep Grand Cherokee

1 Answer

Jeep grand Cherokee 1999 engine coolant temperature gage problem


please have your thermostat replaced first..cheapest option first.perhaps thermofan is kicking in at wrong time sensor?

Mar 03, 2009 | 1999 Jeep Grand Cherokee

2 Answers

How do I change the thermostat in a 2000 jeep grand cherokee 2000 Jeep grand Cherokee is over heating when idling. It was recommended to me to change the thermostat but I do not know how and am unable to...


follow top radiator hose from radiator to engine wear hose ends, it will be clamped to whats called the gooseneck, thermostat is under that. you will have to drain coolant, not all, maybe 1 half gal. before you remove it. 2 bolts new gasget new thermostat, just remember spring on new thermostat goes in engine.

Feb 01, 2009 | 2000 Jeep Grand Cherokee

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