4.0 liter 6 cyl 2000 jeep grand cherokee i put new radiator in. new thermostat and had system flushed.it continues to overheat. with the cap off and engine running its bubbling up. is this an indication that the head gasket is blown or could a bad water pump cause this?

Radiator exploded! - JeepsUnlimited

www.jeepsunlimited.com/forums/showthread.php?550352-Radiator...

Jun 8, 2012 - 20 posts - ‎13 authors
And can I fix it somehow or I have to replace the whole radiator assembly? ... Bosnia should be able to order you a radiator from the Austrian Jeep factory or just ... grand cherokee wj 4.0 4wd, year 2000, 160 000 miles. would you recommend .... I have a2001 and it had about 143,000 miles on it at the time.

Radiator!!! - Jeep Cherokee Forum

www.cherokeeforum.com > Technical Discussion > OEM Cherokee Tech
Oct 18, 2009 - Anyone know why my 2000 Cherokee blew a 2 Radiators within the past year ... 1999 Grand Cherokee, the radiator is made out of flimsy plastic. she blew ....I am steering the wife away from 1999 to 2001 Grands due to what I ...

2000 Jeep Grand Cherokee Laredo In-line 6 cyl. 4.0L ...

www.carsurvey.org > Jeep > Grand Cherokee > 2000 > Review
Oct 25, 2011 - The radiator on these Jeeps has a plastic housing at the hose connection. .... after paying them a $90.00 diagnostic fee, that the radiator fan wasblown, ... all of these same problems with their 2001 Jeep Grand Cherokees. images for Blown radiator.. 2001 grand cherokee jeep

Hi David, How long did you run the engine before checking the temperature? The thermostat will only begin to open when the engine has warmed and the gauge begins to move. If after giving it a correct warming period it has still remained cold, I suggest the following. As you have already replaced the water pump, thermostat and radiator cap, the radiator may be blocked. Carry out a back flush, meaning, use a good quality radiator flushing chemical and follow the instructions carefully. Run the engine in accordance with the instructions. Let the engine cool and then draining, flushing the system by connecting a hose pipe with a fairly good head of pressure against the usual direction of flow. If that fails you may need to replace the radiator. Let me know how you get on, Happy new year Regards John

Did you bleed all air from the system? Is it actually overheating or is the light just coming on? If so, replace the temperature sending unit. If you are loosing coolant with no apparent leak then suspect a blown head gasket which will cause the engine to overheat. A compression test will verify this.

1. On 2000 Jeep Grand Cherokee 4.7L V8
2. Remove lower radiator hose clamp and lower radiator hose at thermostat housing.
3. Remove thermostat housing mounting bolts, thermostat housing and thermostat.

2000 Jeep Grand Cherokee 4.0l v6Note:on the In-line 6 4.0L model the thermostat housing is mounted at the top of the engine block next to the water pump.

have a repair shop do a "block test" this test will test the cooling system for combustion gases. If gases are present, you may have head gasket or cyl head leakage.

Check the fuse for the fan and use a test light to make sure that the circuit is functioning. Warm up your car then feel along the top and bottom of the radiator to check for cold spots. If you find any then you may need to replace your radiator. If your heater isn't currently working it may be that since it is a part of your cooling system.

SOUND LIKE COOLING FAN NOT WORKING.YOUR VECHICLE HAS A HYDRALIC ELECTRIC COOLING FAN CONTROL BY PCM.TAKE JEEP TO THE GARAGE THEY HAVE TO USE A DRB 3 SCAN TOOL TO PULL UP ANY FAULT CODES.

I think you need to service the cooling system on this 15 year old car. But first, turn on the A/C and the cooling fan should run continuously. If not, the fan motor is bad, the fuse is blown, or the relay is defective. Also if the fan runs with the A/C on but does not run when it is not on even when the engine overheats, the thermal relay is bad. Check the water pump closely for leaks. If you see a leak at the pump it is bad and must be replaced. If you see white smoke from the exhaust or a white foam on the underside of the oil fill cap, and are loosing coolant with no apparent leak, you may have a blown head gasket. If so, have it looked at by a professional for diagnosis. If you do not think you have a blown gasket then proceed. Inspect all hoses and replace as necessary. Purchase 1 gallon of antifreeze and 1 gallon of distilled water or 2 gallons of premixed coolant. Also purchase a new thermostat. Set the heater to hot, drain the coolant, flush the system, and replace the thermostat. Pour in a 50/50 mix of antifreeze and distilled water. Leave the radiator cap off and start the engine. Keep the radiator topped off and you watch for air bubbles escaping from the radiator. When you see no air bubbles escaping replace the cap and check for leaks.

I would suggest you have the radiator and cooling system pressure tested . .another option would be to get a new radiator cap and try that. If you want to do a quick test for the radiator cap .. try loosening it to the first notch and see if your overheating problem subsides ..

try a new radiator cap, it might old and not holding pressure