Question about 2004 Jeep Grand Cherokee

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Radiator on 04 GC SE blow out

My radiator blew apart on the top plastic right by the hose. What may make that happen?

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Could be a faulty radiator or too much pressure in the system.
You could have a bad head gasket.

Posted on Oct 04, 2008

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Just replaced radiator hose for 2002 BMW X5 4.4 v8 because old one came loose and all fluid leaked out. Refilled radiator with 21/2 gallons of antifreeze. Now when I turn on the car the temp gauge goes all...


Which hose came off? If it was the top radiator hose, is the nipple on the radiator still intact? The failure mode for these plastic radiators is that the top hose nipple crumbles from the inside and blows off.
Did you bleed the cooling system through the bleed screw next to the fill point on the radiator? Normally, when these cars overheat after coolant is changed, it is because there is air in the system. You need to turn on the key and turn the heater all the way up so the heater valve opens, then add coolant to the reservoir until pure water comes out the bleed screw hole. The reservoir will appear to be overfilled, but any excess coolant will push out the first time you drive the car (oops, is EPA listening?)
These cars do tend to loose thermostats more often than other cars for some reason. The way to check that without taking it apart is to pull the top radiator hose off at the radiator and put it over a bucket, and start the car. (do this only after you have bled all the air out of the system) About the time the temperature gauge starts to climb, water should start to trickle out the top radiator hose.
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The heater of my 98 dodge intrepid se will not blow hot air and where is the theromostat located?


the thermostat is right under where the top radiator hose runs into the motor

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The heat has went out and the engine is overheating,it blew the radiator hose off when it happened.


Sounds like you have a bad head gasket, Some simple tests at a repair shop can verify this.

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Try first to fill up the radiator while squeezing the top part of the radiator hose to clear out the air.  Observe once that is done.  this may be caused by a radiator cap that is not sealing the pressure correctly or some parts the cooling system that may let heat escape like radiator hoses that are not secure.  If they all seemed to check out, you may want to have your head gasket checked.

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First drain radiator by opening drain valve,"located on bottom corner usualy the right,but not always." If you open the overflow or remove cap this will happen much faster.For safety sake disconnect ground wire from battery,the radiator is locked down by top cover that attaches to body with generaly 4 bolts, upper and lower hoses have to be disconnected and if it is automatic the transmission cooling lines are connected in stacked fashion,"one above the other."The cooling fan has to be unplugged and it should be removable at this point,"when unplugging fan be carefull with connector so it doesn't break.reverse steps to replace making sure the bolts go in the right place and it all fits properly.the thermostat,"located behind the kneck of upper hose," should be replaced after connecting lower hose because in order to fill the block up and prevent damaging thermostat the block shoud be filled with coolant before attaching upper hose.

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The top radiator hose blew apart. after replacing and filling radiator back up engine runs ruff and guage is hot. radiator water is cold. What is wrong?


First place I'd look is at the thermostat. However, if the hose did not rupture in a normal manner and blew apart, I'd also suspect that you may have a blown head gasket. In that case, compression is entering the cooling system which is not designed to handle such high pressures, therefore causing the hose to explode). This will also result in rough running you observed.

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1992 radiator leak


it sounds like you blew the radiator apart.
most of the time they are alluminum and blow up very easily. i would get another radiator as soon as possible.. good-luck

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