Question about 2000 Jeep Grand Cherokee

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No heat on my 1999 jeep grand cherokee and overheating

Blew a radiator hose ,replaced it and put liquid glass stop leak in and the heater did not work and vehicle overheated. unfortunely im not sure if the stop leakcaused this problem but i think it did! like a big dummy while running it through the system i turned the defrost on for a 3 minutes which i think was a no no any solutions to the cause!

Posted by Philip Keith Randall on

  • Philip Keith Randall Nov 15, 2012

    water pump had unusual plastic fins had come loose an worn out. that was the real underlying problem with the circulation of the coolant . was discovered after the radiator and thermostat was replaced.VERY good mechanic and straight up buisness!HATFIELD AUTO good job!



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  • 23 Answers

Stop leak can cause the radiator ports to get clogged. But if your car isn't getting heat, it's probably your heater core. The heater core is usually burried in the firewall between the engine and where you or your passenger put your feet

Posted on Oct 18, 2017


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SOURCE: Overheating Jeep!!

did u properly bleed the air out of the cooling system? if u are not sure raise the front of the jeep as high as u can with a floor jack, fill the coolant recovery bottle all the way up with 50/50 coolant mix and run the engine until it gets hot, then shut it down and run cold water over the radiator core, this will cause the air to bleed out and the coolant in the recovery tank to be sucked in, watch the level in the recovery while u do this, don't let it run dry. If this doesn't cure the problem you have other problems like a poss blown head gasket.

Posted on May 10, 2009


Richard Scordino

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SOURCE: Vehicle needs to purge all the air form the radiator. Jeep Grand

Run engine normally while filling radiator. Leave heater on high heat. When engine temp reads normal, shut it off, wait about three and complete filling.

Posted on Aug 11, 2009


  • 23 Answers

SOURCE: helpp-my jeep grand cherokee (1996)blew a radiator

you may have a blown head gasket. if you drain the cooling system and it starts (it'll be very hard to start, still) then you'll know

Posted on Oct 04, 2009


Rene Rossouw

  • 642 Answers

SOURCE: 1999 jeep grand cherokee laredo

Try these troubleshooting tips before replacing anything else.

Posted on Nov 01, 2010


  • 2006 Answers

SOURCE: 2000 jeep grand cherokee, when

Since you have already changed everything that you have, I can not think of anything new that might cause your Jeep to overheat. Are you going by the meter in your vehicle or doing separate temperature measurements? I had a defective temperature gauge that caused me to chase my tail till I did separate measurements.

Posted on Jun 16, 2011

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Heater doesn't work, overheating engine, anti-freeze waisting fast??

The problem possibly could be due to a hole in the coolant system, i.e. a hole in a radiator hose or even the radiator. Loss of coolant will cause the heater to stop working and the engine to overheat. If it runs normally for a time, such as several days or a few weeks, and only after that time has passed the heater stops working and the engine starts overheating, then suspect a leak someplace. If it starts overheating after driving 5 to 10 minutes regardless of how recently antifreeze was added then, possibly the thermostat. It is staying stuck shut and preventing the hot coolant from leaving the engine and cooling in the radiator. The radiator overflow will probably have antifreeze pushing out the cover as a clue. However this can also be the result of a blown head gasket. As far as the fan, does the vehicle have an electric fan or is it driven directly by the drive belt. If it's electric, then warm it up to operating temp and open the hood and listen if the fan runs or not. It will start and stop depending on how warm the engine antifreeze is. If it does run, then the fan is fine, if not then the temp sensor that activates it is not working and needs to be replaced, or the plug into the fan may have become disconnected. If it's driven by the drive belt, then it should not be an issue unless the belt is broken, which would probably be affecting the power steering and alternator as well. If the vehicle has no power steering and the alternator light is on when running and it overheats, check to see if the drive belt is broken/missing. Check also to see if the water pump pulley is wobbly or loose. That would indicate a bad pump and would need to be replaced. Hopefully you just have a hole in a hose, and a simple hose replacement will fix it. incidentally, it's a good idea to replace both upper and lower radiator hoses at the same time, and the upper radiator hose is usually attached to the thermostat housing, so replace the thermostat at the same time too. Good luck.

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My 1989 GMC Sierra (350, 2WD) was leaking from the water pump and overheating...Installed new water pump and serpentine belt (after getting it off, it needed to be replaced)...Truck is still overheating,...

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If you cant see any water coming out anywhere then the only choice is a blown head gasket.

The reason the resorvior had a leak was the pressure from the engine got into the coolant and blew up the reservior bottle. This is a real common problem with saturns.

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