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!

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  • 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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Posted on Jan 02, 2017



  • 85216 Answers

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

  • 6982 Answers

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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1999 jeep cherokee . overheating and no heat!!!!

Replace the thermostat and bleed the air from the cooling system, then if it still overheats you may have a leaking cylinder head gasket. Any shop can detect the leakage with a gas analyzer by looking for the presence of combustion gases in the cooling system.

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Smell antifreexe and heater not working after putting stop leak in 1999 jeep grand cherokee

would bleed the heater rad .the smell of anti freeze could be from the hose bursting and going on engine

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1999 jeep grand cherokee lorado is leaking antifreeze only when it is parked

Could be a hose leaking or radiator or water pump or heater core or around thermostat housing.

Aug 13, 2012 | 1999 Jeep Grand Cherokee

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My 2000 jeep grand cherokee has an overheating problem, replaced radiator ,hoses and thermostat , but still runs hot

Is the fan working properly? Is the radiator flowing correctly? Does the rad cap hold the proper pressure?

Aug 21, 2011 | 2000 Jeep Grand Cherokee

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I have a 1999 jeep grand cheroke my heater core is leaking I try stop leak it doesn't work any other option instead replace my heatercore??

I would just have the heater core replaced. One common theme with all repairs that are temporary, is ... well, "temporary" can mean "all of three seconds". All the stop leak gunk and whatnot will typically block your heater core up, making you replace it anyway if you want heat. Or you could take the heater core out of the loop, get an adaptor and plumb the heater lines together.

Jan 17, 2011 | 1999 Jeep Grand Cherokee

1 Answer

The heat in my jeep grand cherokee is not working

This is a common problem with Jeeps this age. Since there's no Heater Control Valve running down the hoses through the firewall, the heat is controlled through what's called the Blend-Air Door which is operative for if it failed completely, you would still have air deflected to the windshield. A thermostat isn't always the cure especially on these models. What you appear to have is a stopped up Heater Core. As long as you don't have a green liquid on the passenger floorboard, contact a local radiator shop and find out the cost to disconnect the two heater hoses from the Thermostat housing and "back-flush" them with air and water until everything runs clear. Don't use a chemical cleaner for if your heater core is weak, it could eventually start leaking and costing you an arm and a leg in labor costs to remove and re-install a new one. At times the no heat problem on Jeeps is that at one point or another, someone dumped a form of Stop-Leak into your cooling system. NEVER do that for the heater core is the 1st thing to stop up. Use regular pepper out of your kitchen for a quick fix should you develop a leak, for that can be flushed out easily whereas Stop-Leak turns into a mud-like substance. If you do have a hose leaking, then unscrew the radiator cap one notch to keep the 18 pounds of pressure off the hose until you can find a suitable place of repair.


Nov 02, 2009 | 1996 Jeep Grand Cherokee

1 Answer

Blew radiator hose, overheated, Hose replaced,

Did the inside of the distibuter cap get wet? If so dry it out and it should start.

Oct 03, 2009 | 1996 Jeep Grand Cherokee

1 Answer

Helpp-my jeep grand cherokee (1996)blew a radiator hose. it overheated. Hose replaced, fluid replaced-no spark-so wont start. Engine turns over

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

Oct 03, 2009 | 1996 Jeep Grand Cherokee

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