Question about 1997 Jeep Grand Cherokee

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I have a1997 jeep grand Cherokee Laredo strait 6. I recently replaced thermostat and water pump. When the heater is on it will now warm air for a short time them blow cool air. I also noticed today steam coming from top of radiator when I shut it off.

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Two reason for that. interior heater element is clogged, or cloged with airpocket. park your car on uphill, or raise infront of your car, turn on heater on highest setting and adjust it to give heat to cabin, let it bleed the air inside your cooling system. overheating expansion tank and boiling water makes you sure that air wont allow your coolant to travel insite hoses. (there is another probability that you have installed reverse rotation water pump, and this wont be able to create enough flow)

Posted on Dec 02, 2014

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Sounds like you need a thermostat. Check your anti freeze level.

Posted on Dec 01, 2014

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Posted on Jan 02, 2017

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SOURCE: The heater is my Jeep is not blowing very warm

I would recommend flushing the cooling system and replacing the thermostat.....easy to do and only about $14 for a new thermostat.If that does not work then you either have a coolant leak somewhere or a bad heater core. I would also pressure test your cooling system before you flush the system to look for leaks in the system

Posted on Dec 14, 2009

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SOURCE: I have a 2002 Jeep Grand Cherokee Laredo with the

If you put the thermostat in correctly (spring towards the engine) that should be OK. Likely if the water pump wasn't leaking or had a bad bearing, you wasted your $ on that.
If you re-filled it and did not have the heater on high heat, you may have some trapped air in there. But, still overheating says another thing. If you have a blown head gasket, it can pump compression into the cooling system and drive the coolant from the core. It will also overheat. You can have that tested at most any decent shop that will do a hydrocarbon test to find that.I think someone makes a chemical test kit for that but not sure if it's very expensive or not. White smoke from tailpipe will also be an indicator as will be any coolant in the engine oil or coolant on one or more spark plugs. If it turns out that it has a head gasket problem don't stop looking for problems as often a faulty fan or obstructed radiator can cause the initial overheat that caused the gasket to fail.

Posted on Jan 16, 2010

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SOURCE: 1999 jeep grand cherokee laredo

Try these troubleshooting tips before replacing anything else.

Posted on Nov 01, 2010

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2 Answers

How do I fix my heater in my 99 jeep grand Cherokee


There are two systems to evaluate.
  1. Air Blows Fine but not Hot -> Check Thermostat and coolant level.
  2. No Air Blows -> Check Blower Motor, Blower Motor Resistor Pack and Blower Control in Dash

Nov 14, 2014 | 1999 Jeep Grand Cherokee

1 Answer

2003 Jeep Cherokee Laredo started overheating after replacing thermostat.


This is s common fault after replacing thermostat, there is a system bleed screw located on radiator which will need bleeding? If you warm engine up"only warm not hot" then locate bleed screw and slacken off, not unscrew all the way? You will hear a hissing noise of the air in you system. Very similar to central heating radiator in a house! Once you have water coming through then tighten up bleed screw/bolt and give engine a bit of a run. Hope this helps

Oct 15, 2013 | 2003 Jeep Grand Cherokee

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I have a 2006 Cherokee Jeep Laredo. Recently had


its probly the 02 sensor. u can get it checked 4 codes @ a mechanics shop. or dodge dealer

Feb 15, 2010 | 2006 Jeep Grand Cherokee

1 Answer

I have a 2002 Jeep Grand Cherokee Laredo with the


If you put the thermostat in correctly (spring towards the engine) that should be OK. Likely if the water pump wasn't leaking or had a bad bearing, you wasted your $ on that.
If you re-filled it and did not have the heater on high heat, you may have some trapped air in there. But, still overheating says another thing. If you have a blown head gasket, it can pump compression into the cooling system and drive the coolant from the core. It will also overheat. You can have that tested at most any decent shop that will do a hydrocarbon test to find that.I think someone makes a chemical test kit for that but not sure if it's very expensive or not. White smoke from tailpipe will also be an indicator as will be any coolant in the engine oil or coolant on one or more spark plugs. If it turns out that it has a head gasket problem don't stop looking for problems as often a faulty fan or obstructed radiator can cause the initial overheat that caused the gasket to fail.

Jan 16, 2010 | 2002 Jeep Grand Cherokee

1 Answer

Heater quit blowing warm


First ensure the coolant is not low it must be at the right level or heater won't work top off the reserve expansion tank with 50 percent water 50 percent antifreeze mixture. Repalce the thermostat, purchase a Haynes repair manual at a Advance Auto parts store for diagrams and thermostat replacement procedure.

Jan 05, 2010 | 1998 Jeep Grand Cherokee

1 Answer

The heater is my Jeep is not blowing very warm air. It puts out mild heat at best. I have a 2001 Jeep Grand Cherokee Laredo.


I would recommend flushing the cooling system and replacing the thermostat.....easy to do and only about $14 for a new thermostat.If that does not work then you either have a coolant leak somewhere or a bad heater core. I would also pressure test your cooling system before you flush the system to look for leaks in the system

Dec 14, 2009 | 2001 Jeep Grand Cherokee

1 Answer

Air conditioning not cooling while driving,works sitting still


If the air blows normally but warm, then you need to check the compressor and its gas. you might have a leakage.

Apr 30, 2009 | 1996 Jeep Grand Cherokee

1 Answer

Heater problem


it could be that the heater is air locked. joe

Nov 21, 2008 | 1999 Jeep Grand Cherokee

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