Question about 1996 Jeep Grand Cherokee

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I just replace a hose on my jeep larado 4.0 and now its running hot, no water in oil, no sighs of any enteral damage, just getting hot, over heating

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  • 18 Answers

Was it the upper radiator hose, and if so, did you somehow damage the thermostat?

Posted on Jan 15, 2013

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  • 7 Answers

Check that you do not have an air lock...while the engine is running check the hoses to see if one is cold, run the engine with the header bottle cap off and if one of the hoses has a bleed nozzle then open it until you have continuous water running and not spitting.
Do not put cold water in a hot engine though, it can blow the head gasket.

Posted on Jan 15, 2013

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Posted on Jan 02, 2017

leetamara
  • 702 Answers

SOURCE: 94 jeep wrangler overheating

Have the cooling system pressure tested. If it holds pressure, that's a good thing. If it doesn't hold pressure, you may have a leaking head gasket. What may be happening is the crack in the head gasket could be blowing hot air into the cooling system causing it to overheat.

Posted on Sep 27, 2008

j_del
  • 1586 Answers

SOURCE: Overheating

Who did the replacement of the parts? Was it done at a shop or at home? Do you know if the cooling system was "burped" after the parts were installed and the coolant was refilled? If you're not sure, burp the radiator. This is easy to do. Jack up the vehicle so that the thermostat is angled upward. Start the car and let it idle until it's 3/4 of the way to overheating, then shut it off and allow it to cool down somewhat. Then pop the cap, let the coolant drain down, and refill it. Restart the vehicle and repeat the process, until the coolant level doesn't drop anymore.

What you're doing is this - anytime the cooling system is opened up, especially when the fluid is drained and parts are replaced, air gets into the system. When you reassemble and refill with coolant, you trap air bubbles in the system. Since the system is sealed, it operates under pressure. As the car runs, the coolant and the air bubbles are circulated. The bubbles get caught behind the thermostat (if you have it angled upward) and keep it from opening. This causes the engine to heat up to the point of overheating. You want to allow it to get about 3/4 of the way to an overheat so that you know the air bubbles are blocking the thermostat. Shutting down the car stops it from heating up to the point of damage, and allows the system time to cool off so that when you pop the cap, you don't get an explosion of coolant in your face. Once it's cool enough to open the system, you open it and release the pressure. This allows the thermostat to open and bleed the bubbles upward to the open cap, where they "burp" into the air. The space they took up fills with coolant, which is why your coolant level drains down. You top it off and repeat to make sure that all the bubbles are out. You'll know you're in good shape when you let it run and it gets to operating temperature and doesn't overheat anymore. Let it cool that final time, open the cap, and since you have no air pockets left in the system, nothing will burp out and your coolant level won't decrease. Then you should be good to go - put the cap back on and drive away happy.

Posted on Sep 28, 2008

lancer721
  • 229 Answers

SOURCE: 1998 jeep grand cherokee cooling problem

Your thermostat is stuck closed. It needs to be changed right away. By the way the operating temp on that motor is 160 degrees so you are running hot you have just been lucky so far. Good Luck

Posted on Dec 01, 2008

pkthoege
  • 93 Answers

SOURCE: my 1996 jeep grad cherokee larado is over heating

You have air trapped in the cooling system. This is a 4.0 right? pull the heater hoses to the rear and let the air out. Run the heater, jack up the front end, rev the eng a few times, this should purge the air

Posted on Dec 16, 2008

  • 1118 Answers

SOURCE: 96 Jeep Country-Heater blowing warm; NOT hot

unless you got visable signs of leakage its not heater core, but it could be pluged with sediment. take off both heater hoses and flush it both ways until it runs clear. you can also mix a little baking soda and water and pour in core and let set for a while and then flush.

Posted on Jan 17, 2009

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1 Answer

Why does my Grand Cherokee overheat after replacing the radiator?


there are many causes of overheating.

first off is you didnt stated engine option (size)

the engine can make excessive heat too. (late timing)

1: bad thermostat. 190 is ok, but it can be bad, even a new one.

try a quality brand like STANT, not dura . etc.

2: it must hold pressure, bad cap>? 12-15 psi

3: gee, did use 50% AF. it will not run right with out AF antifreeze.

4: bad water pump. running old AF causes the impeller to rust to nothing.

5: thermostat up side down, or bleed hole not up hill (jiggle pin,etc)

6: pressure in the hose , does NOT prove flow. only pressure.

7: air flow to RAD bocked, (at A/C condensor or between)

8: bad fan and related parts, varies by engine option not stated.

9: bad fan controls. same.

10: seem like it overheats even PARKED. right? never moved.

11: if it dont overheat moving fast this is a BIG clue. but nobody wants to take that risk of 10 is true. sure.

12: air in block, did you , ignore the side tank and look in side rad for full of AF 100% by pulling cap cold, over and over, each cold cycle

until dead sure its FULL???????

13: BAD TEMP GUAGE, DID YOU USE AN IR PYYO GUN to prove the thing is really overheating

14: is it boiling over, that is steam or hot water blasting to the expansion side tank???? signs/ got real signs of overheating?



15: passes rad leak down test?

16: passes exhaust leak test to rad test? green/blue checked?

17: steam out tail pipe end hot?

18: pinging, (too hot sighs)

19: OBD2 scan tool shows, 240 and the dash gauge and the pyro gun

all agree its 240"

20: sludge packup on sides of water jackets, seen when pump was pulled and NOT CORRECTED (flushed>?)



at the least.

ok one more , fan belts slip?

Apr 30, 2014 | 2000 Jeep Grand Cherokee

1 Answer

Knocking sound under hood of 97 jeep


First I was going to say the valves were damaged from the heat or lack of oil, but that would not make sense if the steering wheel is turned.
The power steering is about the only thing affected by the steering wheel.
I would take a piece of heater hose and use it as a stethoscope to listen around the pulleys for the noise with someone turning the wheel.

Jul 25, 2012 | 1997 Jeep Grand Cherokee

1 Answer

1995 jeep cherokee heater problems


Get jeep up to operating temp
Turn on heater to max heat
Hood feel 2 heater core hoses goint into upper passenger side of engine compartment firewall.
They should feel too hot to hold
If it's not hot, could be 6 things
1. heater control valve is bad
2. Vacuum to heater control valve is bad
3. clogged heater core.
4. Bad thermostat
5. Bad waterpump
6. Needs more coolant (check when system is cold)

Do these things:

1. Disconnect vacuum line from control valve and feel under valve to manually move valve to open position. This should let hot water flow through core. If you now have heat inside, replace the heater control valve. Or you can disconnect the plunger on the heater control that is hooked on to the silver bar on the bottom of it. With it disconnected you can manually move it to the open position. It will always remain on.

2. When system is cold, disconnect both heater hoses going to heater core. hook up a water hose to one side of heater core and flush out any gunk. When you get done, the water should run clear. If you see lots of gunk come out, that was probably the problem. Replacement is like $20-30

3. When system is hot and engine running, squeeze the upper radiator hose (using gloves) when you release it you should feel a surge of water. Proves your water pump is working. If no surge, check thermostat. If thermostat checks good, look at the weep holes at the bottom of the water pump for traces of antifreeze. If you see a trace or stream of coolant, indicates bad pump.

4. As far as testing the thermostat, watch as your engine heats up on the gauge. when it gets to a certain point you will see the temperature rise, then lower, then rise again. This means your thermostat opened properly, cooling the system temporarily, then heated it back up. Replacement is around $5

Try these and see how it goes.

Feb 01, 2012 | 1995 Jeep Cherokee

2 Answers

1998 Isuzu rodeo running hot. filled radiator & reservoir with water & coolant. There is a oily substance dripping from small hose at the bottom of radiator, dont see any water leaking. Just had...


Replace small hose and clamp, that hose come's from your transmission, goes through another tank in the radiator, to keep the transmission fluid cool, hope this was very helpful.

Aug 26, 2010 | 1998 Isuzu Rodeo

1 Answer

I have a 1993 Jeep Grand Cherokee. I just replaced the heater core that started leaking. I put in another one and now my heater does not put out enough heat. Even before I changed the heater core, my...


not sure on your cherokee but often there is a valve in the heater hose line just as the water enter the heater core .. the valve is controled by the the selection of heat or cool .. those valves frequently clog up and need replaced ... you might also have an air lock in your heater core .. if air is trapped in there then it doesnt want to come out and it occupies a portion of the heating surface .. you can take the top heater hose loose with the engine running but not hot .. that will blead off any air in the core .. it will also show you if you have a clog .. you should have lot of water flow thru there with the engine running .. you may also have a bad thermostat .. if that the case then the engine wont get up to temperature preventing the heater from working properly ..

Feb 22, 2010 | 1993 Jeep Grand Cherokee

1 Answer

No Heat 1988 Jeep wrangler


any time you do not have hot water in the hoses to the in side of the vehicle, your water has quit either due to you having only water in the system and it froze in the winter and you started it . or the propeller just broke of old age. make sure u dont have a check valve in the hoses going to the heater core in side the car. valve would be under the hood somewhere in the duration of one of the two hoses, which is the feed. this should do u good

Feb 07, 2009 | 1988 Jeep Wrangler

1 Answer

96 Jeep Country-Heater blowing warm; NOT hot


unless you got visable signs of leakage its not heater core, but it could be pluged with sediment. take off both heater hoses and flush it both ways until it runs clear. you can also mix a little baking soda and water and pour in core and let set for a while and then flush.

Jan 11, 2009 | 1996 Jeep Cherokee Country

1 Answer

My 1996 jeep grad cherokee larado is over heating


You have air trapped in the cooling system. This is a 4.0 right? pull the heater hoses to the rear and let the air out. Run the heater, jack up the front end, rev the eng a few times, this should purge the air

Dec 16, 2008 | 1996 Jeep Grand Cherokee

1 Answer

94 jeep wrangler overheating


Have the cooling system pressure tested. If it holds pressure, that's a good thing. If it doesn't hold pressure, you may have a leaking head gasket. What may be happening is the crack in the head gasket could be blowing hot air into the cooling system causing it to overheat.

Sep 27, 2008 | 1994 Jeep Wrangler

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