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Unread 08-27-2013, 12:46 PM   #1
Gravey7
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over heating issue help

ive got a 2005 grand Cherokee Laredo with a 4.7 and its been acting up lately! as long as its moving mostly its fine but if its sitting still while running or im stuck in traffic the temperature gauge starts climbing which makes me real nervous. If any one has had this same problem and found the solution or has any insight it would be greatly appreciated.

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Unread 08-27-2013, 01:09 PM   #2
Jeepforthewin
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How is your coolant level looking?
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Unread 08-27-2013, 02:25 PM   #3
Gravey7
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good I think? the reserve tank is around half full. also my ac is all messed up it takes forever to blow cold air sometimes doesn't at all or itll come and go, not sure if this might have something to do with my overheating problem or not.
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Unread 08-27-2013, 04:23 PM   #4
R32R1
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That is normal for it to climb in hot weather/ ac/ traffic conditions. If it goes over half, then you have a problem. It should fall just under half while driving.
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Unread 08-27-2013, 04:26 PM   #5
Gravey7
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Its gone 3 quarters and a tad above.
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Unread 08-27-2013, 04:35 PM   #6
Gravey7
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Usually have to crank the heat on full blastto get it down like it says to do in the manual which sucks in the summer time lol
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Unread 08-27-2013, 04:39 PM   #7
R32R1
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Bad water pump. I'd start there and change the thermostat while youre at it.
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Unread 08-27-2013, 05:41 PM   #8
Gravey7
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How costly would that be?
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Unread 08-28-2013, 12:03 PM   #9
R32R1
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I think I paid $150 installed for mine at the dealership
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Unread 08-28-2013, 12:14 PM   #10
JKM
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Do the cooling fan for the radiator come on? It should come when the temperature guauge is around half. If the fan doesn't come on it might be the relay, fan switch or the fan itself.

has anyone done work on your cooling system lately? Are you sure there is no air in your system? Does the heater work (i.e. blow hot air)?
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Unread 08-28-2013, 12:39 PM   #11
Gravey7
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im not a mechanically inclined person what so ever but I just went out turned on the engine let it run and kept on eye on things. theres two fans the one clostest to the motor was spinning the one in directly infront of that did not come on at all I let the temp gauge get just a tad over half before I shut it down. also it seems to slowly be burning threw anti freeze? I just checked it a few weeks ago and it was fine today the reserve tank was nearly empty and what was left in there had gone from green to a yellow is this normal?
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Unread 08-28-2013, 12:51 PM   #12
Gravey7
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the clutch fan was replaced in October, the heater does work throws hot air
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Unread 08-28-2013, 01:56 PM   #13
xrunndonex
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Quote:
Originally Posted by Gravey7 View Post
im not a mechanically inclined person what so ever but I just went out turned on the engine let it run and kept on eye on things. theres two fans the one clostest to the motor was spinning the one in directly infront of that did not come on at all I let the temp gauge get just a tad over half before I shut it down. also it seems to slowly be burning threw anti freeze? I just checked it a few weeks ago and it was fine today the reserve tank was nearly empty and what was left in there had gone from green to a yellow is this normal?
Smell the exhaust if it's sweet smelling gonna have to get inclined or dish out 1000. Doubt it's burning coolent though Probly have a leak most likely the water pump if it's leaking and if it starts to overheat turn the heat on and get out of traffic don't want to turn the engine off that's how you're going to end up disforming things
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Unread 08-28-2013, 02:02 PM   #14
Jeepforthewin
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Go to a mechanic and have the pressure test the system and do a block test. The pressure test will determine if there is a leak in the cooling system and where at and the block test will determine if you have a blown head gasket. Check your oil and see what it looks like. If it has coolant in it you may have a blown head gasket which isn't cheap to fix.
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Unread 08-28-2013, 02:08 PM   #15
Gravey7
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ok thanks guys ill look into these solutions as soon as im able
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