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  #49  
Old 07-26-2012, 01:49 PM
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I would start with a good cooling sys flush, as frank said, that stop leak stuff will plug up the cooling system.

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  #50  
Old 07-26-2012, 03:13 PM
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Re: 2000 WJ 4.7l Overheating

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I would start with a good cooling sys flush, as frank said, that stop leak stuff will plug up the cooling system.

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As stupid as this question may be, if buying one of those $4.00 flush kits from say Autozone....Is there a way to even hook this up and make it work????

Better stated where the heck would I place the T to hook up the hose and flush her out????
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  #51  
Old 07-27-2012, 01:25 PM
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You install the hose flush kit on a heater core hose... Its worth a shot especially for the cost.

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  #52  
Old 08-01-2012, 10:35 AM
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Re: 2000 WJ 4.7l Overheating

Ok little update for everyone, I put a new radiator in this past weekend the outside temps haven't gotten more than 85* going up the hill. That said it seems to be staying cool, but there's a catch.

When I shut the car off obviously it gets warm cools back down in about 20-30 seconds...I'm assuming that normal

Second. Say I run into a convienance store and shut the car off, any time I shut the car off for that matter. The first probably minut of driving the Fan (mechanical fan) sounds like it's running at the same pace as the engine then mellows out and is back to normal, this happens every time I start the car....I this normal???

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Old 08-01-2012, 01:54 PM
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Re: 2000 WJ 4.7l Overheating

When you shut a hot engine off, there is still a lot of heat coming from the heads and the cylinders, which gets absorbed by the cooling system. So if you start again in a few minuites, it can be that the coolant temperature is higher then normal, but should go down in not too much time. The cooling fan can also run at high speed to cool down the coolant.
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Old 08-01-2012, 04:23 PM
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Re: 2000 WJ 4.7l Overheating

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The cooling fan can also run at high speed to cool down the coolant.
This makes sense to me when the engine is hot....why is it doing it when its cold, not ran for over 12 hrs????
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Old 08-01-2012, 08:11 PM
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Re: 2000 WJ 4.7l Overheating

You said you have the mechanical fan which one is driven from the waterpump shaft right? Could be that the viscous coupling is the problem.
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  #56  
Old 08-01-2012, 09:30 PM
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Re: 2000 WJ 4.7l Overheating

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You said you have the mechanical fan which one is driven from the waterpump shaft right? Could be that the viscous coupling is the problem.
Yes he should have the clutch fan driven off the water pump.

2000 to late 02 clutch late 02 to 04 Hydraulic nightmare.

Does your electric fan kick on?
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Old 08-02-2012, 09:31 AM
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Re: 2000 WJ 4.7l Overheating

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Yes he should have the clutch fan driven off the water pump.

2000 to late 02 clutch late 02 to 04 Hydraulic nightmare.

Does your electric fan kick on?
Correct, the fan clutch is new, maybe its faulty....

Yes the electric fan works properly.
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