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  #1  
Old 06-08-2010, 04:18 PM
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Bad Waterpump?

I opened my hood yesterday and noticed orange fluid all over my clutch fan and pulleys, my radiator fluid reservoir was low and my temp gauge reached half point and climbing, so the only thing i can think of is my water pump.

Opinions? is this something i can do in the parking lot with basic tools? I have never changed a pump out but can't imagine it's all that difficult.

Anyone that has changed one out on there 4.7 please advice, thanks.
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Old 06-08-2010, 04:24 PM
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Re: Bad Waterpump?

4.7L




The water pump on 4.7L engines is bolted directly to the engine timing chain case/cover.

A gasket is used as a seal between the water pump and timing chain case/cover.

The water pump can be removed without discharging the air conditioning system (if equipped).


1. Disconnect negative battery cable from battery.
2. Drain cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE). Do not waste reusable coolant. If solution is clean, drain coolant into a clean container for reuse.
WARNING: Constant tension hose clamps are used on most cooling system hoses. When removing or installing, use only tools designed for servicing this type of clamp, such as tool 6094. Always wear safety glasses when servicing constant tension clamps.

CAUTION: A number or letter is stamped into the tongue of constant tension clamps. If replacement is necessary, use only an original equipment clamp with matching number or letter.


3. Remove accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - REMOVAL).
4. Remove lower radiator hose clamp and remove lower hose at water pump.
5. Remove seven water pump mounting bolts and one stud bolt.
CAUTION: Do not pry water pump at timing chain case/cover. The machined surfaces may be damaged resulting in leaks.


6. Remove water pump and gasket. Discard gasket.
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Old 06-08-2010, 04:24 PM
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Re: Bad Waterpump?

I would think that too. Just check for loose hoses too. You never know.
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Old 06-08-2010, 04:31 PM
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Re: Bad Waterpump?

Thanks fellas, not having my garage and tools makes me doubt my mechanical skills, looks like it can be done without removing the radiator which i was dreading on doing.
I will buy the tools i need and it seems like the pump is cheap on Rockauto.
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Old 06-08-2010, 05:18 PM
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Re: Bad Waterpump?

check your radiator cap for failure as well, they do break and spray coolant all over
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Old 06-08-2010, 05:21 PM
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Re: Bad Waterpump?

yeah i had spray from my cap. i also then had spray from the hose the goes from the fill tank to the radiator. add a ty-wrap o that one.
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Old 06-08-2010, 07:48 PM
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Re: Bad Waterpump?

Fill and check the system before taking the water pump off. 9 times out of 10 it's just a hose which is much easier to replace than the pump.
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Old 06-08-2010, 07:57 PM
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Re: Bad Waterpump?

Generally speaking a water pump isn't going to throw coolant all over the engine compartment when it starts to fail. Unlikely the actually seal between the pump and engine would fail. The weep hole will start to drip as the bearing fails. You'd hear it long before that amount of coolant leaked. My guess would be a hose or the radiator cap as already mentioned.
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Old 06-09-2010, 07:35 AM
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Re: Bad Waterpump?

Will check the hoses and cap when I get home, my engine compartment was hotter than normal so it made it harder to check the cooling system.
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Old 06-09-2010, 11:24 AM
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Re: Bad Waterpump?

I had that happen to my 07 4.7L. It was the radiator cap. I had it replaced under warranty and it leaked again, wound up buying an autozone one and it never leaked again. Check your cap first.
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Old 06-09-2010, 04:36 PM
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Re: Bad Waterpump?

Radiator cap seems fine with no signs of leak and the upper and lower hoses seem fine, so it definitely has to be the pump unless it's the thermostat that caused the problem?
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Old 06-09-2010, 04:51 PM
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Re: Bad Waterpump?

TRANSMISSION COOLER LINE QUICK CONNECT FITTING DISASSEMBLY/ASSEMBLY


DISCONNECT





1. Remove dust cap by pulling it straight back off of quick connect fitting.
2. Place disconnect tool Special Tool 8875A onto transmission cooler line with the fingers of the tool facing the quick connect fitting.
3. Slide disconnect tool down the transmission line and engage the fingers of the tool into the retaining clip. When properly engaged in the clip, the tool will fit flush against the quick connect fitting.
4. Rotate the disconnect tool 60 to expand the retaining clip.
5. While holding the disconnect tool against the quick connect fitting, pull back on the transmission cooler line to remove.

CONNECT





1. Align transmission cooler line with quick connect fitting while pushing straight into the fitting.
2. Push in on transmission cooler line until a “click” is heard or felt .
3. Slide dust cap down the transmission cooler line and snap it over the quick connect fitting until it is fully seated and rotates freely . Dust cap will only snap over quick connect fitting when the transmission cooler line is properly installed.
NOTE: If dust cap will not snap into place, repeat assembly step 2.
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