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Old 05-21-2008, 03:28 PM   #1 (permalink)
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Default Will a broken water pump make noise?

My coolant system isnt preassurizing.

example after operating the car for 20 mins i pop the hood and my hoses are still soft. I am able to take my rad cap off without releasing any air/preassure. Both my upper and lower hoses are hot. My car isnt over heating and operating at a normal temp.

if my water pump is busted would it make any noises?
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Old 05-21-2008, 03:34 PM   #2 (permalink)
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Whats the milleage of your car/engine? did you do any recent work on your car? Is there enough water/coolant in your engine and rad? do you see any leaks under your car from coolant? and last does it look like you have antifreeze in your oil? Depending on your water pump if blades deterioate over time from antifreeze it will still spin but not much coolant will get pumped thru the system.
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Old 05-21-2008, 03:41 PM   #3 (permalink)
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motor was rebuilt 1k miles ago. there is enough coolant in the rad and overflow. no leaks under my car. and no coolant in my oil that i can see.
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Old 05-21-2008, 03:46 PM   #4 (permalink)
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did you bleed your cooling system? it seems like you just have a big ass air bubble in it
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Old 05-21-2008, 04:13 PM   #5 (permalink)
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yes i bled it for 30 mins when i swapped motor.
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Old 05-21-2008, 05:13 PM   #6 (permalink)
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does your heat work? like inside heat? cause when the waterpump goes the heater core doesn't get its supply
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Old 05-21-2008, 05:33 PM   #7 (permalink)
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start the car and take off the rad cap, after it gets to normal temp look and see if you can see the water moving in the rad.
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Old 05-21-2008, 05:41 PM   #8 (permalink)
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i got heat

and ill try the movement thing later.
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Old 05-21-2008, 05:44 PM   #9 (permalink)
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has it overheated yet?? see if theres some moisture building up at the bottom timing belt cover if your waterpumps leaking it'll be coming out around there..

if it hasn't overheated I'd leave it alone haha, are the radiator hoses and such new? jw
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Old 05-21-2008, 05:58 PM   #10 (permalink)
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Water pump doesn't pressurize the system, it just keeps things moving enough to let the radiator do its job. The expansion of the coolant mix is what causes pressure.

My car doesn't generate any perceptible pressure, ie. it doesn't go PSSHHH when I pop the cap, but I do see a difference in coolant levels in the overflow.

There was a time when it had a small leak at the radiator on the lower hose, when the coolant expanded it would push out but that's all I would lose.

Never has my system been like that of say, a Trailblazer. Pop the overflow cap on that sucker fast enough when it's hot and you better have 2nd degree burn treatment on hand. It sprays EVERYWHERE.
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Old 05-21-2008, 05:58 PM   #11 (permalink)
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no it hasnt overheated at all.

hose is new so are the clamps
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Old 05-21-2008, 05:59 PM   #12 (permalink)
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Quote:
Originally Posted by green_hornet_96 View Post
Water pump doesn't pressurize the system, it just keeps things moving enough to let the radiator do its job. The expansion of the coolant mix is what causes pressure.

My car doesn't generate any perceptible pressure, ie. it doesn't go PSSHHH when I pop the cap, but I do see a difference in coolant levels in the overflow.

There was a time when it had a small leak at the radiator on the lower hose, when the coolant expanded it would push out but that's all I would lose.

Never has my system been like that of say, a Trailblazer. Pop the overflow cap on that sucker fast enough when it's hot and you better have 2nd degree burn treatment on hand. It sprays EVERYWHERE.

alright good to know. i guess mine is fine since i have heat and both top and bottom hose are hot, and i havent over heated yet.
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Old 05-21-2008, 06:03 PM   #13 (permalink)
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if it was busted it would sound like marbles in a coffee can.

best thing to do is take off the rad cap then start the car. let it run like that and watch the radiator, when you see the coolant flush into the system start adding more in slowly until its full, the you know you are done.
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