What does a bad water pump sound like ? - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
 
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post #1 of 11 (permalink) Old 10-05-2003, 02:06 AM Thread Starter
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What does a bad water pump sound like ?

Hi, my car has a noise when its running and cold...to me..its best described like broken marbles..its a loose clacking kinda sound...I am guessing water pump...but its not leaking or anything..can anyone back up my thoery or perhaps offer an alternate cause ? Kinda hard to get at this stuff on a 3.2..Id like to go in prepared..thx
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post #2 of 11 (permalink) Old 10-05-2003, 03:09 AM
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Re: What does a bad water pump sound like ?

Quote:
Originally posted by To0nUtZ
I am guessing water pump...but its not leaking or anything..
If there was a leak ur pump seal would be defective. And you would hear a howling noise from the front of the engine with the engine running.

Last edited by crombie; 10-05-2003 at 03:14 AM.
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post #3 of 11 (permalink) Old 10-05-2003, 07:13 AM
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broken marbles... yeah, that probably is the sound of a broken water pump.

How many miles do you have on it?
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post #4 of 11 (permalink) Old 10-05-2003, 09:26 AM
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I have had a few broken water pumps on cars that I have owned and there was never any noise it would just start leaking at the seal. I really doubt it the water pump.
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post #5 of 11 (permalink) Old 10-05-2003, 09:37 AM
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From my experience a bad water pump makes the sound like a squeeling belts. Marble sound usually means bearings. How is your aulternator?
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post #6 of 11 (permalink) Old 10-05-2003, 12:49 PM
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It depends on the car, but I have heard the sound he described enough times that I would say it could be his water pump. A lot of water pumps, when they go bad, do have a higher pitched noise that could be described as a quasi-rattle. Normally, by this time, they are leaking noticeably.

Since his isn't leaking, I'm going to guess it is the compressor for the air conditioning. It may need some PAG oil in it.
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post #7 of 11 (permalink) Old 10-06-2003, 02:19 PM Thread Starter
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mileage

The car now has 170kms on it..I had a 68 camaro with a very similar noise...but didnt have it long enough to narrow it down any further than the timing chain or water pump
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post #8 of 11 (permalink) Old 10-06-2003, 03:02 PM
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If it was a 2.7, I'd say it was a timing chain/guide/tensioner. Does the noise go away as the engine warms up? If so, and you did say it has 170,000 km on it, I would suspect piston slap.
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post #9 of 11 (permalink) Old 10-06-2003, 06:23 PM
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It might not be the water pump. If you are handy with tools, remove your serpentine belt and start the engine. If the sound goes away, it's either the tension pulley, power steering pump or alternator. If the sound is still there, remove the AC belt. The AC clutch or tension pulley could be bad. Restart engine. If the noise is still there, it is either the water pump or tensioner pulley. If you have to change your water pump, do it right and change the belt, pulley and maybe the tensioner since everything is right there when you open her up. Also, an automotive stethescope helps find sources of noise.
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post #10 of 11 (permalink) Old 10-07-2003, 09:46 AM
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Usually when a water pump goes it leaks out the 'weep' hole due to the seal going bad. I've never heard one go that gets real noisy but I won't say it's not possible. I would go with TTrepid's recommendation and try to narrow it down.

Does the noise change with engine rpm? Have you tried turning a/c on and off to see if it changes?
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post #11 of 11 (permalink) Old 10-07-2003, 11:29 AM
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What does a bad water pump sound like ?
CHA-CHING... that and the sound of the credit card machine printing receipts
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