2004 impala base model belt grinding noise - Page 2 - Chevy Impala Forums
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post #16 of (permalink) Old 01-08-2017 Thread Starter
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Quote:
Originally Posted by worthirt View Post
It would thaw when the car warmed up actually, as coolant usually gets to 190+ degrees. If the water pump fins were damaged as James pointed out, If the coolant was to thaw now, it doesn't matter as the damage has been done.
So if the fins were damaged, would the sound continue? Or would the water pump cease to properly cool then engine? Would I notice the temperature gauge go up past operating temps?
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The sound would no keep going on. It would make it then free spin. Again at first that came to mind. I however not sure that it is that unless as stated by worthirt it could be that the damage was done but didn't break it down all the way and the grinding you hear is the broken fins in the pump area. However without the Belt and turning the Water pump will clear that up... IF you are able to turn the water pump without a grind or without problem. Meaning it spins well by hand then it isn't the issue....

James

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James
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The sound would no keep going on. It would make it then free spin. Again at first that came to mind. I however not sure that it is that unless as stated by worthirt it could be that the damage was done but didn't break it down all the way and the grinding you hear is the broken fins in the pump area. However without the Belt and turning the Water pump will clear that up... IF you are able to turn the water pump without a grind or without problem. Meaning it spins well by hand then it isn't the issue....

James
That kinda sucks... As I did free spin the water pump several times in both directions. I heard no grinding noise. I will trying again by spinning it faster... I'd hate to say it, but I'm hoping that is the problem. Or else I'm pretty much back to square one.
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Well if you have tried all the pulleys and nothing has a Grinding sounds, Then it almost sounds like something I don't really want to think about. That is, Could be the Motor. Sorry it is hard to say because not there to be able to look over it.. However seeing that it sounds like it is coming from the front area. I would check by taking out the Spark Plugs close to the pulleys and see if there is a Broken Piston inside! Another thing you could do is take all the plugs out and take a Wrench and turn the main pulley and see if the sound is heard. This is without the belt being connected. I bought an Impala for my brother that was in a NO Crank no start state and one thing I wanted to check before buying it was that it wasn't seized. IT wasn't so I bought it, Repaired it and gave it to him. Anyway that is one way of being able to check for that.. However in your case it could check if your problem is Motor related this way... I hope that it isn't

James

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Just noticed something that may be useful. The noise stops at high rpm around 1 to 5 mph.
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Well actually it turns more into a whirring noise
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Well here is a Grinding noise of a Bad Alt in a Impala.. Is this what you hear? It could be even that without your belt on the Alt it won't have noise so the test isn't 100%... Reason because without tension on the pulley it may not have the sound from it. When it gets worse then it would be easy to tell no matter on or off...


Or more like this sound?


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At times even when bad the sound can go away. So that is what made me think that is the grinding you were talking about.... I did a search on youtube for Grinding from motor and Impala came up so Post that....

It isn't what you Drive that matters, It is how you drive it.

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The altinator noise does sound like it actuallly.

I decided to leave the car running for 40 min while monitors all gauges. As the vehicle was left at operating temps the noise became extremely faint. And then something really weird happened. The temp gauge went DOWN a single tick. As if it just got a burst of coolant.
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Considering it reads fine up to operating temp. And i just recently refilled the coolant. Plus i have a minor leak in a radiator tube. I believe i have air in my system
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Yes or could have opened the Thermostat and let that water in the system... Fan kicked on and or there is a lot of different things. As long as you have heat, and your staying in the normal in temp range your car should be ok... If it sounds like that with the Alt grinding. I would get that taken care of soon. As it will or can stop working all together and break your belt or pop it off. IF it comes off while at high speed (Belt moving high speed) could also damage something in the motor.... RockAuto has them starting at 88 with no core to as high as 266 with a 40 core. NOT the Highest Core. Also if your not able to wait for Mail ALT to come in, I am sure there is one at a Auto parts store for around 100 or less with any luck...

James

It isn't what you Drive that matters, It is how you drive it.

James
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Garage
If the alternator could be the culprit as James has mentioned, You could always take the alternator off and bring it to autozone or something like that to have it tested. The machine they used to test mine had a small belt and put tension on the alternator, granted, if the noise is found, they will try to sell you a new one. But the good thing is that you know what the issue is and can make the decision upon where to get a new one.

Rob

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We have a full tank of gas, half a pack of cigarettes, it's dark and we're wearing sunglasses.
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Thanks. I also noticed my front engine fans no longer engage at operating temp... most likely a faulty sensor. Just another thing that needs fixing. Im takig it to a trusted mechanics shop today after work. If he cant help ill have the alt tested at and auto parts store, as you suggested
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About your Fan. I wouldn't fault the Sensor so fast. Rare to have a issue in them... IT could be. However before tossing parts I would check your ground for the fans. I believe they are next to the headlight on the drivers side. IF they are not well connected, Broke, or corroded, Fix the fault and test again. Sorry have bad memory and looking at my car now days don't help because I have ground on both sides of mine. But I think as I said it is on the drivers side behind headlight at the top.

Let us know what the Auto Doctor finds out. Hope after that is repaired all rest is a good bill of health..

James

It isn't what you Drive that matters, It is how you drive it.

James
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