Prius (2004-09) :: Rattling Noise Near Water Pump / Pulley
Aug 31, 2011
My wife calls me yesterday and said she could hear a rattling noise from the engine area, but no other issues presented themselves. Later, I checked the engine compartment for the noise with the engine on and found that the noise was coming from the area of the engine water pump/idler pulley but i couldn't really narrow it much closer. The noise honestly sounds like bearings about to go out. I did see that behind the water pump pulley there was a small buildup of corrosion on the water pump, but no apparent leaks or wetness. The car has the original water pump and idler pulley with 140k. I plan on replacing the water pump, idler pulley and thermostat in the morning. Or is this overkill? I don't want to lose the engine nor do I want my wife to get stranded anywhere.
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On the 06 Prius I have been working on, I noticed a light build up of pink coolant residue on the inside of the ICE water pump pulley. I assumed that this was due to a coolant leak from the weep hole, which points to an impending water pump failure.
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The water pump on my 04 with 132k miles is rattling / wobbling (but surprisingly, not leaking). So I am going to replace the water pump, serpentine belt, and thermostat. The idler pulley seemed fine so I am wondering if I should replace it. What is the failure mode on the idler pulley and how will I know it is going bad without having to check it? Or should I just go ahead and replace it?
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I have a noise coming from the front of the engine. The noise stops once the the thermostat opens and the water pump starts circulating coolant.
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Looks like my mystery growling noise at idle is the WP going bad. Not leaking but making a racket at idle.
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I've got a grinding noise coming from near my water pump. replaced the serpentine belt w no luck. it's got 212,000 miles on it so I'm guessing the water pump is going bad.
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My 2005 Prius sounds louder to me than normal. The car has 117,000 miles on it and is in great condition. Anyways I can hear, maybe, on the gas engine what sounds like a bad water pump or tension pulley, not sure though? I checked the water pump area and there is no visible signs of a leak or dried pink coolant. If the water pump is indeed bad what can I expect at the Toyota dealership cost wise?
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I was hearing some sounds from my engine and opened up the timing covers to determine where the sound was coming from. It sounds exactly like the Sienna with the same 3MZ engine in this video: YouTube ....
While I didn't find the source of the noise, I did find that my water-pump is leaking. My question is, is this water-pump leaking bad enough to be replaced? I do not notice any coolant loss and never had the need to top up.
It appears from this last photo that the pump is leaking through its pulley shaft and not at the interface with the engine:
The timing belt and water-pump were changed 3 years ago with the Gates timing belt kit from RockAuto. The pump at the time didn't look that great quality in its casting compared to an Aisin pump.
I could not feel any play or hear any abnormal sounds from the pump while it was running with the timing covers off.
This is on my 2005 Lexus ES330 with the 3MZ-FE 3.3L V6 engine, same motor as the Gen 5 Camry SE V6.
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How to remove the water pump pulley on a 2003 W8? I removed the 4 bolts but I don't want to go crazy and end up ruining it.
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I have a 2008 Toyota Camry, 4-Cylinder w/ 55,000 miles on it.
Yesterday, when I started the engine I heard a rattling noise. Opening it up and looking inside, it seemed to be coming from the area of the serpentine belt. Looking closer, I saw that the pulley appeared to be wobbling slightly, although it didn't feel loose to the touch.
As I'm out of town on a roadtrip and needed to try to get home, I decided to try to drive it anyway. Aside from the noise itself, the car ran fine - the engine temperature stayed normal, which I kept an eye on closely.
After a bit over 50 miles of this, however, the serpentine belt got thrown off. With my engine temperature rising, alternator not functioning and power steering cut out, I pulled over immediately and shut off the car.
Looking more closely at the water pump pulley, I could see that it was clearly tilted in its alignment in comparison to the other pulleys along the belt's route. This explains the wobbling I saw. Clearly that needs to be repaired, lest it throw off the serpentine belt again.
So, this brings me to my questions here.
Given that the water pump itself seemed to be functioning fine during the drive until the belt got thrown, is it possible that just the pulley itself is broken? Or that it's misaligned?
If so, is it possible to replace / realign the pulley without having a mechanic tear the car apart to get the water pump out?
If these aren't the issue, is it possible that the water pump itself is just misaligned as opposed to broken? If so, can it be realigned without buying a new one?
I'm basically trying to assess
* what exactly is the problem
* whether it is something I can fix myself without a mechanit
* whether I'll need parts and what those parts would be
* how many hours of service I should expect to have to fund if I can't do it myself
Here's a picture of how it looks right now .....
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Is it common to have to shim the water pump pulley? I don't know why but mine seems to have moved back a fraction of an inch. I loosen the belt tension and slide the belt back and as soon as I start the motor, the belt slides forward again. And as I rev the motor, the belt moves even further out onto the edge of the water pump pulley and starts to squeal. All other pulleys are aligned and the belt spins fine on them. I thought about buying a shim kit, but I ordered a new Motorcraft water pump since I have 154k miles on my truck.
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I get a small "squeal" from the engine usually only when it's cold out, and have narrowed it down to the water pump pulley (2nd pulley down from the top). I put a drop or two of WD-40 on the "rod" that runs through the pulley and it stops. I know not to put anything on the belt to avoid contamination but it seems to me that it's the metal bolt that keeps the pulley in place. I stopped by an O'Reilly and had the tech have a look because I was going to try a more viscous grease. He thinks that it's either the pump is starting to fail or that the pulley could have moved out of place. He said I should remove the belt and tug on the pulley.
If it moves then it's loose and needs to be lubed and tightened. If it doesn't then it's a water pump replacement. What do you all think? I don't want to drop a ton of money as it truly only squeals when it's cold, and unfortunately I'm thinking Chicago's gonna have a cold one this year even though after the engine heats up it's goes away. If you have a guess to the problem, what do you think replacement will run me. I'm only at 30,000 miles, and has been garaged until recently so I don't think it's a belt change or pump failure yet.
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My son has a Mustang GT 5.0 that is overheating. I replaced the radiator with a heavy duty 3 core radiator. It had underdrive pulleys so I replaced them with stock pulleys. I put dual electric fans on it. I flushed the block and put a new thermostat and replaced all the hoses (made sure the bottom radiator hose had wire in it so it wouldn't collapse). I put a new water pump and drive belt but it still overheats when sitting in traffic and overheats when driving with the A/C on.
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Need to know the thread pitch and diameter for the water pump pulley bolts? The previous owner of the engine I bought clearly didn't know how to get the fan off as the pulley and plastic fan are both loose so I cannot loosen large nut.
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I own a 2006 Kia Sedona which we bought brand new. Now after five years and 40,000 miles (we don't drive it much) it has developed a rattling noise by the top serpentine pulley. I am afraid this is where the timing chain is. I am not even sure if this vehicle has a chain or belt. Could either one of these be the problem?
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My sister's 2010 corolla with 80k has a rattling. She sent a video. The oil level is fine. She had a belt squeak previously that she had fixed. My concern is a bad water pump. Is there a service bulletin on this that we can confirm?
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I had the doors open while unloading the car this morning and noticed that the brake booster pump just kept running and running and running, plus I can hear a strange, hollow rattling sound somewhere under the car that coincides with the pump. When I say it runs "constantly," I really mean that it runs for 10 seconds (with the rattle), stops for about 5 seconds (silence), runs and rattles for ten seconds again, stops for another five, and just keeps on going for as long as I care to sit there with the door open.
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I own a 2004 V8 and when I have the air going I get a buzzing noise coming from the water pump or something. What is this and is it normal..
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I learned today there are at least two water pumps in my 2006 Prius, and that one of them is leaking. I had the recall done for the electric motor water pump in November. Now, during my scheduled maintenance, they tell me my second water pump has been leaking (slowly). My car has 132,000 miles.
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I just got back from the dealer and was told my water pump was leaking. I was told it was a small leak and that it could only be seen by lifting the car. I opened the hood and noticed some pink crusty looking thing on what i believed to be the water pump. I took some pictures of the water pump, the radiator and overflow level. If you look closely you can see some of the pink crusty stuff around the pump. I poked it with a pencil and it broke apart pretty easy.
First of all if that pink crusty stuff is anything i should worry about? Also if the levels of the fluid in the radiator/overflow tank are good? Is there another sure way i can tell that i even have a water pump leak? I searched around the forum and it looks like the hardest part about replacing the water pump is getting the air out of the system and that the dealer quote is a rip-off.
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My 2006 Prius with 120k miles has coolant seeping around the water pump. I called around to get quotes on replacement cost, but one place said the thermostat should be replaced at the same time, while the other said it shouldn't. (BTW, I will have the belt replaced at the same time).
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