Post timing belt noises

I noticed a noise back in July and at first it sounded like an engine knock. I searched and the threads I came across said it could be the water pump or fan pulley bracket. One thread mentioned the timing being off but I think I wouldve noticed something right away.

This past weekend I changed out the fan bracket and Fan clutch. The reason I ignored the wp suggestion is because I did the TB kit (full OEM/AISIN) 9k miles ago in March. I'm still hearing the noise

What are the chances that it is the wp?

You can see in the photos how close I am to the water pump, only to put everything back and still hear the same noise

I've got some videos of the noise before and after. What's good to use to be able to post videos?

Thanks.

 

Full kit was used including all pulleys and bearings. Prior to doing the timing belt, I replaced the ac idler bearing with a NACHI bearing. And I hear ya with the stethoscope deal.

 

'What are the chances?' 50-50.

 

would need a video to be sure. but alternators can make a noise similar to what your describing. but its rare, they typically whine

 

take the serpentine belts off, start it and listen for the noise, if still there, take it down to the what you see in the first picture and start it and listen.

 

Hey everyone. I noticed my PS pulley was a little wobbly so I tightened the bolt as much as I could. Also if it helps, the noise comes after the engine is warmed up. My PS/belt now squeeks at full steer. The PS might be due for rebuild, but I was already aware. I don't think the noise is the alternator. I can somewhat imagine a little pebble being tossed around by the wp propeller based on.how.it.sounds...maybe

What do yall use to upload videos on here?

I'll work on it sunday if I get a chance.

 

The noise you’re hearing is only one thing - unless you’re hearing two noises. The ps pump vs. ps belt squealing rarely have anything to do with one another. Take a video and post it to YouTube and then on here.

 

You could help isolate by removing a belt and see what changes. See or hear the difference between belts being disconnected.

 

Here is a video of what's going on, this was taken before the fan bracket and fan clutch were replaced. I'll upload a video of the after

https://youtu.be/DpN82E02VkM

https://youtu.be/ZmErNJcxM4c

Being that the noise come around after the engine is warmed up. I'm worried that running the engine after disconnecting the radiator upper hose and belts one by run to diagnose would cause any damage?

@Dalandser I agree with you that the ps belt noise vs ps pump are seperate from what's going on, I was just giving an update of the aftermath. Sorry for the confusion.

Thanks for the help y'all.

 

You can run the engine without any of the accessory belts - maybe taking one off at a time and seeing if you notice a difference.

 

Ok guys, based on the sound heard in the videos, what do y'all think?

I got into a little incident yesterday and I think I have a groinal hernia of some sorts so mobiltiy is very limited now. At the least, I'll try to get a video of what it sounds like now.

Thank you

 

Here is after replacing the fan bracket and the noise

https://youtu.be/TjsJi_uZgaU

 

Remove belts and run.

 

What was stated above. Remove one belt at a time and you can pinpoint if it’s a driven accessory issue. If all belts are off and it still makes it? Then your looking for an issue in the timing belt area.

 

Will do. Thank you

 

If it makes you feel any better, I don't hear anything pointing directly to the water pump.

Amy truck is old and noisy too so really yours sounds much like mine. I think I hear something that sounds a bit like my what my alternator sounded like with a bad diode maybe but you have no charging issue. Concentrate on roughness of every component and if youcan bring the alternator to the shop and have them spin it up and listen to it by itself.



many years ago using their service like that was commonplace. I kinda miss it, I knew the guy that owned it as he was the Dad of a kid near my age. Nostalgia, sniff.

 

Alright fellers.

I got an opportunity on Monday to take each belt off and listen. After all belts were off I narrowed the noise down to being behind the TB cover. At that point the engine was at operating temp so I could not remove the upper hose in order to take off the TB cover without making a hot mess.

Next time I will remove all belts and TB cover, put the upper hose and belts back on and run it with out the TB cover to see which pulley wheel is the culprit.

It's frustrating to deal with this when you use all oem products in order to avoid these kind of issues. Cheers to the weekend!

 

You can run it without topping off the coolant long enough to get a look at the area you think the sound is coming from - just run it for 30 seconds and you'll probably get an idea whether you can determine if having the timing cover on or off makes a difference. I ran my engine before it had any to make sure it was running right and all is hunky dorey still with keeping the coolant temp so I didn't wear out the water pump.

 

So you had changed both the idler wheels and the water pump in March along with timing belt and still have same noise as before opening up the area?

That is unusual.

 

@cruxofthebisquit

Let me clear the confusion.

I did the timing belt and wp kit full oem/aisin back in March before I took a trip out to Phoenix.

I had no issues or noises before or after the job, but it was probably due anyways and it's cheap insurance.

Then fast forward to July(about 7k miles later) I start hearing noises as described. I I started researching and was thinking that it would be the fan bracket. I used a stethoscope but it was still somewhat difficult to pinpoint.

So I changed the fan bracket and fan clutch and still heard the noise afterwards. I have narrowed it down to being behind the tb cover after removing all belts and loosening the tb cover which allowed the noise to amplify. I will investigate further with the tb cover off and have the truck run. Stay tuned

When this is all said and done, it will boil down to whether or not it's adamant I replace the said issue (bearing, etc.) In fear of it failing before the next scheduled interval or let it be and hope it lasts. Yea I'm sure I can get a replacement from Amazon with no problems but the thought of doing the labor twice sucks. The only good part is I'll be able to do the job alot quicker than before