Cold weather - squeaky pulley or belt

Just got through the cold blast here in the southeast and now I have an extremely annoying squeak coming from the serpentine belt or the tension pulley, but cannot pinpoint if it is one or both. The S-Belt was replaced roughly 50k miles ago by the previous owner at the same time as the timing belt (Gates kit). I have no idea if the s-belt tensioner is stock. I used a stethoscope on each pulley and the tensioner pulley definitely sounds rougher than all the others. After reading several comments about the OEM belt problem I'm also considering replacing the s-belt IF it is not a Gates belt, but could use some recommendations (I like to not skimp on quality, but monies are a little tight right now). And of anyone has the Toyota part number for the tensioner pulley by itself, that would be appreciated. I could only find the assembly.

 

I knew my tensioner was bad by putting a wrench on it and it had not resistance

Part number for Tensioner and belt 2006 v8 DC

-16620-0W101 Tensioner Assembly, V-Ribbed Belt

-90916-A2003 Serpentine Belt

 

It's in the community megathread, dude!

• 2000-2006 serpentine drive belt accessory squeal. Noise usually starts happening during cold starts, see here.

At least there's a sold possibility that's it.

 

Thanks. Yeah, i did read through most of that stuff. Must've missed the part number I was looking for. I found the tensioner assembly on Toyota parts website, but was looking for the pulley itself. Not the whole assembly. If toyota doesn't sale the pulley alone I'll just go find the aftermarket version. The comments in the thread seem to point to pretty much any belt not OEM haha.

Edit: the TSB does not provide the stand alone pulley part number. I dont want to replace the entire tensioner. Just the pulley.

 

The part has since been fixed due to problems with the original part design. It's advised to update the entire part - they moved to a different sized pulley which keeps the same belt position, but relieves the problem mentioned in that TSB linked above, from the megathread.

I mean, one of my local dealers has it for $75, is that really over the top, knowing it's OEM, it'll last another 20 years, and it fixes a problem at manufacture? https://autoparts.toyota.com/products/product/tensioner-assy-v-ribbed-belt-166200w101

Edit: Looks like there's an even newer variation since the original TSB was released. New p/n is 16620-0W101, old one was 16620-0W100

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I'll look more into it. Was hoping to avoid getting into timing cover

 

not sure what dealer you have, but this my nearest go to dealer. was why i figured I'd just replace the pulley instead. Cheaper and easier. Used a Dayco pulley on my tacoma's tensioner, two years later no problems.

 

When something is overpriced at the dealers near me because they're doing major markup instead of markdown, I typically use these guys, or these guys. I prefer the 1st link, only because for non-Alabama residents, there's no tax, and if they don't ship for free, adding the coupon FREESHIP will typically add it in the cart. Note: You won't see the final discounted price sometimes until you head into checkout. I typically checkout as "guest" and go from there.

 

Appreciate the help

 

Get a 10$ mechanics stethoscope to pin point which one it is.

 

Grab a can of belt dressing and hit the belt with it while it’s running. If it quiets down, you found your problem. If not, look into idler and/or tensioner.

 

...."I used a stethoscope on each pulley and the tensioner pulley definitely sounds rougher than all the others"......

I was fishing for the part number that was referenced in my original post.

 

If you're super hellbent on not using OEM in this application, here's more info on the Gates part, and the Dayco part.

Dead horse here, but I'd stick with OEM, because I know, without a doubt, the OEM part will last you another 20 years and function exactly as Toyota intended. I assure you the Gates and Dayco part may function to Toyota's spec, but likely won't last half as long. Maybe I'm just a purist, but with me being able to get Toyota for under $80, Dayco running around $60-65 on average after tax+ship, and Gates (38488) running around $55-60 on average after tax+ship, and knowing the part changed to a new pulley size, which means the individual pulleys may or may not be compatible should your truck be running the old part design ...

I get it though. I'd rather spend $30 ($15+ship+tax) at RockAuto for just the Gates pulley and bearing (38001).

RockAuto currently does have one vendor selling the entire Dayco assembly for $28, limited supply, but you're still likely out the door for $40 after tax+ship.

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Meanwhile the dealership I mentioned with no tax and free ship is having a 20% off sale for the next 3 days, @CMPtundra ... https://autoparts.serratoyota.com/products/product/tensioner-assy-v-ribbed-belt-166200w101

Which means you get the OEM part, to your door, for exactly $76.16 because shipping is free, there's no tax if you're living outside Alabama, and you get an additional 20% off due to the sale.

I loaded it up in the cart for shits & giggles because I've been thinking about buying one for myself to have on-hand, I'm waiting for the next winter when I get hit with this issue.

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Missed that sentence my apologies. Toyota parts deal .com and few others can sometimes be helpful to back into part numbers for specific models/years. I have done that a few times for my FJ/Tundra/4R.

 

You are the Toyota Company Man lol . I've been wrenching on, painting, and inspecting this truck since I've had it for five weeks now. If a pulley is squeaking, at this point I'm looking for the easiest way if fixing it. While I enjoy wrenching on my personal vehicles, it can get tiresome at some point. I'm to that point.

I found a youtube video from JDMdriveway, I believe, that shows the pulley I need. Was a Gates brand that I already have bookmarked to buy from Napa. Most likely I'll go ahead and replace the s-belt with a Gates green back at the same time.

 

I'm biased, but I find the first couple bullet points in this thread to be much easier and more accurate than using TPD and other websites.

Gates HD belt is what I'm running.

$35 K060908HD FleetRunner Micro-V Serpentine Drive Belt

K060908HD is the part number for our 2005-2006 with 4.7L

I find replacing the assembly easier. Mostly b/c you remove tension from the belt, move it out of the way, pop free 4 bolts, put new part in place, install 4 bolts, and you're done. No pressing. No swapping. No fighting. No questions about whether you're getting the correct sized pulley - you may get the wrong size pulley, you'll need to measure the new pulley when it comes in to make sure it's the same diameter. I think the improved part uses a 2½" or 3" pulley and the factory part was 4". You're going to have serious issues if the sizes aren't right.

Nothing sucks worse than getting into a job and realizing you have the wrong part. Buy the assembly, and there's no question...

Note: I believe that pulley is reverse-threaded on, also.

 

Just ordered the part from Serra Toyota. Shifty are you saying that you don't have to drain the coolant/unbolt the PS pump/compressor? You can just swap the assembly on its own?

 

TSB says you've gotta do all that.

I suppose if you don't want to, and the pulley on the new part is same as the old in diamter, you could just swap the pulley over.

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Can you report back if it is in fact the same size pulley, bearing, and design (that bolt and dust shield washer seems to be the hang up for most aftermarket pulleys)? I was wanting to avoid the extra disassembly by replacing just the pulley.

 

Oh got it, thanks. In your earlier post you said you find swapping the assembly easier, so I thought your description meant it was just 4 bolts to install the new tensioner assembly.

Will do. I swapped a Gates pulley onto my OE tensioner last year, but it's been squeaking the last couple weeks in the cold weather. So I am going to replace the entire tensioner assembly. My comparison may not be super accurate because it's a Gates pulley, but when I swapped that one in it was the same size as the old one I removed.

 

So the gates pulley from Napa, #36119, was too big by about half an inch (website says 102mm). Went to store, took the pulley out and held it against the existing pulley. Napa did not have a direct replacement that used the dust shield washer.

Drive across town to Advanced and looked at what they had. #900052a was the correct diameter (described as 90mm) and pulley design to keep the factory dust shield washer. Although the brand is Liten's, I was a little more satisfied that the bearing was not a China bearing, but rather a Canada bearing that has the same bearing number as the Daystar bearing/pulley. It was also about $30 cheaper than the Gates pulley from Napa.

Taking a second look I realized the s-belt is already the gates HD belt, so it'll be staying for now.