Serpentine Idler and Tensioner Life??

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

I'm at 80k on everything. Tensioner and idler and belt were replaced at 93k and I'm at 173k on the truck.

I poured a little water on the belt this morning after startup during the squeak (didn't have spray bottle).

The squeal went away for about 5 seconds then changed in pitch and loudness. I'm guessing it's the belt. I'll start there and keep the old belt as a spare for my drive to Alaska.
 
for benchmark lifespan data,

I just lost both idler puller and tensioner at 276k. Both original I expect.

I drove on the squeak for about 2 weeks. 6 min commute to work. It gradually got louder. I knew after a recent longer drive that it was close to throwing the belt, and then sure enough the next time I started the engine, it did.

So if you're feeling lazy (like I was) and the squeak is significant, in my experience you've got about 50 miles or so until complete component failure.
 
230k on mine. Slight wobble. Was having alternator issues as well so just swapped it out. Got a Dayco kit with tensioner, belt, and pulley from Rockauto.com
DAYCO KIT533BCK
DAYCO 89255
DAYCO 5060885
DAYCO 89154
 
My tensioner went out at 197K, the pulley bearing was still okay but the tensioner itself got too loose, didn’t put enough tension on the belt and it was squealing. Changing the tensioner is actually a lot of work. Need to remove the alternator and power steering to be able to get it out.
 
FxFormat said:
My tensioner went out at 197K, the pulley bearing was still okay but the tensioner itself got too loose, didn’t put enough tension on the belt and it was squealing. Changing the tensioner is actually a lot of work. Need to remove the alternator and power steering to be able to get it out.
Click to expand...

Yep-pita job on its own if not combined with another job.
My tensioner return spring is worn and it needed replacing for the past 5k miles. Ive been enduring an intermittent start up screech for about 6 -7 months because I planned to do the tensioner during my TB service. Hopefully can make time to get to that this month.
 
I replaced my serp belt, idler, tension assembly/pulley today at about 189,000 miles.
The old idler spun freely with the belt off.
 
i think i need to do this too. Im getting chirping on cold start. I have 196k.
 
Biga27110 said:
i think i need to do this too. Im getting chirping on cold start. I have 196k.
Click to expand...


Yeah might as well knock this out of the way, tensioner, idler, and new belt. I bought mine from @Ranma12
 
FxFormat said:
Yeah might as well knock this out of the way, tensioner, idler, and new belt. I bought mine from @Ranma12
Click to expand...

according to the image in this thread there are 2 idlers do i replace both?
 
These are the part numbers i found, i have a 2005 lx470 do they seem right?

Part No.: 90916-02585 BELT, V-RIBBED

Part No.: 16620-0W100 TENSIONER ASSY, V-RI

Part No.: 16604-50030 PULLEY SUB-ASSY, IDL
 
Biga27110 said:
These are the part numbers i found, i have a 2005 lx470 do they seem right?

Part No.: 90916-02585 BELT, V-RIBBED

Part No.: 16620-0W100 TENSIONER ASSY, V-RI

Part No.: 16604-50030 PULLEY SUB-ASSY, IDL
Click to expand...

Per LexusPartsNow.com yes, I don't buy from them, I just use the website for their vehicle compatibility confirmation.
 
trdcorolla said:
Per LexusPartsNow.com yes, I don't buy from them, I just use the website for their vehicle compatibility confirmation.
Click to expand...

I found all 3 on amazon and it says its genuine so we shall see. Its about half the price.
 
You must log in or register to reply here.

Share this page

Back
Top Bottom