I ended up replacing both ac idler pulley's with aluminum ones from AD. Also put on a new belt. Sound went away and no more issue then as I'm standing there I see dexcool on the garage floor. Oh crap! As I look closer and closer I can tell it is coming from behind the main pulley running the water pump. So, my day went from 30 minute belt/pulley change to about 3 hour water pump change.

 

what do you do when the piece of **** torx wont loosen the piece of **** bolt without rounding it out because some piece of **** tightened it with a ******* machine? ****!

 

Great thanks

 

Tried this out today since I was going to change out my belts anyways. Did them all except for the A/C idler. I let the car idle for a bit after, and it was instantly noticeable that it was a bit quieter. I can hear more valvetrain running, but that sounds alot better than pulley squeak.

Only problem I noticed was a bit of excess grease on the water pump pulley. I used some Valvoline Durablend grease. It looks like its dark blue in color, and is rated for up to 400*. I wiped the pulley/s down pretty good, so I'm wondering if this particular grease isn't good enough.
-Joel

 

IT WORKS!!!

I did both the a/c idler and tensioner. Thanks Yall, saved me a hundred bucks!

 

Works perfect. Thanks. $2.99 for grease was was well worth it.

 

What kind/brand of grease did you use?
It's been over a week, and yet I still get a bit of grease spray from the tensioner pulley on the water pump.
-Joel

 

Is my pulley making the noise that I'm hearing? It's like a hissing/whistling noise when under 2k rpm.

 

I've had two LS1's, both made the same noise, sounds like a bird chirping.

 

Yeah you could say that it sounds like that. Is it the pulley from this thread?

 

3 years later and this thread is still useful, thanks for the great info!

I noticed some corrosion on my pulley after investigating where the squeaking was coming from. I have temporarily sprayed it with some garage lube but once this AZ heat starts to go away I will be greasing

 

I'm in the same boat. I cannot get that T50 bolt off and its the last pulley I need to replace. Any help on how to get it off without stripping it would be amazing.

 

what grease every one using ?

 

I do this same thing on my snowmobile wheel bearings in the skid. I would suggest a good high temp wheel bearing grease for these.

 

just done grease this small tenstioner pulley on my lt1, it bone dry. btw I pop both gasket on both side and grease it nicely. any one here have to grease both side ?

 

Well I ended up trashing the heads on the T50 screw. The dealership said I can't order the bolt by itself, I need to order the a/c idler pulley to get it. Is this correct?

Also, whats the thread specs and length for this bolt? I think I'd rather get something that works better from McMaster-Carr

 

i regreased my pulley, everything went smooth... i went to put it on and tighten the torx bit ..its all good, but now the pulley dosent want to spin, its like the two plates are wedged and stuck, did i put this thing on backwards(is there a front and a back)? or are the plates not right? the bolt seems to be straight, i dont know what the problem is ..please advice?

 

There is no front or back. I'd take it back off and see that it spins in your hand. Hold the center and turn. Then re install.

 

i did that it spins in my hand but not on when its tightened on the car.. ?? what am i doing wrong?

 

anyone?