D1-SC strange noise...

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Oct 6, 2009 | 01:36 PM

'Trust'

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From: Eternity

D1-SC strange noise...

My blower has been making a weird noise lately. When I start the car it whines, but intermittently, almost like a squeaky pulley. When it warms up it sounds fine, any ideas of what this could be? I talked to ProCharger about having to have significant tension on the blower to stop slip and they said the bearings can take it no problem, but I'm a little concerned, thoughts?

Oct 6, 2009 | 01:43 PM

El_Diablo

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From: Guthrie, Oklahoma

You've been over-driving it as well haven't you?

Take it off and open it up ASAP. I saw this recently in a post somewhere on another forum and it was the bearings. Catch it before it's too damaged.

Oct 6, 2009 | 02:02 PM

'Trust'

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From: Eternity

Nah, it is spinning at 59,000, max is 62,000.

Oct 6, 2009 | 02:10 PM

'Trust'

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From: Eternity

Hmm, well just talked to ProCharger, they said if it's a bearing, it will be pretty much gone quickly. This has been going on for a month and has been to the track twice and probably had 10-20 WOT pulls on the dyno/street. They suggested an idler pulley bearing, pulling that off tonight and checking it out, could be possible.

Chalk one worthless thread up for me.

Oct 6, 2009 | 02:44 PM

BIG_MIKE2005

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From: Skiatook, OK

Not worthless if you get it figured out & others know what to listen/watch for on theirs

Oct 6, 2009 | 02:46 PM

LS1RedZ

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Is it like a chirp sound?

Oct 6, 2009 | 03:17 PM

03supercobra

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From: edmond, ok

Sometimes you can spray a little WD40 on the different idlers when you first start it up, and thatll let you know which one is squeaking.

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Oct 6, 2009 | 04:14 PM

ChevyChad

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From: Savannah, GA

Quote:

Originally Posted by 01 Red WS6

If you had the F1A this wouldn't be a problem

Oct 6, 2009 | 04:24 PM

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'Trust'

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From: Eternity

Quote:

Originally Posted by LS1RedZ

Is it like a chirp sound?

Basically yea.

Quote:

Originally Posted by 01 Red WS6

If you had the F1A this wouldn't be a problem

So true!

Oct 6, 2009 | 04:46 PM

#11

LS1RedZ

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From: Waco, TX

Hmm I have been hearing the same thing. Damn it!

Oct 6, 2009 | 04:53 PM

#12

'Trust'

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From: Eternity

I'll pull my idler off tonight to see if thats it and let you know.

Oct 6, 2009 | 05:52 PM

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ZLEEPER

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From: spring, TX

My F1A does it on decel sometimes... Brand new set up. I know this doesn't help, but you are not alone in chasing the mysterious squeak.

Oct 6, 2009 | 06:17 PM

#14

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From: Knoxville, TN

The idler bearings go bad all the time, especially when you tension the crap out of the belt.

Oct 6, 2009 | 07:48 PM

#15

'Trust'

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From: Eternity

Well the idler seems a little stiff, if I spun it with my finger it will spin about 1 - 1 1/2 revolutions. Doesn't seem right to me, thoughts? Also, I did found out that wasn't the sole squeak. Took the blower off and started the car, same thing, I have a culprit somewhere.

Last edited by 'Trust'; Oct 6, 2009 at 07:53 PM.

Oct 6, 2009 | 08:00 PM

#16

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They are sealed bearings so they wont just free spin, if it feels gritty or rough then they are bad. They are just GM A/C compressor bearings and easy to get and change.

Lot of other pulleys to squeak, take the main belt off and try it for a bit to make sure its from the front, it wont hurt to run it without the belt for a minute or so if the engine is cool.

Oct 6, 2009 | 08:12 PM

#17

conan

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From: Back in the Burg

Do you still have the A/C? If so spin the clutch with the belt off. Did you spin the spring tensioner pully for the serpentine belt?

Oct 6, 2009 | 09:06 PM

#18

'Trust'

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From: Eternity

Yea, I thought about taking the serpentine belt off, and a/c belt off to see and leave the blower hooked up. I'll give that a shot.

Oct 6, 2009 | 10:19 PM

#19

laughatrice

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Interesting I've got an F1A (fbody) and the idler pulley has been acting up every since I changed the belt last week. It ate the new belt at the track swaped it again with less tension and made a 3 passes at the track 4 WOT pulls at the dyno and then the idler failed. I haven't seen it yet but I from what I heard it was fairly dramatic and actually stalled the engine smoke and rubber everywhere.

I'm assuming the idler pulley seized up I had been tightening the **** out of it lately. I was told the same thing as you regarding tension worst you'll do is f the belt up unless you happen to bend the idler pulley

. I ordered a whole new idler pulley assembly from procharger plus one of the goodyear belts from summit (not suppose to stretch as much). I believe I caused this when I tightened the belt the weak link is the idler pulley I think it gets bent.