pully dohickey thingy what is it ??

decavo · 08-17-08, 04:02 PM

on a 3FE engine beside the a\c comp there is a roller? the a/c belt ride just on top of it there is no grove for the belt it just sits ther what is it's function? should this be spinning with the engine running? Mine is not and I have this rubbing noise up front. I am thinking this is the culprit. It make more noise with the truck around 1700 to 2000 rpm and when I leave my foot off the accel the noise stops.

I have checked the wheel bearing and repacked them. Nothing in there leads me think there is a problem there. Calipers and rotors look O.K. Even had a mech look at these parts so I feel they are O.K.

thanks D

The Pea · 08-17-08, 04:27 PM

decavo,

are you referering to the A/C idler pulley? If so, check if everything is alligned proper and flush. Quick optical check from on top should suffice. If the bearing is dry it would make a screeching sound at or above certain RPM. Sprinkle some water on the belts and see if that makes it go away or lessens the noise. Worth a try

CJF · 08-17-08, 05:15 PM

Quote:

Originally Posted by decavo

should this be spinning with the engine running? Mine is not

Is it seized, or can you spin it easily by hand?

CJF · 08-17-08, 05:22 PM

Just went and checked on my own rig out of curiousity and the d*mn thing's pretty much seized up!

VERY hard to rotate by hand, even with the belt pulled away from it.

Curtis

jonheld · 08-17-08, 05:25 PM

That's the AC idler pulley. When the compressor kicks on you'll see the belt ride on that pulley. With the engine running and AC off, it JUST misses the roller.

decavo · 08-17-08, 05:54 PM

yhe idler will spin but barely. it only squels at certain rpm . I need to listen when the a/c is on for the noise. with the windows down..

CJF · 08-17-08, 06:34 PM

Quote:

Originally Posted by decavo

the idler will spin but barely.

Pretty sure that's NOT ok. Group buy??

Curtis

decavo · 08-17-08, 09:49 PM

need to see what dan is charging

The Proton · 08-17-08, 10:01 PM

Mine's been missing since I bought the truck, with no ill effects. That being said, I assume Toyota put it there for some reason, so I would be interested.

08-17-08, 04:02 PM	#1
decavo IH8MUD Regular Join Date: Jul 2006 Location: hillbilly desert rat Posts: 330 Blog Entries: 2	pully dohickey thingy what is it ?? on a 3FE engine beside the a\c comp there is a roller? the a/c belt ride just on top of it there is no grove for the belt it just sits ther what is it's function? should this be spinning with the engine running? Mine is not and I have this rubbing noise up front. I am thinking this is the culprit. It make more noise with the truck around 1700 to 2000 rpm and when I leave my foot off the accel the noise stops. I have checked the wheel bearing and repacked them. Nothing in there leads me think there is a problem there. Calipers and rotors look O.K. Even had a mech look at these parts so I feel they are O.K. thanks D __________________ 91 running 33 bfg's hillbilly roof rack,air lockers,Tube bumper,hurcilined, http://www.flickr.com/people/desert_adventures/ I don't give a damn for a man that can only spell a word one way. decavo's custom jewelry ,vegan soaps, fragrance oils,lip balm, lotions all natural products

08-17-08, 04:27 PM	#2
The Pea IH8MUD Rookie Join Date: Feb 2007 Location: Fiji Posts: 39	decavo, are you referering to the A/C idler pulley? If so, check if everything is alligned proper and flush. Quick optical check from on top should suffice. If the bearing is dry it would make a screeching sound at or above certain RPM. Sprinkle some water on the belts and see if that makes it go away or lessens the noise. Worth a try __________________ 1991 VX Ltd HDJ 81 with Kid Seat, working e-Lockers, Icemaker + Seatheater and Sugarcane Train Horn And soon: Nissan Cedric Brougham VIP "For The Bling In Your Life"

08-17-08, 05:25 PM	#5
jonheld IH8MUD Lifer Join Date: Dec 2006 Location: New York, NY TLCA# 5980 Posts: 1,225	That's the AC idler pulley. When the compressor kicks on you'll see the belt ride on that pulley. With the engine running and AC off, it JUST misses the roller. __________________ Jon Held 1991 FJ80 "Lumbering White Rhino" Times Square, New York, USA TLCA# 5980 http://gclcny.com/jh/ Buy your FJ80 FSM here: http://gclcny.com/jh/fsm.html

08-17-08, 05:54 PM	#6
decavo IH8MUD Regular Join Date: Jul 2006 Location: hillbilly desert rat Posts: 330 Blog Entries: 2	yhe idler will spin but barely. it only squels at certain rpm . I need to listen when the a/c is on for the noise. with the windows down.. __________________ 91 running 33 bfg's hillbilly roof rack,air lockers,Tube bumper,hurcilined, http://www.flickr.com/people/desert_adventures/ I don't give a damn for a man that can only spell a word one way. decavo's custom jewelry ,vegan soaps, fragrance oils,lip balm, lotions all natural products

08-17-08, 09:49 PM	#8
decavo IH8MUD Regular Join Date: Jul 2006 Location: hillbilly desert rat Posts: 330 Blog Entries: 2	need to see what dan is charging __________________ 91 running 33 bfg's hillbilly roof rack,air lockers,Tube bumper,hurcilined, http://www.flickr.com/people/desert_adventures/ I don't give a damn for a man that can only spell a word one way. decavo's custom jewelry ,vegan soaps, fragrance oils,lip balm, lotions all natural products

08-17-08, 05:22 PM	#4
CJF IH8MUD Lifer Join Date: May 2005 Posts: 3,444	Just went and checked on my own rig out of curiousity and the d*mn thing's pretty much seized up! VERY hard to rotate by hand, even with the belt pulled away from it. Curtis

08-17-08, 10:01 PM	#9
The Proton IH8MUD Rookie Join Date: Apr 2005 Location: San Francisco Posts: 32	Mine's been missing since I bought the truck, with no ill effects. That being said, I assume Toyota put it there for some reason, so I would be interested. __________________ '94 TLC w/OME hvy, snorkel, hanna sliders, kaymar rack, etc, etc.

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