squeak with rpms

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squeak with rpms - 8/12/2007 4:08:38 PM

agent305

Posts: 148
Joined: 9/13/2006
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hi. i have a 2000 blazer, and i have this squeak that i cant find. i hope someone here has dealt with this before.....

ok, it sounds like crickets. and it only squeaks when the truck is hot from driving, not idling. the squeak goes with the speed of the engine, you know? now say i wake up and go driving...it takes about 30 minutes before it starts the noise. after driving for 30 minutes....it will not squeak while idling or in nuetral.
now say i drive for an hour....and idle, it WILL squeak in idle, and in nuetral, and still at the engine speed. see what im sayin?

ok what i did so far.......
replaced the belt, which did absolutely nothing.
sprayed wd-40 on the pullys. (not on the part where the belt is....like where they bolt on)
and thats it, lol.

ok here is some more info.....
i know its hard to find out where a noise is coming from....but, this noise is definatly coming from more of the passenger side. if its doing it in idle and you open the hood.... it almost sounds like its the tensioner.
but if you lay under the front....it sounds like its the crankshaft.( i think its the crankshaft. the big wheel behind the crankshaft position sensor.)
and....if you lay under the passenger side, it sounds like its comin from in the tranny near the starter.
so i have no clue. im actually gonna take a video and put it on youtube so someone can hear it lol.

one thing that worries me is that......when i bought the truck, the tranny was f'd up and the dealer replaced it with one from a junkyard.

any ideas would be helpfull!!!!!
please help!!!!!!

Post #: 1

RE: squeak with rpms - 8/14/2007 7:31:10 AM

agent305

Posts: 148
Joined: 9/13/2006
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ok yesterday i did the belt tensioner assembly and it didnt help at all

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Post #: 2

RE: squeak with rpms - 8/14/2007 8:11:07 AM

agent305

Posts: 148
Joined: 9/13/2006
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ok after searching for "squeak" and "squeek" and reading every post on here, lemme explain some more....

it squeaks in everything. if it stops....sometimes you can rev the rpms and it will come back.
its like a...... cheep cheep cheep cheep.....kinda noise. like crickets or birds.
last night i found out that....after drivin for a while....if i stopped, put the e brake on, and shifted from neutral to drive withoput steppin on the brake....it cheeped once.
so this morning....of course i couldnt get it to do it. its so damn annoying i dont wanna drive it. plus already....i went thru 2 tanks of gas gettin the truck hot enough to do it so i can at least find out where its comin from.

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Post #: 3

RE: squeak with rpms - 8/14/2007 8:12:35 AM

Chevy Lover

General Tech Moderator
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Joined: 6/11/2006
From: Vancouver. B.C. Canada
Status: offline

I'm off to work right now so I would quickly suggest removing the belt completely after it's warm and see if the squeak is still there.

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Post #: 4

RE: squeak with rpms - 8/14/2007 8:18:08 AM

lennyblazer

Posts: 1988
Joined: 5/6/2007
From: Appleton, WI / Houghton, MI
Status: offline

It might just be the belt or it could be a pulley wheel somewhere in the serpentine belt system. I would try shooting some WD40 on the pulley hubs (the part the pulley spins around) and see if the squeak goes away. If that doesnt work find some belt dressing that works on serpentine belts and try that. If none of this helps then it is probably something in the fan clutch or the ac compressor, maybe even a water pump going bad.

_____________________________

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4.3L Auto. 3.73Gears

http://www.cardomain.com/ride/2358267

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Post #: 5

RE: squeak with rpms - 8/14/2007 8:26:31 AM

agent305

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Joined: 9/13/2006
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thank you!
i did wd 40 the pullys, got a new belt and a new tensioner assembly.

someone else told me to take off the belt and see if it still squeeks, but the thing is.....even in the 5 seconds it takes to remove the belt....that gives it enough cooling time to stop the noise .... until i drive again.
this is a hard problem to diagnos.

but i will try that chevy lover, have fun at work.
anymore ideas please tell me!

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Post #: 6

RE: squeak with rpms - 8/14/2007 12:37:31 PM

agent305

Posts: 148
Joined: 9/13/2006
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maybe if someone can tell me everything that turns with the speed of the engine when you idle or are in neutral. cuz whatever it is it is def turning with the speed of the engine. does the transmission still spin in neutral? listening today....again it really sounds like it comes from the passenger side. but i cant tell if its in the engine compartment or under the truck. but what stinks is it only does it under load, will do it in neutral if i drive around for a hour but damn hows the 2.75 a gallon gas doin

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Post #: 7

RE: squeak with rpms - 8/14/2007 1:43:44 PM

agent305

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Joined: 9/13/2006
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ok how about the accelerator pedal wire?? i been reading that that can squeak too? but would it squeak along with the engine?

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Post #: 8

RE: squeak with rpms - 8/16/2007 5:49:43 AM

agent305

Posts: 148
Joined: 9/13/2006
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hi, i have an update on this problem if anyone is following it.....
last night i found out another thing.....
if and when it makes this noise in idle.....it does it only for a few minutes, so last night...when i was again tryin to figure out where it is coming from....i just reved the engine quick to try to get it to squeak again....
what i noticed was....when i reved the engine, lets say just to like 1500 or so, you know, just a quick rev...when the tach needle dropped back down...it didnt drop entirely smooth. know what i mean....it like, went down in increments....
so....every increment....it squeeked.
which kinda makes me think its in the cap/distributer somewhere. right now i have the cap and rotor off and sprayed wd40 in it to see....
so if the squeek is following the tach needle perfectly....does it sound right that its in the distributer area???

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Post #: 9

RE: squeak with rpms - 8/16/2007 9:50:26 AM

agent305

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Joined: 9/13/2006
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ok great that didnt do nothin.
but i got it to make the noise constant when idleing...i covered the grill and put on the ac....you know?

anyway......can someone tell me what is more lieky to squeek when it gets hot....the fan clutch, or the water pump?
also....... is the crankshaft supposed to wobble?

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Post #: 10

RE: squeak with rpms - 8/16/2007 12:04:21 PM

sixshuta

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Joined: 7/15/2007
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if your taking a pole
i would vote the fan
it only turns on when its hot
the water pump turns all the time
you only chirp when its hot

fan 1 pump 0

good luck
big john

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Post #: 11

RE: squeak with rpms - 8/16/2007 1:47:41 PM

agent305

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Joined: 9/13/2006
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ok i put a video on youtube, if someone can watch it and tell me what you think it might be. i just stuffed my phone under the front end cuz thats where you can hear it the most!
any and all suggestions are appriciated. here is the link....
http://www.youtube.com/watch?v=EPlpuofGCBo

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Post #: 12

RE: squeak with rpms - 8/16/2007 4:09:02 PM

lennyblazer

Posts: 1988
Joined: 5/6/2007
From: Appleton, WI / Houghton, MI
Status: offline

Sounds like a fan clutch but not sure. I would wait and see what others say after seeing the video.

_____________________________

-Lenny
4.3L Auto. 3.73Gears

http://www.cardomain.com/ride/2358267

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Post #: 13

RE: squeak with rpms - 8/16/2007 4:18:00 PM

agent305

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Joined: 9/13/2006
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yea thats what i thought. what made me think it more, is i ran the truck WITHOUT the fan, and it didnt do it.

so i put a new fan clutch in it, and the squeak is still there. its not as bad but definitely still there.

is there anyway it couls be the water pump pulley?

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Post #: 14

RE: squeak with rpms - 8/16/2007 5:21:56 PM

lennyblazer

Posts: 1988
Joined: 5/6/2007
From: Appleton, WI / Houghton, MI
Status: offline

Well then I guess it sounds like a waterpump/pulley failure. Is your engine running hotter than normal? If so I would replace the water pump. Did you try greasing the pulley on the waterpump with WD40 or something like that? If you did and it is still making that noise, make sure you pinpoint the sound to the waterpump then I would replace the waterpump. Shouldn't be too expensive to replace, just go to your local parts store and ask for a good quality one.

_____________________________

-Lenny
4.3L Auto. 3.73Gears

http://www.cardomain.com/ride/2358267

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Post #: 15

RE: squeak with rpms - 8/17/2007 5:19:34 AM

agent305

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Joined: 9/13/2006
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yea man....i greesed everything. this thing got me....im hearin that noise in my sleep.

wont do it with the fan off the truck, thats why i thought it was the clutch....but must only be cuz there isnt as much load on it.
do you think i should get a gatorback belt?
hey man....thanks for tryin to help!

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Post #: 16

RE: squeak with rpms - 8/17/2007 8:37:04 AM

agent305

Posts: 148
Joined: 9/13/2006
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well, i went and got a gatorback belt which didnt do anything. on my way home i thought i lost my tranny, cuz it wouldnt shift, and when i pulled in the driveway i looked under the hood to see maybe the belt came off? but everything was fine,
went to back up and it wouldnt go.
lookin underneath, after i jacked it up...cuz im one of the ones that lowers blazers.. the front ujoint looks like it sprayed grease all over everything.

awesome. i have no idea why i keep buyin blazers.
guess its kinda like an unconditional love thing huh?

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Post #: 17

RE: squeak with rpms - 8/21/2007 4:53:37 PM

agent305

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Joined: 9/13/2006
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youre not gonna believe this. my tranny went, and i just got it back from the shop, and that squeak is still there.

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Post #: 18

RE: squeak with rpms - 8/22/2007 4:31:10 PM

agent305

Posts: 148
Joined: 9/13/2006
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ok i need serious help. so far i replaced

belt twice, 3rd time got a gator back
tensioner assembly
fan clutch
had the tranny rebuilt
and today i did the water pump
and that damn noise is still there.

its definitly something turning and it does it worse in reverse.
also does it pretty bad in 2nd around 1500 rpm.
please help me

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Post #: 19

[Deleted] - 8/22/2007 6:50:42 PM

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