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02-01-2019
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#1 |
Join Date: Jul 2005
Location: Star, Idaho
Posts: 56
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A funny squeaky sound
Not a squirrel I hope. I have a squeaky sound from under the hood that starts shortly after start up and starts off with long intervals (several seconds) between squeaks then progressively the squeak intervals become shorter the longer the engine is ran until it's a constant chirp. Any suggestions on where this may be coming from? I replaced the belt less than a 1000 miles ago.
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'90 ZR-1 Red/Red #1239 SGC P/P Plenum/IH, Headers, B & B, Hurst, K & N "Red RocketShip!" |
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02-01-2019
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#2 |
 
Join Date: Nov 2007
Location: Sunshine State
Posts: 1,071
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Re: A funny squeaky sound
Id guess one of these:
Idler pulley Alternator bearing
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[B]1990 #2815[/B] [COLOR="Red"][B]Red/Red[/B][/COLOR] Ported Plenum & IH (by Pete) Haibeck Chip Rebuilt FPR (by Phil) FIC Injectors Watson LT Headers 3" Stainless Works exhaust Lingenfelter Open Air Lid Bill B Built Transmission Shifter & C Beam Plates [FONT=Impact][COLOR=red]1992 [COLOR=black]#[/COLOR] 091[/COLOR][/FONT] [FONT=Impact][COLOR=#ff0000]Red/[COLOR=silver]Gray[/COLOR][/COLOR][/FONT] [B]SOLD[/B] |
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02-01-2019
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#3 |
 
Join Date: Sep 2008
Location: Mullica Hill, New Jersey
Posts: 2,574
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Re: A funny squeaky sound
Was the noise what prompted the belt to be replaced, or did it occur afterwards?
What belt did you use? Marty |
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02-02-2019
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#4 |
 
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,679
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Re: A funny squeaky sound
Had same issue belt less then 1000 miles changed tensioner,idler still had the squeak.
It was dry belt low miles but 4 years old. If you want to find out if it's the belt spray lil Armor All or equivalent on the belt if squeak goes away it's belt issue. Make sure it's not one of your accessories. Pete
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'91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage |
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02-02-2019
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#5 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,698
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Re: A funny squeaky sound
I’ve had a similar issue. Squeak begins at start up altho it increases fairly quickly. It persists and then starts to fade as I get to operating temps, then disappears. I’ve swapped tensioners and pulleys more than once. Alternator is a rebuilt Delco unit w about 5-8k miles on it. If I push on pulley, noise disappears.
The one thing I have not swapped yet is the belt altho it is fairly new.
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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02-02-2019
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#6 | |
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Join Date: Nov 2007
Location: Sunshine State
Posts: 1,071
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Re: A funny squeaky sound
Quote:
Sounds like when its cold, the grease is tight/thick and when it warms up its flowing easier and the nose goes away.
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[B]1990 #2815[/B] [COLOR="Red"][B]Red/Red[/B][/COLOR] Ported Plenum & IH (by Pete) Haibeck Chip Rebuilt FPR (by Phil) FIC Injectors Watson LT Headers 3" Stainless Works exhaust Lingenfelter Open Air Lid Bill B Built Transmission Shifter & C Beam Plates [FONT=Impact][COLOR=red]1992 [COLOR=black]#[/COLOR] 091[/COLOR][/FONT] [FONT=Impact][COLOR=#ff0000]Red/[COLOR=silver]Gray[/COLOR][/COLOR][/FONT] [B]SOLD[/B] |
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02-02-2019
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#7 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,698
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Re: A funny squeaky sound
The period of the noise appears to coincide w one rpm of the belt. And I have swapped i a new pulley w 2 diff tensioners.
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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Linear Mode
