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04-11-2010, 11:56 AM
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#1
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Join Date: Nov 2009
Location: Phil's butthole palace, NJ
Posts: 227
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Weird chirping sound from engine
Hello everyone, So on my way back from work... my car started to chirp.. at first it was very quite almost didn't hear it.. now you can hear it, it's got a lot louder. And it goes with the RPM's. it also has a weird skipping sound.. the car still runs fine.. But the sound is from the back of the engine bay, It sounds similar to this guy's lt1 car I found on youtube http://www.youtube.com/watch?v=_Kut0ohMy8E
If anyone can help me I'd love to know what's up...
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04-11-2010, 01:21 PM
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#2
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Join Date: Jun 2007
Location: Arm pit of the world... NJ
Posts: 2,677
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Is the car an auto?
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John
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04-11-2010, 02:00 PM
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#3
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Join Date: May 2007
Location: Jim Thorpe PA
Posts: 2,134
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The vid sounds like a spun bearing to me
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04-11-2010, 03:02 PM
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#4
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11 second club / Moderator
Join Date: Aug 2004
Location: West Berlin, NJ
Posts: 7,148
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Ac compressor on? Tensioner pulley? Undo the belt and start it up for a second to see if you don't hear it. If no then it's the alt, ps, ac, or tensioner
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2001 Trans Am WS6 •SLP Loudmouth II •UMI Suspension •12.857 @ 109.57
1996 Trans Am WS6 •Pacesetter Longtubes •Strange 12 Bolt •Spohn Suspension •11.152 @ 123.85
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04-11-2010, 04:21 PM
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#5
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,476
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Yea, taking the belt off and then starting the car for a short time is your best first step.
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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04-11-2010, 05:46 PM
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#6
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9 Second Club
Join Date: Dec 2004
Location: Merchantville
Posts: 518
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If your car sound like the one in the video then I would say is sounds like a spun bearing.
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Twisted Minds Racing
2000 SS M6
9.71 @ 142
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04-11-2010, 06:39 PM
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#7
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Join Date: May 2009
Location: Highland Mills, NY
Posts: 1,915
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Quote:
Originally Posted by Tru2Chevy
Yea, taking the belt off and then starting the car for a short time is your best first step.
- Justin
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beat me to it
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2000 Camaro SS 610rwhp/570rwtq LS2 440, 12 bolt 3.73, tranzilla t56
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04-11-2010, 06:50 PM
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#8
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Join Date: Nov 2009
Location: Phil's butthole palace, NJ
Posts: 227
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Quote:
Originally Posted by Featherburner
Is the car an auto?
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Yup it's an automatic. just had the transmission done 3000 miles ago...
 I don't know if it's a pulley or belt. the sound is coming from the BACK of the engine...
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04-11-2010, 06:59 PM
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#9
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by deadtrend1
Ac compressor on? Tensioner pulley? Undo the belt and start it up for a second to see if you don't hear it. If no then it's the alt, ps, ac, or tensioner
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This is great advice. Do this first.
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04-11-2010, 09:07 PM
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#10
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Join Date: Jun 2007
Location: Arm pit of the world... NJ
Posts: 2,677
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Pull the belt and run it. If it still makes the noise, I'd check for a cracked flexplate.
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John
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04-11-2010, 09:09 PM
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#11
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Join Date: Aug 2008
Location: Sewell,NJ Washington Township
Posts: 2,416
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i'm going with a spun bearing as well.
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1995 Pontiac Firebird - V6 few mods
1988 Mustang - supercharged, heads/cam etc...
2012 Mustang - 5.0 6spd / 437rwhp 420trq
Quote:
Originally Posted by LTs1ow
Verts are gay and stalkers ride in them.
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04-11-2010, 10:24 PM
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#12
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Join Date: May 2007
Location: Jim Thorpe PA
Posts: 2,134
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Quote:
Originally Posted by deadtrend1
Ac compressor on? Tensioner pulley? Undo the belt and start it up for a second to see if you don't hear it. If no then it's the alt, ps, ac, or tensioner
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Or you could just take a mechanics stetoscope and pass it infront of each of the pulleys wuth the car running to see what one is making noise. What ever one sounds loud or squeaky when you pass it in front of it is the bad one....or if it squeaks as you pass it in front of all the belt is probably bad but to test that just spray some water on the inside while it running and it should shut up...that noise in the vid deff sounds like a spun bearing tho
Last edited by B4C; 04-11-2010 at 10:25 PM.
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04-12-2010, 07:26 AM
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#13
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,368
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maybe the starter is sticking too? doesn't sound good though, unfortunately 
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04-12-2010, 01:50 PM
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#14
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I <3 sheep
Join Date: Mar 2005
Location: Belmar
Posts: 4,907
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I'd also say take the belt off and run it. Also, what does the oil pressure gauge do when in gear?
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Quote:
Originally Posted by Tru2Chevy
Steve has a thing for sheep....
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'78 Big Wheel- 2FWFP
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04-17-2010, 09:46 AM
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#15
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Hippy Mod, Bergermeister Meisterberger, Moderator
Join Date: Aug 2004
Location: Ewing
Posts: 6,216
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Try the belt first. I've had several engines start the chirping thing when the backside of the belt gets worn too smooth. I took the AC belt off the SS for over a year because the chirping was annoying and I could never remember to pick up a new one.  If it really is the back of the engine then it will be tougher to diagnose.
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69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
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04-17-2010, 11:20 PM
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#16
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Join Date: Sep 2006
Location: north jersey
Posts: 1,680
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id hope its not this for your sake but my car made the same exact sound and it was a spun bearing
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