 Some engine sound diagnosis requested., She chirps! |
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 Sep 22, 2011 - 10:27 AM
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Enthusiast  Joined Jun 18, '09 From Orlando Currently Offline Reputation: 8 (100%)  |
Issue 1, let us imagine that I give the engine the full beans in neutral and let off. As the revs fall past 2k, there's a ratcheting noise from the engine bay that lasts about half a second. Issue 2, she chirps. Under certain load, usually 2.5-3.5k in 3rd (auto, mind you) I can hear a chirping, it sounds like something just seriously wobbling. I'm thinking both of these are pulley or belt related. Timing belt hasn't been changed to my knowledge, car is at 95k and change. Dissection, criticism and help greatly appreciated. Thanks guys.
This post has been edited by SwissFerdi: Sep 22, 2011 - 10:28 AM -------------------- '97 ST \ Eibach \ KYB \ Kenwood \ Alpine \ Cusco \ OEM+ [sold 10/18]
'90 MX-5 Mariner Blue '93 MX-5 LE '07 Kawasaki Eliminator 125 silver '15 Optima Grey '04 206 GTi silve |
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Sep 26, 2011 - 10:28 AM
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Enthusiast Joined Jun 18, '09 From Orlando Currently Offline Reputation: 8 (100%) |
No one has additional thoughts?
-------------------- '97 ST \ Eibach \ KYB \ Kenwood \ Alpine \ Cusco \ OEM+ [sold 10/18]
'90 MX-5 Mariner Blue '93 MX-5 LE '07 Kawasaki Eliminator 125 silver '15 Optima Grey '04 206 GTi silve |
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Sep 26, 2011 - 10:47 AM
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Enthusiast Joined Dec 8, '03 From Lancaster CA Currently Offline Reputation: 6 (100%) |
dude its too hard to diagnose with out being in front of the car
-------------------- 2001 Celica GT-S Turbo
1997 Supra TT 6speed 1997 Celica 3MZ/1MZ swap 1990 Celica All-Trac |
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Sep 26, 2011 - 11:45 AM
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Enthusiast Joined Jun 18, '09 From Orlando Currently Offline Reputation: 8 (100%) |
Fair enough. I was hoping somebody would chime in recognizing it as a common noise. Well, I'll be doing brake work within the next few weeks, so I'll check things over with my buddy. Bearings, belts, pulleys, might as well take the timing cover off and see what the story is there.
Does it help if I say that the chirp occurs only with load on the car, such as holding the car at a stop when idling in drive, or accelerating in light loads like I mentioned? This post has been edited by SwissFerdi: Sep 26, 2011 - 11:50 AM -------------------- '97 ST \ Eibach \ KYB \ Kenwood \ Alpine \ Cusco \ OEM+ [sold 10/18]
'90 MX-5 Mariner Blue '93 MX-5 LE '07 Kawasaki Eliminator 125 silver '15 Optima Grey '04 206 GTi silve |
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Sep 26, 2011 - 11:50 AM
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Enthusiast Joined May 29, '09 From Gainesville, FL Currently Offline Reputation: 17 (100%) |
My idler for altenator was making a chirping when it was faulty...
Spray each pulley with lub and see if the noise changes, or use a pipe to ear until the squeeling gets louder. That should point your right to it. |
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Sep 26, 2011 - 8:55 PM
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Enthusiast Joined May 16, '10 From Raleigh Currently Offline Reputation: 12 (100%) |
exhaust rubbing or bad bearing in one of your accessories possibly a worn out belt rubbing something the wrong way.
or maybe an old rusty heat sheild --------------------  |
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Sep 27, 2011 - 12:00 PM
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Enthusiast Joined Jan 20, '08 From East Coast Currently Offline Reputation: 1 (100%) |
I've had a similar sound in the past (the chirping and rattling for me) but it turned out to be an exhaust leak.
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Sep 28, 2011 - 3:32 AM
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 Enthusiast Joined Jan 30, '11 From Albany, NY Currently Offline Reputation: 4 (100%) |
I've got the same issue, I believe it is a belt and as far as I know the timing belt hasent been changed either so I want to replace them all, know where we could get those?
--------------------  Power in Balance 90 ST coupe- Sold 95 ST hatch- Dead :’( 02 Impreza RS- DD |
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Sep 28, 2011 - 11:24 AM
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Enthusiast Joined Jun 18, '09 From Orlando Currently Offline Reputation: 8 (100%) |
OEM.
This post has been edited by SwissFerdi: Sep 28, 2011 - 11:24 AM -------------------- '97 ST \ Eibach \ KYB \ Kenwood \ Alpine \ Cusco \ OEM+ [sold 10/18]
'90 MX-5 Mariner Blue '93 MX-5 LE '07 Kawasaki Eliminator 125 silver '15 Optima Grey '04 206 GTi silve |
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