clutch squeak
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Registered User
Joined: Jan 2004
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From: Northridge, CALIFORNIA
clutch squeak
Hello guys,
I have this recent problem. Everytime i engage the clutch, on the release there is a squeak (almost like its missing some Wd40).. I think it might be a spring issue... does anybody else have or has heard about this problem? Also, my brakes seem to grind... these are the stock brakes and I have around 23000 miles. I was planning to call servicing.. but wanted to get your feedback first...Thanks!
2003 6MT Coupe Carribean Blue
JDM Clear Corners, Injen CAI
Pioneer AVIC-80DVD w/
Pioneer AVH-P7500 DVD 7'' display
2 JL 12'' W0's w/ Alpine MRD-M500 and MRV-F540
Random Technology High-Flow Cats
I have this recent problem. Everytime i engage the clutch, on the release there is a squeak (almost like its missing some Wd40).. I think it might be a spring issue... does anybody else have or has heard about this problem? Also, my brakes seem to grind... these are the stock brakes and I have around 23000 miles. I was planning to call servicing.. but wanted to get your feedback first...Thanks!
2003 6MT Coupe Carribean Blue
JDM Clear Corners, Injen CAI
Pioneer AVIC-80DVD w/
Pioneer AVH-P7500 DVD 7'' display
2 JL 12'' W0's w/ Alpine MRD-M500 and MRV-F540
Random Technology High-Flow Cats
Registered User
Joined: Jun 2004
Posts: 71
Likes: 0
From: PA
Re: clutch squeak
Hearing a "rattle" when clutch it out and car is in neutral is normal due to dual mass flywheel in the 6MT. Below is more "technical info" on the famous "rattle". If you are getting a sqeaking noise when clutch it out and car is in gear or not... then I am making a educated guess based on past experience that the Thow Out Bearing is going bad.
6MT has a dual-mass flywheel (high performance)... that said read information below (This applied to gear noise (rattle at idle):
The original dual-mass flywheel does one thing very well - exhibits inertia. It is more difficult to change the speed of the dual-mass flywheel, whether accelerating it or slowing it down... that means besides inhibiting engine acceleration to some degree, it also inhibits the deceleration that occurs between every power pulse. The power pulse transition is smoother, therefore no rattle.
A single-mass flywheel is the same sort of design as a solid aluminum lightweight flywheel: a rigid disk of metal, either aluminum or steel. In the OE applications, these flywheels are equipped with a sprung-hub clutch. The sprung-hub clutch "splits thte difference" between the these situations. The friction material (the disk itself) is not "hard coupled" to the hub, but has a springy nature to the assembly. It has a suspension, the springs you see around the hub. What this accomplishes is letting the power pulse couple the transmission's internal parts softly, and then de-couple softly. ("Softly" being a relative term here, it is just a few millimeters of travel, nothing that can be felt.) The net result is the difference between banging two pieces together and gently placing them together.
This clutch design has a center section that is separate from the outer friction area, with a flexible coupling mechanism that uses springs to cushion the power pulse variations. Sounds very similar to the dual-mass flywheel mechanism discussed earlier for a very good reason; the idea is exactly the same, but moves the power pulse variation absorption mechanism to the clutch disk itself.
The issue with gear rattle is that conventional lightweight flywheels retain the car's original solid-hub clutch disk. First, the lightened flywheel has less mass to damp the power pulse variations. Second, there is no mechanism within the solid-hub clutch disk to absorb the power pulse variations. The result is that a conventional lightweight flywheel with solid-hub clutch may create a noticeable amount of rattle. There is simply no cushioning action at all. Note that this gear rattle only occurs at idle, in neutral, with the clutch let out. It is not heard at any other time. Above idle (even just a couple hundred rpm) and the increased frequency of power pulses outpaces the speed at which the components couple/de-couple, therefore no rattle whatsoever.
6MT has a dual-mass flywheel (high performance)... that said read information below (This applied to gear noise (rattle at idle):
The original dual-mass flywheel does one thing very well - exhibits inertia. It is more difficult to change the speed of the dual-mass flywheel, whether accelerating it or slowing it down... that means besides inhibiting engine acceleration to some degree, it also inhibits the deceleration that occurs between every power pulse. The power pulse transition is smoother, therefore no rattle.
A single-mass flywheel is the same sort of design as a solid aluminum lightweight flywheel: a rigid disk of metal, either aluminum or steel. In the OE applications, these flywheels are equipped with a sprung-hub clutch. The sprung-hub clutch "splits thte difference" between the these situations. The friction material (the disk itself) is not "hard coupled" to the hub, but has a springy nature to the assembly. It has a suspension, the springs you see around the hub. What this accomplishes is letting the power pulse couple the transmission's internal parts softly, and then de-couple softly. ("Softly" being a relative term here, it is just a few millimeters of travel, nothing that can be felt.) The net result is the difference between banging two pieces together and gently placing them together.
This clutch design has a center section that is separate from the outer friction area, with a flexible coupling mechanism that uses springs to cushion the power pulse variations. Sounds very similar to the dual-mass flywheel mechanism discussed earlier for a very good reason; the idea is exactly the same, but moves the power pulse variation absorption mechanism to the clutch disk itself.
The issue with gear rattle is that conventional lightweight flywheels retain the car's original solid-hub clutch disk. First, the lightened flywheel has less mass to damp the power pulse variations. Second, there is no mechanism within the solid-hub clutch disk to absorb the power pulse variations. The result is that a conventional lightweight flywheel with solid-hub clutch may create a noticeable amount of rattle. There is simply no cushioning action at all. Note that this gear rattle only occurs at idle, in neutral, with the clutch let out. It is not heard at any other time. Above idle (even just a couple hundred rpm) and the increased frequency of power pulses outpaces the speed at which the components couple/de-couple, therefore no rattle whatsoever.
Thread Starter
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Registered User
Joined: Jan 2004
Posts: 63
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From: Northridge, CALIFORNIA
Re: clutch squeak
Hi, thanks for your quick feedback. I think I was mislead you. I know what you are referring to. This occurs when the car is on and when you ungage th elutch in the rattle goes away... But my problem occurs when the car is on/off. Basically as I engage the clutch in/out there isa squeaky noice. Almost like something is loose, like a spring perhaps. Sounds like a bedroom door that needs Wd40... if that makes sense : P
If it is the bearing, is it covered under warranty?
Thank you!
2003 6MT Coupe Carribean Blue
JDM Clear Corners, Injen CAI
Pioneer AVIC-80DVD w/
Pioneer AVH-P7500 DVD 7'' display
2 JL 12'' W0's w/ Alpine MRD-M500 and MRV-F540
Random Technology High-Flow Cats
If it is the bearing, is it covered under warranty?
Thank you!
2003 6MT Coupe Carribean Blue
JDM Clear Corners, Injen CAI
Pioneer AVIC-80DVD w/
Pioneer AVH-P7500 DVD 7'' display
2 JL 12'' W0's w/ Alpine MRD-M500 and MRV-F540
Random Technology High-Flow Cats
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