Rattling Upon Launch [MN6]
Thread Starter
Melting Slicks
Joined: Dec 2004
Posts: 3,219
Likes: 1
From: Somerset Co, NJ
Rattling Upon Launch [MN6]
I have an '00 FRC, and I've recently heard a slight rattle when I let the clutch out in 1st gear, and in second.
I was reading the C5 "issues" sticky, and it kind of sounds like the throwout bearing, but it also goes away after I increase the rpm's, this also happens in second.
It almost sounds like something loose, b/c the lower rpms cause a vibration, and as the rpms go up, it goes away...I don't know, does it sound like the throwout bearing, if so I'll ignore it, I 've read its normal.
Thanks for any input to this question!
I was reading the C5 "issues" sticky, and it kind of sounds like the throwout bearing, but it also goes away after I increase the rpm's, this also happens in second.
It almost sounds like something loose, b/c the lower rpms cause a vibration, and as the rpms go up, it goes away...I don't know, does it sound like the throwout bearing, if so I'll ignore it, I 've read its normal.
Thanks for any input to this question!
Drifting
Joined: Oct 2003
Posts: 1,540
Likes: 0
From: bloomfield nj
a throw-out bearing will not give you a vibration in the driveline,if anything you would feel it in the pedal.if the throw-out bearing is noisey,you would here it at idle with the clutch engaged[foot off pedal].
without feeling the vibration it is hard to tell you what could be wrong,but i would check the torque on the rear axle shafts.they tend to loosen up and create a clicking noise.the fix is to remove the nuts,lube the splines and retorque.other causes could be loose rattle springs in the disc[wouldn't really cause a vibration though],a pressure plate going bad[that would cause a vibration],driveshaft,etc.
without feeling the vibration it is hard to tell you what could be wrong,but i would check the torque on the rear axle shafts.they tend to loosen up and create a clicking noise.the fix is to remove the nuts,lube the splines and retorque.other causes could be loose rattle springs in the disc[wouldn't really cause a vibration though],a pressure plate going bad[that would cause a vibration],driveshaft,etc.
Thread Starter
Melting Slicks
Joined: Dec 2004
Posts: 3,219
Likes: 1
From: Somerset Co, NJ
Sorry guys, I didn't specify... I meant a noise (rattle) as a result of a vibrating part somewhere because of the lower rpms...I didn't mean a vibration as if you can feel something, no feeling, just sound.
The car is as quiet as anything, even with the clutch engaged, and in neutral. Its just when I go from a stoplight, driving normallyt, when I let the clutch out, I hear a rattle, and as I give it more throttle, as the rpm's go up, it goes away, I've also heard it when I shift into second. To me, it almost sounds as if something's loose toward the rear of the car. The lower rpms of the engine might make something "vibrate" (not felt) causing a rattling sound, then as the engine increases rpm, it stops. I was just wondering if it was the throwout bearing, or there is a loose bracket or something.
The car is as quiet as anything, even with the clutch engaged, and in neutral. Its just when I go from a stoplight, driving normallyt, when I let the clutch out, I hear a rattle, and as I give it more throttle, as the rpm's go up, it goes away, I've also heard it when I shift into second. To me, it almost sounds as if something's loose toward the rear of the car. The lower rpms of the engine might make something "vibrate" (not felt) causing a rattling sound, then as the engine increases rpm, it stops. I was just wondering if it was the throwout bearing, or there is a loose bracket or something.
Last edited by C5Jimmy; Dec 27, 2005 at 05:12 PM.
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Race Director
Joined: Jul 2005
Posts: 11,308
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From: The Beautiful Greater Bay Area California
Originally Posted by bobc997615
My 1999 Chevrolet Corvette owners video shows a MN6 (with audio of the rattle) saying that the "rattle" leaving from a stop is normal. 
Safety Car
Joined: Nov 2004
Posts: 4,487
Likes: 71
From: So Cal
Originally Posted by bobc997615
My 1999 Chevrolet Corvette owners video shows a MN6 (with audio of the rattle) saying that the "rattle" leaving from a stop is normal.
