Throw out bearing?, only when cold |
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Throw out bearing?, only when cold |
ericoneal |
Jul 17 2017, 06:57 AM
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#1
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Member Group: Members Posts: 320 Joined: 13-August 12 From: Crestwood, KY Member No.: 14,795 Region Association: South East States |
Whenever I start my car when its cold and press the clutch, its making an awful rattling sound, even at idle. The noise increases as a push on the clutch pedal and from my research on here and YouTube, it sounds like the throw-out bearing on the transmission.
The odd part of all of this is that it only happens when the engine is cold. Once I let her warm up for a few minutes, the noise is gone by the time I'm leaving the house (Reverse, then Forward, then no more sound) Everything seems to be shifting fine and the noise disappears. Something is going on down there, do you guys think its safe, mechanically, to drive it like this for awhile or will a worn throw-out cause more damage? Seems like an easy fix as soon as I can get time to drop the tranmission. |
Mark Henry |
Jul 31 2017, 05:52 AM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
(IMG:style_emoticons/default/agree.gif)
That's not the sound of any release bearing I've heard failing. Usually would sound a lot like a wheel bearing failing, real bad you would feel the grind right through the pedal. First thing is to get a buddy to press on the clutch, crawl under and isolate where the noise is coming from. Do you feel that right through the pedal? My first guess is you have a busted pressure plate spring. Or the spring rivets have let go or it has broken spring fingers. The PP has a diaphragm spring I bet it has cracked all the way around and part of it is letting go or it has totally failed and the shoe is spinning and hitting whatever is left of the rivets. This may be hard to spot as it's sandwiched between the PP cover and shoe. Although different spring type I had a type 1 PP arm (KEP stage 1) let go and it sounded similar. If I'm right only cure is a new or good used Pressure Plate. |
ericoneal |
Jul 31 2017, 06:34 AM
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#3
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Member Group: Members Posts: 320 Joined: 13-August 12 From: Crestwood, KY Member No.: 14,795 Region Association: South East States |
I took the car out yesterday for a quick drive around the block a couple of times, and it shifted and ran great. Also, the noise was gone by the time it had warmed up for 2-3 minutes before my drive and was not there while I was driving at all.
Its all very odd. If it were the clutch, there would be issue while driving, right? I'm thinking, maybe just wishful, that its something else at this point. Will get it under tonight or tomorrow and search closer using zipedadoo's approach. Perry, I did not touch the clutch while I was under there, just replaced the TOB and put it back together. Thanks all, Eric (IMG:style_emoticons/default/agree.gif) That's not the sound of any release bearing I've heard failing. Usually would sound a lot like a wheel bearing failing, real bad you would feel the grind right through the pedal. First thing is to get a buddy to press on the clutch, crawl under and isolate where the noise is coming from. Do you feel that right through the pedal? My first guess is you have a busted pressure plate spring. Or the spring rivets have let go or it has broken spring fingers. The PP has a diaphragm spring I bet it has cracked all the way around and part of it is letting go or it has totally failed and the shoe is spinning and hitting whatever is left of the rivets. This may be hard to spot as it's sandwiched between the PP cover and shoe. Although different spring type I had a type 1 PP arm (KEP stage 1) let go and it sounded similar. If I'm right only cure is a new or good used Pressure Plate. |
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