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Clutch pedal engine vibration when completely depressed

Old Aug 19, 2008 | 07:03 AM
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Clutch pedal engine vibration when completely depressed

I just had my slave cylinder replaced.

Now, when I have my foot on the clutch pedal fully depressed and I rev the engine I can feel the engine through the pedal and it sounds slightly different than when I'm not touching the pedal.

I read this thread and it matches matty's description.

http://forums.maxima.org/4th-generat...tch-pedal.html

Should I be concerned? There are no symptoms other than this. It engages, as it always has, almost right off the floor and cleanly. The pressure is the same, consistent throughout the travel. There are no signs of slippage or anything.

It's just strange when I shift gear over 4k and rev the engine with it depressed feeling the motor through the pedal. It's not natural to me.
Old Aug 19, 2008 | 07:51 PM
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Bump.
Old Aug 20, 2008 | 12:22 AM
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sounds like you may have a rough throw out bearing!
Old Aug 20, 2008 | 06:01 AM
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Wow, that sucks. I just put around $1,000 into the car to fix frozen calipers (entire rear brakes), front sway bar end links and slave cylinder.

How much is it going to cost to have this fixed? Is this something that I can live with and drive the car for a while or is it going to mess up the tranny?
Old Aug 22, 2008 | 05:55 AM
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Any other ideas?
Old Aug 22, 2008 | 10:15 AM
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Originally Posted by Progress
... It engages, as it always has, almost right off the floor...
I am not so sure it should be engaging right off the floor. It sounds like it is not disengaging all the way when you depress the clutch pedal. Why... I have no idea. One simple thing to check is to make sure the mat is not stuck under the pedal.
Old Aug 22, 2008 | 10:39 AM
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Originally Posted by Whiggy
I am not so sure it should be engaging right off the floor. It sounds like it is not disengaging all the way when you depress the clutch pedal. Why... I have no idea. One simple thing to check is to make sure the mat is not stuck under the pedal.
I thought of that. The mat is no where near the pedal. It is going all the way into the floor.

In first, I can rev the motor and pull the pedal out an inch or so and the tach will stay where it is and the engine will not lug. If it weren't disengaging, wouldn't the engine be affected with the pedal on the floor and it in gear?

Thanks for the response.
Old Aug 22, 2008 | 10:51 AM
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I may be completely wrong here but these are just my thoughts - one inch of pedal movement translates to very little movement of the clutch plate that may not be enough to stall a 200+ hp engine or move a 3000+ lbs. car. (Not the stock clutch at least). The clutch may be engaged just enough for you to feel the vibrations. Is there a way to adjust the clutch pedal to grab a little higher?
Old Aug 22, 2008 | 11:25 AM
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Adjust it @ the top of your clutch peddle. The rod that connects to the clutch M/C should have a jam nut and a clevis style rod end! Back in the day( late 60's-mid 70's) even the slave cylinders had adjusts on certain japanese manuals trans.
Old Aug 22, 2008 | 11:29 AM
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Originally Posted by Whiggy
I may be completely wrong here but these are just my thoughts - one inch of pedal movement translates to very little movement of the clutch plate that may not be enough to stall a 200+ hp engine or move a 3000+ lbs. car. (Not the stock clutch at least). The clutch may be engaged just enough for you to feel the vibrations. Is there a way to adjust the clutch pedal to grab a little higher?
Good point. So you think there's friction there even when the pedal is full depressed?

I know the shop that did the work (replaced the slace cylinder), said they did as much as they could to adjust the clutch to engage higher.

Should I be expected to set out at the same task and succeed?

Who's got a link to the FSM? I don't have one on this comp.
Old Aug 22, 2008 | 11:30 AM
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Originally Posted by CMax03
Adjust it @ the top of your clutch peddle. The rod that connects to the clutch M/C should have a jam nut and a clevis style rod end! Back in the day( late 60's-mid 70's) even the slave cylinders had adjusts on certain japanese manuals trans.
How do I even access this stuff?
Old Aug 22, 2008 | 11:33 AM
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Originally Posted by Progress
How do I even access this stuff?
lay on your back or side on the driver's side floor and with a bright flashlight you should see the linkage connected the clutch peddle!
Old Aug 22, 2008 | 11:35 AM
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Originally Posted by CMax03
lay on your back or side on the driver's side floor and with a bright flashlight you should see the linkage connected the clutch peddle!
Thanks. I'll definitely give this a shot soon.

FYI FSM: http://www.phatg20.net/component/opt...,select/id,28/
Old Aug 22, 2008 | 12:07 PM
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Okay, so if I follow this I will be able to adjust the clutch to possibly disengage when the pedal is down?

Can anyone verify this. I don't want to be doing this for naught.

http://i5.photobucket.com/albums/y15...g?t=1219431839
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