Clicking Clutch

Joined
27 March 2002
Messages
344
Location
Los Angeles CA USA
Just started having a stange click in the clutch pedal on a 97NSX-T. Here's the symptons.
-small click after depressing clutch about 2 inches
-Only happens on depression not on release
-Happens if engine is running or not
-Happens if in gear or in neutral

Any ideas?
 
Are you certain the sound is coming from the transmission area (behind and below you) or is it coming from the pedal assembly?

Either way, try working the pedal slowly by hand to get a better feel of what's happening. There should be some free-play at first where the only resistance is a return spring. Then as the throw-out bearing makes contact with the pressure plate it will suddenly get more difficult to press. When does the click happen? You said ~2 inches, so probably after you start pressing the plate. Can you feel the click through the pedal?
 
Originally posted by sjs:
Are you certain the sound is coming from the transmission area (behind and below you) or is it coming from the pedal assembly?
The click has always been coming from the pedal assembly or right in front of it, not the tranny

Either way, try working the pedal slowly by hand to get a better feel of what's happening. There should be some free-play at first where the only resistance is a return spring. Then as the throw-out bearing makes contact with the pressure plate it will suddenly get more difficult to press. When does the click happen? You said ~2 inches, so probably after you start pressing the plate. Can you feel the click through the pedal?
The click has always been coming from the pedal assembly or right in front of it, not the tranny.
The click happens at the end of the free-play as the tension on the pedal gets higher. I can feel the click in my foot.
I can't tell if it is metal against metal or plastic.
Sound like the throw out bearing?
Thanks in advance or your time.



[This message has been edited by NSX-Ster (edited 31 August 2002).]
 
Ah, so it's at the pedal assembly, that's good news because it eliminates the throw-out bearing, clutch assembly etc.

There are a number of possibilities at the pedal assembly. One of course would be the shaft on which it pivots. I don’t know how/if it is bushed but I’m not betting on that anyway. There are two different switches activated by the clutch. I think the lower one is released as you press down the clutch so it is probably not the click that you can feel. The upper one is normally open and gets closed as you press the clutch. (This is the one that must be pressed to start the car) If that switch binds or is misaligned (perhaps the bracket is bent) it could bind and cause you click. I’m not betting on this either.

More likely I think is the pivot of the clutch master cylinder shaft where it connects to the pedal, or the assist spring that helps return the pedal up. The master shaft and both ends of the spring have lube points that could be dry. If you don’t mind crawling around under there you may be able to find it by pressing the clutch by hand and looking with a light and maybe a mirror for some angles.

If it’s none of those then it could be the shaft where it goes into the master, or even something like a loose master, but I’m guessing it’s the spring or shaft pivot, either dry or somehow bent.
 
Originally posted by sjs:
Ah, so it's at the pedal assembly, that's good news because it eliminates the throw-out bearing, clutch assembly etc.

There are a number of possibilities at the pedal assembly. One of course would be the shaft on which it pivots. I don’t know how/if it is bushed but I’m not betting on that anyway. There are two different switches activated by the clutch. I think the lower one is released as you press down the clutch so it is probably not the click that you can feel. The upper one is normally open and gets closed as you press the clutch. (This is the one that must be pressed to start the car) If that switch binds or is misaligned (perhaps the bracket is bent) it could bind and cause you click. I’m not betting on this either.

More likely I think is the pivot of the clutch master cylinder shaft where it connects to the pedal, or the assist spring that helps return the pedal up. The master shaft and both ends of the spring have lube points that could be dry. If you don’t mind crawling around under there you may be able to find it by pressing the clutch by hand and looking with a light and maybe a mirror for some angles.

If it’s none of those then it could be the shaft where it goes into the master, or even something like a loose master, but I’m guessing it’s the spring or shaft pivot, either dry or somehow bent.
SJS- first off, thanks for the fast and thorough replies. Checking the pedal assembly and lube points was my next step. I've printed the appplicable pages from the service manual and will be crawling around the pedals ASAP. I'l let you know the results.
nsx-ster
 
Here's my results-
-Printed the pages from the service manual that showed the lube points on the pedal assembly
-Aquired factory Honda grease from my friend/dealer
-Lubed all points in about 15mins.
-Problem went away after a few depressions of the clutch!
-The whole pedal assembly feels better and a little more responsive under my foot
-I would suggest this as part of routine maitenance

SJS-thanks again for your time and input!!!!
 
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