tranny problem?

[JJCNSX]

hey guys,

Hopefully some of you can help to trouble shoot for me.

After i install my 6 spds tranny, from tiem to time, my clutch was slipping. this afternoon, it was so bad that I can not even go uphill at all.. and I can not gas too hard, because if I do, the clutch would only slip

After, the tech fixed it, he told me that he adjusted the “master cylinder” .. I am not sure if that is what he means. I thought master cylinders are for the brake.. oh well..
Basically, that is the thing to adjust clutch engagement point ..

Tonite, I downshift to 3rd gear on the freeway, all of a sudden the clutch pedal got stuck all the way down to the floor… I had to drive in 3rd gear until I pull off from the freeway.

While I am driving it, I can hear the metal clicking (or banging something) sound.. as if I was dragging a metal pipe under my car.

So I parked my car, and I noticed (1) my pedal is all the way down to the floor. When I lift it up, it will stay all the way up, and when I press it again, it will drop all the way down to the floor (without any resistance)
(2). I don’t see any metal (or metal pipe) hanging under my car.. not sure where that noise is coming from (3), I see about ½ qtr of clutch fluid (brake fluid) dripping underneath the car (from the tranny)

what do you guys think the problem might be? I understand this is hard to diagnose the problem this way.. sorry,, any idea will help

thanks

-jjc.

 

[MarkB]

I may be all wet; but, it sounds like the tech left something loose which allowed the hydraulic fluid to leak out. This would account for no clutch (bottom out) and for the dripping fluid. As fo the clanging nouise, can't help you there.

 

[JJCNSX]

turrned out to be a blown slave cylinder gasket.. i was also told that NSX slave and master cylinders tend to leak or fail at about 10 years.

so, i guess aftermarket clutch (comptech PG) probably helped to kill the seal/gasket.

i have more problem with my STOCK NSX in 4 months and 2k miles than my MODDED Supra TT in 7 years and 70k miles. Come to think of it, my NSX has already sat in the shop garage more days than my Supra ever did.. ARRRGG.. This is frustrating!!

-jjc.

 

[nsxtasy]

i guess aftermarket clutch (comptech PG) probably helped to kill the seal/gasket.

i have more problem with my STOCK NSX in 4 months

I think I detect an inconsistency between these two statements...

 

[Cris]

Having had both an NSX and a BPU +++ Supra TT, I would still say that I would give up the supra any day for the NSX. The power on the supra is nice, but its not enough to make up for the driving experience of the NSX...

 

[JJCNSX]

fine .. stock NSX with almost stock Comptech GP clutch..

I thought Comptech should consider "stock"


Supra vs NSX has been debated to death. I am loyal Supra tt defender right now. Let's not start it again

but, i love both, and glad to have both.

-jjc.

 

[NSXDreamer2]

JJCNSX, I'm new in Nsx ownership, for me, I would say whoever maintain / fixing your car play a big part for that too. (Maybe you are just not lucky that you got an used car with problems and you didn't find it out.)

I guessed you could ask around and see where mose WA nsxer's bringing their cars to (shop.) next time.

Anyway, when is the Seattle meet, is it every first Saturday at Factoria mall??
Do you guys meet in the morning??

 

[JJCNSX]

JJCNSX, I'm new in Nsx ownership, for me, I would say whoever maintain / fixing your car play a big part for that too. (Maybe you are just not lucky that you got an used car with problems and you didn't find it out.)

I guessed you could ask around and see where mose WA nsxer's bringing their cars to (shop.) next time.

Anyway, when is the Seattle meet, is it every first Saturday at Factoria mall??
Do you guys meet in the morning??

i will tell you more in detail in person. I really suspect it is the shop.. however, of course the shop told me it is the clutch pressure plate that blew the gasket. Come to think of it, it might be true, with old gasket and added CT GP extra pressure, it probably finished the gasket. I guess i am just having really bad luck with this shop.

anyhow, i found a shop that is a lot cheaper and someone that i can trust and courteous.

I dont know seattle meet, never been to one, never aware of one. let me know if you find out more. [email protected]

 

[peiserg]

just FYI, there are two master cylinders, one brake, one clutch... and the master controls the slave cylinder, which SHOULD reside somewhere near the clutch itself.. basically, when you push in the clutch, you depress the MASTER, which plunges fluid to the slave, which moves the clutch.

 

[NSXTech]

spurcr

just FYI, there are two master cylinders, one brake, one clutch... and the master controls the slave cylinder, which SHOULD reside somewhere near the clutch itself.. basically, when you push in the clutch, you depress the MASTER, which plunges fluid to the slave, which moves the clutch.

More than likely it was the tech's fault. When you replace a clutch on an NSX, you have to be carefull not to let the slave piston travel beyond the seal area. If it does, it needs to be pushed back in, but becuse it sucked air, the bleeder must be opened-
But Wait- then the clutch pedal is all wrong because the pedal (system) needs bled. Adjusting the master cylinder is the fools way to fix a slave problem. The leak is probabally a result of nicking the seal when forcing it back in. The slipping a result of adjusting the master cylinder before properly bleeding, then as it bleeds itself with use, the pedal gets harder and higher.

Sounds like a botched install to me, but what do I know.
MB

 

[JJCNSX]

tranny problem II

hey guys,

i finally got my car back today..

now i have MORE problem.. i am very sick of it

Symptoms

(1) from time to time (on and off by itself) i can hear this "grinding" noise from the clutch pedal, behind the clutch pedal, under the car, and perhaps from the tranny itself.. but mostly from where the pedal is.. This "grinding" noise sound like food dispenser in your kitchen sink.. expect not as intense.

(2) when i lightly tap on the clutch pedal, i can feel the vibration as if something is grinding.. but if i fully press it, this vibration will go away.

(3) When the "grinding" noise occur, and if i step on the clutch, right before i fully press it, i can feel the vibration a lot more severe than normal, and the "grinding" sound louder.. this vibration is very intese as if it is about to throw my foot back out.

what is the problem now? or is it typical Comptech clutch? Please help me, i am sick of this.. thx

-jjc

 

[BITeR]

Re: tranny problem II

hey guys,

i finally got my car back today..

now i have MORE problem.. i am very sick of it

Symptoms

(1) from time to time (on and off by itself) i can hear this "grinding" noise from the clutch pedal, behind the clutch pedal, under the car, and perhaps from the tranny itself.. but mostly from where the pedal is.. This "grinding" noise sound like food dispenser in your kitchen sink.. expect not as intense.

(2) when i lightly tap on the clutch pedal, i can feel the vibration as if something is grinding.. but if i fully press it, this vibration will go away.

(3) When the "grinding" noise occur, and if i step on the clutch, right before i fully press it, i can feel the vibration a lot more severe than normal, and the "grinding" sound louder.. this vibration is very intese as if it is about to throw my foot back out.

what is the problem now? or is it typical Comptech clutch? Please help me, i am sick of this.. thx

-jjc

These symptoms are similar to what I experienced on my car. My symptoms occured suddenly and on the stock clutch.
Mine was so bad I could not really get the car in gear. But it sounds the same as you describe. Maybe something is stuck or broken in your clutch?
My car is in the shop now to have the clutch changed. IF it turns out to be something else but the clutch I will sure let you all know.

 

[JJCNSX]

UPDATE!

Good news: my pressure plate is intact.. no broken arm, just light scratches from fork of throw out bearing (which is why it sounded like "dragging a metal pipe under my car"

Bad news: the problem is either (1) bended fork of throw out bearing (2) throw out bearing itself .. They suspect when the slave cylinder blew up, the fork probably get caught up in the pressure plate arms to cause scratches, and to bend the “fork”. Their theory is that since the “grinding” noise is on and off.. and once clutch is depressed, the problem will go away; hence, the clutch assembly itself is ok, but the fork might be bended and/or the throw out bearing might be out of alignment, to cause the “grinding”.. and when the clutch is depressed, it might temparory align the throwout bearing.. and it will be normal again

If broken throwout bearing, or fork, or broken pressure plate arm, then the noise should be ON all the time..

Real bad news..: the damn shop told me that they willll have to drop the tranny to get to the throw out bearings .. and throwout bearing fork, and CHARGE ME 550+ buck.. can you believe it???

What do you guys think?

How much is the comptech GP "throw out bearings" and how much is the OEM fork?

-jjc.