ggraverice, sounds like your problem was from the clutch pedal assembly itself. Good that it worked out for you.

For others, its coming from outside rather than inside. And after spending more time than I would normally like to, I think I have it figured out.

The problem is the slave cylinder. If you use a stethoscope or a screw driver, you can pin point the squeak originating from the slave cylinder rather than fork/bearing. Greasing/lubricating fork spring decreases or quiets down the squeak for a while only as lubricated spring puts less stress on the slave cylinder. However, as lubrication burns off the noise comes back. I think no one was able to permanently solve this problem with just lubricating. Moreover, the squeak is louder or only present once the car warms up - signifying a heat related hydraulics problem.

I had my throw-out bearing and fork replaced twice under warranty after having the transmission replaced. As far as I know, the fork spring doesn't come lubricated from factory. I guess that's not how its designed. I know some people were able to fix the problem by replacing slave cylinder. To sum it up, I am quite sure that its faulty slave cylinder and dealer quoted me that for $260 (including labor). I think that these slave cylinders arent very robust or designed well as they shouldn't be going bad this early (70k) and for this many people. There is even a recall on slave cylinder for 07 g35 sedan but not for coupe.

Its just sad that there are so many things (Oil consumption, pinging, etc) so unreliable from infiniti and they weren't fixed even 4 yrs since g35 first came out (i.e. for 07 models).

And on a side note, fidelity extended warranty sucks! They don't cover shi*t! Their contract is so cleverly worded and that they can get out of anything. I wouldn't recommend them at all.

 

I can certainly appreciate your frustration and beyond that, your feeling that the part should last longer. Of course wear to the cylinder is relative to usage and heat. If you are in a high-temp climate or if the car sees high-heat as a result of usage type you can certainly see a shorter wear-life than you might hope for. Have you checked the fluid in the reservoir for discoloration? If not, check it out and let me know. It should have a pinkish/orange hue when the fluid is good and be darker and or discolored when the fluid has been aerated. Let me know if you have any further questions. Thanks!!

 

I was just comparing with other much cheaper Japanese cars that I have used previously. Civic SI, Corolla, Accord, Camry driven over 200k with never a need to replace any components of standard transmission (I have always driven Manual Trans) with probably one need of replacing clutch on Corolla.

And for the G, not even close to 100k, the transmission had to be replaced (because of the previous owner) and now slave cylinder. Slave cylinder is not even a wear and tear item and even bad drivers don't have to replace it that early.

Anyway, enough with ranting...SPEC-01, I take it you are talking about the clutch fluid reservoir. Thanks for the tip, I will check that later and update here.

 

Yes...the clutch fluid reservoir. Let me know what you find.

 

My clutch fluid is clear but still squeaks, I'm gonna see if changing the fluid to dot 5.1 motul or replacing the clutch assembly would fix it

anyone know how much a new clutch assembly goes for?

 

@ SPEC-01 - Standard transmission clutch fluid is suppose to be same as brake fluid which is rather orange/brownish and thats what mine is.

@stinkytofu89 - Depends on from where you get it. It would be in excess of $1500 from dealer excluding slave and master cylinder. I am quite positive its because of slave cylinder and replacing that should solve the problem. It would be about $250 from the dealer. I think the slave cylinders in these cars are defective as way too many people are having this problem and Infiniti should have issued a recall for it. They did for 2007 g35 sedan but only after people ended up with clutches sticking to floors. Keep us posted on what you do and if it solves the problem.

 

Yes, it is typically a pink-ish brown, but it should not be dark or discolored. It should not be cloudy or chunky which can happen with aeration (over heating of the fluid) or when the seals in the slave and master begin to break-down. These are just suggestions of things to check. Let me know if you have any further questions. Thanks,

 

The fluid looks good. Not discolored or chunky or anything and even the clutch doesn't feel rough when depressed. There is no 'marble like' feel when depressing clutch as is normally associated with slave cylinder failure. The squeak is highly annoying.

 

I am sure this may sound elementary, but have you tried greasing the friction points on the pedal mechanism?

 

mine does it too taking it to the dealer to get it check and hope the elite warranty fix it..

 

SPEC - I have tried everything possible.

RASTAMAN: I am quite sure its slave cylinder. Let us know if that was the case and if you were able to get it fixed.

 

will do

 

dealer is replacing the slave cylinder for me...under eliete wattanty..

 

As I suspected. Its infuriating that slave cylinders, which are not even wear and tear parts, are going out this early in g35s. Another problem to add to the list.

Let us know if it fixes the problem for good. And which elite warranty do you have?

 

infiniti elite...should be getting the car back in a few days or so will update..