Clutch sticking
 

Hidy. In searching around the forum, I see a lot of instances where the clutch will stick due to heat.

In my case, it's the cold -- beyond question -- that's sticking my clutch. Is this likely a master cylinder issue?

My mechanic is good and trustworthy, but he's generally more of the "if it ain't Totally broke, don't fix it." So sometimes it's just easier to bring parts in to him & say, "do it" rather than leave it with him for a couple of days.

Any thoughts? Any good way to be sure?

Explain "Sticking?" Does the clutch pedal not come all the way back, stays on the floor? When was the last time you did a drain/fill on the clutch fluid, is it full? We can only assume (hate that word) your mechanic checked all the possibilities. If your clutch is sticking it is broken and you need to find a new mechanic!
Gary

The clutch pedal does not come all the way back up. I can pull it up with my foot. Also, when it gets stuck, it's just past the friction point -- so I can actually engage the clutch, shift, and disengage with the very little play in the pedal.

I'm inclined to think it might be the grommet in the firewall that needs to be greased. The sticking correlates 100% to cold weather. I made it through last winter, but would love to take care of it before the season really hits this year.

Is there a good way to access the grommet to be able to lube it? How about the pedal spring?

...and I don't really know when thing was drained and filled. I just ask that my mechanic keep me on a maintenance schedule. But with 170k miles, he doesn't do a lot nowadays, I don't think.

I have the same issue on mine. Only happens on occasion, perhaps more frequently when there is a sudden change in weather temp. I have already replaced both master and slave cylinders, flushed the fluids more times than I can count, and re-greased every bushing/join I could find on the pedal assembly. Still does it every now and then. Pretty much given up at this point

Bleed the clutch master and slave real well. That fixed mine.

Well long time no see...

I had the same issue with mine, in 100 degree weather it was like i was just pressing on the floor. I had to put my foot underneath it between shifts just to get it to come back up. I bought the rjm performance pedal which was one of the first mods I had done and for the most part it fixed this issue. There might be about 1/4-1/2 where it does not fully return now but its really not noticable, when you push it is it comes back up everytime. I've had it installed for a few months now and that problem hasn't come back. Ryan also recommended swapping the dot3 fluid for dot4.

Interesting... I might consider changing the pedal if I can't solve the problem with lube (or a second opinion of a new mechanic).

I heard and would agree with the cat boiling the fluid.

A few members, myself included, had similar symptoms when adjusting the clutch pedal position. If you adjust the clutch pedal too low, this is exactly what will happen. An easy thing to try is to move the pedal up by turning the adjustment rod CCW by 1/4 to 1/2 a turn. This will move your clutch position up a tiny bit.

https://g35driver.com/forums/engine-...t-point-7.html

My clutch is already its stock high, as far as I know, but it might be worth a shot. The pic on that thread will help me in getting access to some parts I want to lubricate, too.

I think I'll hit it all pretty hard with silicone spray (which I already have) unless anyone thinks that's a bad idea.

ryan explained to me it mostly had to do with the spring having to kick the pedal back up the other half of the way or something like that. ill find his email where he explains why it happens. im at work so ill post it later.

Its not all in the pedal. When my clutch drops, it also engages lower and is even MORE binary (engaged or disengaged with no in between.)