On my way home a couple days ago I went to get off the freeway. When I pushed in the clutch pedal it made a grinding/vibrating noise. I let off, then tried to push it in to shift. The clutch seemed to disengage fine and it shifted smooth, but a shrieking noise with a loud clicking emitted from underneath when I pushed it in. I pulled to the side of the road and killed the engine, the noise went away immediately. I assumed it was either my clutch slave/master cylinder and had it towed home. I pulled both off and found the shaft/pushrod on the slave cylinder to have come out of position and just hanging in the rubber boot.

Ive had to work since then and havent had time to work on my car. But Ive been thinking. The clutch slave/master cylinder is completely manual, as in no mechanical parts like a brake booster. (clutch pedal pushes in pushrod on master cylinder, which sends fluid to slave cylinder, which pushes pushrod into clutch fork, which releases throwout bearing, which releases pressure plate and clutch disk)So if it made a noise it wouldnt stop when I turned the engine off? I just installed a cheap $200 Oreilly's clutch about 1200miles ago and everything seemed fine, but Im starting to get worried. Im 90% I installed the clutch right though, and I have yet to abuse it.

Any help on what it could possibly sound like? The car is about 2 hours away right now, so itll be til atleast next week when I can work on it.

Thanks

 

Oh and btw, I tried to start it back up after I pulled to the side of the road. All I felt was a grinding vibration in the pedal and it would go all the way in. I tried to make a resistor for the neutral safety switch but ended up having it towed.

 

any help?

 

Did you ever get this fixed. What caused the problem? I'm having the same problem.


Thanks,

Johnny

 

same...been getting a clicking sound when clutch engaged in neutral after starting the car, my 300zx did this and it was the throw out bearing, however tonight i had the same problem and i killed it (same as first guy) then restarted, wouldn't let me into a gear and then killed it, restarted it, try to force it but didn't try to hard (don't want to mess up the synchros) but then finally let me in...i have a grinding sound when driving slow and starting off the line along with if i leave it in gear and leave the clutch in for over like 20 seconds it starts clicking and ****...kinda pissed only had the car for what? 3 maybe 4 months now...any luck finding out what this is?

 

I've been searching old threads and it sounds like our hydraulic system is bad. It's probably either the slave or master cylinder. I just put in a new clutch a year ago so I'm thinking it's the slave cylinder thats gone bad for my car. I'll probably change mine unless someone proves me wrong.

Hope someone puts some light into this thread.

 

i'm just hoping that someone tells me pretty soon because i don't know how many times i can drive to and from campus and work...i just need to get it tested out i guess

 

Actually it turned out in my case the bolt on the clutch fork backed out and pushed the fork into the outer cover of the pressure plate. Turned out to be a simple fix.

 

By the way, what exactly is it doing? If its making a similar sound it may be the throwout bearing. If the clutch master or slave cylinder is going out, the pedal will go soft or get stuck to the floor board. I went ahead and changed both mine out and its not too hard to do(on the LT1 T56 atleast, dont know about the 5-speed in the V6's). I can give you some basic instructions if you want.

 

it was doing the same thing and what happened to you is the same thing a guy at work told me to check...how do i check it...i dunno...simple instructions would be great...however when your pin fell out could you still drive on it? just wondering...looks like i need to get it to the shop ASAP huh? if it's the same thing then i will post on it to be the deciding factor...now, what causes this and how can we change that?

 

How hard was the installation of the slave cylinder? Hope it isn't a pain. How many hours to take it off and install it?

I made a new thread also about this.

 

Oh I didnt read your sign correctly, If you have an LS1 T56, you have to drop the transmission to get to the slave cylinder. The clutch hydraulic system shouldnt make any noise, Id guess its your throwout bearing.

As far as instructions on how to do it. On the LT1 T-56 its mounted on the side of the transmission. You loosen the two bolts and it slides off. You then have to take the bottom of your driver side dash off to get the master cylinder off. Its mounted behind the brakebooster on the firewall, but you have to disconnect it from the inside(the rod is connected to the pedal and the whole unit to the firewall). Once you have it off you have to use something small and thin like a pick to disconnect them from the the line. If you need help how to connect them and bleed it, let me know.

 

a guy at work that had a few lt1 and ls1 cars told me it was the pin that came out of the clutch fork as well, without even hearing that problem before that's what he diagnost(sp?), however, i do have an extended warranty on my car so i'm taking it to a shop here in town that does excelent work without ****ing you over so i'll let you guys know what i find out tomorrow...peace
kc

 

well, it's not the clutch fork, i couldn't get it to work so i had it towed to a shop and they drove it around, so i drove it around now when going to all gears it's not a grinding soung but almost like one, it's an internal problem so i dropped it off at a different tranny shop and they are going to drive it and rip it apart and let me know the damage...

 

my clutch pressure plate had 3 cracks in it along with the clutch itself had a huge crack along it with one of the springs had came out...still drivable and durable, dunno how, but replacing it with a stage 3 RAM clutch, new pilot bearing, throw out bearing, and higher flowing slave cylinder...also had the stock flywheel resurfaced and balanced...