I have a noise that disappears when I push the clutch down. It's not really loud, but I notice it and it annoys me. I am guessing throw out bearing, but if anyone has any other ideas, I'd appreciate it!

I agree on the throwout bearing. Just sounds like the culprit that you are describing.

I have one of those in my Fiero also.....

quote Originally posted by Tony Kania: I agree on the throwout bearing. Just sounds like the culprit that you are describing.

What's annoying is that the car only has 30k on it. Probably dried up over time or due to sitting for long periods.

Should have stated that my 87 GT has that issue also. I just put the motor in her last August. I have around 2100 miles since then. Have had the "noise" since 1000 miles. Don't know what I did wrong, but I did something wrong.

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I think you guys are talking about the infamous "Getrag rattle". It's pretty common, and seems to be benign.

quote Originally posted by Blacktree: I think you guys are talking about the infamous "Getrag rattle". It's pretty common, and seems to be benign.

I've never heard this one before (pun intended)? The "Getrag rattle?" What causes it exactly? Or is this one of those mysteries of the unknown?

[This message has been edited by FieroFanatic13 (edited 04-24-2009).]

I don't know for sure. But I think it's caused by loose tolerances inside the transmission.

quote Originally posted by Blacktree: I don't know for sure. But I think it's caused by loose tolerances inside the transmission.

Good grief.

My noise comes and goes as I apply the clutch though. Hmmm...

quote Originally posted by Blacktree: I think you guys are talking about the infamous "Getrag rattle". It's pretty common, and seems to be benign.

The input shaft sorta does stupid things when it is not in gear and the input shaft is spinning. The cause is something to do with the input shaft bearing.

The last car I worked on had a BRAND NEW getrag, and it sounded like the clutch was held on by 1 bolt (kidding).

quote Originally posted by darkhorizon: The input shaft sorta does stupid things when it is not in gear and the input shaft is spinning. The cause is something to do with the input shaft bearing. The last car I worked on had a BRAND NEW getrag, and it sounded like the clutch was held on by 1 bolt (kidding).

So maybe I don't need to worry about it? I'm dropping the cradle anyway to install a turbo kit (just like the space to work) and new struts, and figured I should do the clutch while I had it out already. But I'd prefer not to have to mess with it. Seems to operate fine despite the noise.

You couldnt fix it even if you wanted (to my knowledge).

There is no reason to anyway, you will be in fine shape.

quote Originally posted by FieroFanatic13: My noise comes and goes as I apply the clutch though. Hmmm...

Same here. I have a rebuilt FWD Getrag, and it did the same thing from Day 1. It's my belief that slop in the input shaft bearings allows the shaft to wiggle around a little bit. So when you disengage and re-engage the clutch while it's in Neutral, the shaft will wiggle to a slightly different orientation. And the bearing noise will increase or decrease depending on how off-center the shaft ends up.

Even brand new bearings will have a little bit of slop in them. So there's really no practical way to eliminate it.

quote Originally posted by Blacktree: Same here. I have a rebuilt FWD Getrag, and it did the same thing from Day 1. It's my belief that slop in the input shaft bearings allows the shaft to wiggle around a little bit. So when you disengage and re-engage the clutch while it's in Neutral, the shaft will wiggle to a slightly different orientation. And the bearing noise will increase or decrease depending on how off-center the shaft ends up. Even brand new bearings will have a little bit of slop in them. So there's really no practical way to eliminate it.

This sounds EXACTLY like what I'm experiencing. This is my first Getrag Fiero, and I'd never had a similar noise in any of my 4 speeds unless the throw out bearing was dying.

Thanks for the replies everyone!

Another reason you can probably breathe easy, is that if the T/O bearing was worn, you would hear the noise when you held the clutch pedal to the floor because that's when it's spinning. You wouldn't hear a worn T/O bearing with the pedal released, because that's when it's no longer rotating.

Very interesting feedback. I myself planned on having to take out the trans and install a new throwout bearing. I am playing the wait and see if anything breaks game. I am going to go with the getrag noise opinion. I too thank all for taking on this topic.

Thats very interesting to hear about the "getrag rattle"!

I have had two Fieros with getrags - both stock and both between 80,000 and 120,000 miles on them, and I have never heard that rattle before!

It wasnt until I installed a remanufactured FWD getrag in my Fiero with a Spec clutch that I started to hear that noise. I just wrote it off as t/o bearing noise - since the Spec clutches are "known" for bad t/o bearings......

Are the getrag input bearings still available?? I was just talking about this topic to a friend the other night...

Mine does the same exact thing with the Getrag when in neutral without the clutch depressed, but depressed it goes away, even if it's still in neutral. This is also on a fresh rebuild, less than 2k miles; new clutch and TO bearing.

Hey guys...have pretty much the same thing in my Isuzu 5 speed (Spec3 clutch). Just FYI....