Squeaky sound when depressing clutch pedal

[akina335]

With the engine off and pushing in and releasing the clutch pedal I hear squeaking coming from underneath the car somewhere. Not sure how long this has been going on because i rarely just push in the clutch with the engine off, unless I’m going to start it. But usually the door is closed when I do this and this squeak is barely audible so I guess I havent noticed it. What could it be? Bad slave cylinder?

My M3 is a 09 with only 29k miles.

[serranot]

Originally Posted by akina335

With the engine off and pushing in and releasing the clutch pedal I hear squeaking coming from underneath the car somewhere. Not sure how long this has been going on because i rarely just push in the clutch with the engine off, unless I’m going to start it. But usually the door is closed when I do this and this squeak is barely audible so I guess I havent noticed it. What could it be? Bad slave cylinder?

My M3 is a 09 with only 29k miles.

I’m guessing it’s just the throw out bearing pressing on the fingers of the pressure plate.

[akina335]

Little update. I drove the car today for about 30 miles (haven’t driven it for about two weeks) and when I got home I pressed the clutch pedal in with the engine off and couldn’t hear any squeaking.

[Richneerd]

I used to have it too, on all my manual cars.

Cold days, squeaky, hot days, doesn't do it.

Maybe lube?

[pbonsalb]

Lube or worn pedal bushings.

[amrazM]

Pedal bushings if the sound is inside, pivot pin if it’s outside.

[akina335]

Originally Posted by pbonsalb

Lube or worn pedal bushings.

Like I said in my post the sound is coming from the outside of the car, underneath rather. Not inside, I’m well aware of the pedal bushing squeaking and I don’t have that. Thanks for the heads up though.

[pbonsalb]

The only simple thing you can do if it is inside the bell housing is to pull the slave and check the tip of the pin. Is the plastic gone? Is the grease gone? If it’s more than that, you have to pull the trans to inspect the pivot pin on the other side of the clutch fork, the trans input shaft splines, the guide tube, and the release bearing.

Since it is barely audible, and you hear it only on the rare occasion when you depress the clutch with the engine off, I would not worry about it. If it gets worse, then you know what to do.

[akina335]

Originally Posted by pbonsalb

The only simple thing you can do if it is inside the bell housing is to pull the slave and check the tip of the pin. Is the plastic gone? Is the grease gone? If it’s more than that, you have to pull the trans to inspect the pivot pin on the other side of the clutch fork, the trans input shaft splines, the guide tube, and the release bearing.

Since it is barely audible, and you hear it only on the rare occasion when you depress the clutch with the engine off, I would not worry about it. If it gets worse, then you know what to do.

Thanks for the info. I’ll keep an eye on it, if it get worse I’ll try that. Maybe next time I’m underneath there I can bleed the clutch and inspect it at the same time.

[amrazM]

Pivot pin as per my response above. Bmws are notorious for the plastic pivot pin starting to squeak.