Hoping someone can help me with my problem.

My transmission makes a squeaking sound (like worn belts) that seem to match engine RPM. You can hear this sound while idling and while driving, and with the clutch released and when pressed in. I've been searching around other forums and in google but can't seem to find my specific problem.

It started after I had my transmission oil seal changed and also changed my pressure plate. The mechanic that did the repair said that it was caused by the pressure plate and would go away in a few days. I'm not sure I believe that.

Any help would be greatly appreciated. This issue is driving me crazy!

 

Did he replace the throwout bearing and pilot bearing too? Which transmission seal did he change? the mainshaft seal? typically you take the transmission apart to do that one, and pull the mainshaft out.

 

Sorry, it was the rear main seal that goes in the engine block that was replaced since it was leaking oil. He said the bearings were good so he didn't replace those.

 

https://www.youtube.com/watch?v=c-80...ature=youtu.be

Here's a video where you can clearly hear the squeaking sound

 

Anyone? Any help would be god sent at this point...

 

Are you sure the sound doesn't go away when you push the clutch pedal down ? Just press down the clutch pedal until it takes up the free play and see if the sound goes away. It could be the slave cylinder rod needs some grease on it.

Also, if you ever replace anything clutch related, it's best to replace the entire assembly as a set. Exedy makes the best clutch kits.

 

I've confirmed that the sound doesn't go away when the clutch pedal is pushed down that's why I kinda ruled out the release bearing. I've also checked that the slave cylinder is greased properly.

I'm really lost with this squeaking noise

 

Your throwout bearing should be spinning all the time. Your pressure plate is bolted to the flywheel, meaning whenever the engine is on, the throwout bearing is rotating.

 

From what I've read around the net, the sound should go away when the clutch is pushed down if it was the throw out bearing that was bad. That's why I'm getting more confused about the noise in my transmission.

 

If the sound goes away when the clutch pedal is pushed that indicated a "mainshaft bearing." There are three. There's the input mainshaft bearing (a ball bearing MOST common to wear on a high mileage Honda), the outer case mainshaft bearing that slips on, and inside your flywheel is a pilot bearing. If you look at a diagram...see when the engine is on, the flywheel and pressure plate are always spinning.

Now. The throwout bearing on our cars when the pedal is depressed is of course spinning, as the pressure plate spins and is touching it.

If the sound gets louder when you push the pedal it could be the pilot bearing (as the outer part is on the flywheel is it spinning, and with the pedal in the clutch is not, therefore the pilot bearing is rotating relative to itself, the outside/inside are moving.) bear in mind the pilot bearing is physically always spinning so to speak when the engine is on, but when the pedal is not pressed, the inside/outside are not moving relative to each other.

hope this isnt confusing.

anyway. I talked to a mechanic at Tires Plus once before who told me what you were told, and he turned out to be wrong as well. I am an ASE certified master tech, so you can take my word on this as I've rebuilt my own transmission which had a misdiagnosed input shaft bearing.

To reiterate. A bad THROWOUT bearing (moved directly by the clutch fork) will be rotating all the time when the engine is on, pedal in or out, because the fork is always pushing it a little against the pressure plate.

(However...if the throwout bearing were NOT touching the PP at all when the pedal is disengaged, there'd likely be a rattling of the fork, but either way, this is a problem and needs to be fixed.)