Transmission squealing?

[Ranger4x4.0]

I have a 98 4.0 manual transmission. The past few days, when I start my truck up, it squeals really bad for about a minute. It only does it when I first start it that day, other starts, its fine. It sounds like it's coming from the transmission. It's been below freezing the past few days so would that have anything to do with it? I posted a video of it doing it on youtube- https://m.youtube.com/watch?v=N113rpDyXqA hopefully that will help. Thanks in advance!

 

[Big Jim M]

First thing I would do is take the belts completely off and start her cold to MAKE sure the noise isn't coming from up front.
Big Jim

 

[Ranger4x4.0]

When it was doing it, I opened the hood and it wasn't coming from the belt. I'm positive its not coming from under the hood.

 

[black_demon69]

check fluid level on trans for level and right kind it should be ATF Mercon IV i believe.

 

[jeremysdad]

Throwout bearing? Could be heading on it's way out. Try pushing the clutch pedal when it's squealing, if it shuts up, that's probably the issue.

 

[RonD]

Yes ^^^

But throwing bearing usually only makes noise when clutch pedal is in, and it is being used, but it can happen the other way as well.

So does the noise change with clutch pedal movement and or if trans is in Neutral with clutch pedal out?

Pilot bearing is also a candidate, this supports the engine end of the trans input shaft.
Pilot bearing is in the end of the crank shaft, when engine starts, clutch in, the crank is spinning at 1,000rpm but input shaft is 0 rpm, so this bearing could squeal if it is going bad.
If you shift into Neutral and let the clutch out, the crank rpms and input shaft rpms would be the same, so if noise stops at that time then pilot bearing is most likely the issue.

Transmission itself isn't spinning when back wheels are stopped and clutch pedal is in, at this time everything in trans is stationary, so nothing could squeal.
When you let the clutch pedal out the input shaft will start to spin at engine RPMs, input shaft spins counter shaft and gear selected, if in neutral then just the input shaft and counter shaft are spinning with clutch pedal out.
Trans output shaft only spins when back wheels do.

Cam position sensor syncronizer is at the back top of the engine block, it will make squealing noise when bushings get worn.

Because fan belt squeal is much more common than any of the above I would still do the test recommended by Big Jim, it costs nothing, and noises can reflect and trick your ears

 

[AndyB.]

On these transmissions, the release bearing is in contact with the fingers of the pressure plate at all times. There is a spring as part of the slave that maintains that contact.

 

[Big Jim M]

If it is thought to be the CPS I would swap it out immediately. However if throw out bearing not so fast! I have driven noisy throw outs for years and many miles. I just waited till the clutch needed attention and then changed it.
Big Jim

 

[Ranger4x4.0]

Well, I started it up today, and it didn't do it. It didn't get below freezing today, probably around the 50s.
So maybe it could be the cold weather?
About 5-7 months ago, I took it to the shop, and they lubed the throwout bearing, changed the tranny oil, and bled the clutch because it was impossible to get into first, and my throwout would squeal taking off in first. It's a little easier to shift now, but the throwout squeal hasn't went away. Could it be my throwout bearing making that horrible squealing when idling?