PaulR

Hey everyone.

After a bit of searching I can't seem to find a good answer to my issue.

I changed the clutch, throwout bearing, and pilot bearing on my 88 4Runner 22re 4x4 about 2 weeks ago. Last night on my drive home I noticed a bit of a whine had developed after I got off the highway. At first I thought a tire was rubbing so I didn't think much of it and figured I'd check it out the next day.

Now this morning I went for some breaky with my dad and on the way home I noticed the whine was getting worse. I check all four tires and saw no rubbing so I continued on my way and as I went I pinpointed the noise to my transmission. By the time I made it home it started knocking as I decelerated.

This whine is totally not related to any gear or engine speed. It goes directly along with the speed of truck.

I have taken a video for you to hear exactly what I'm talking about. Sorry for the terrible Iphone quality. I jacked my rear end up and hung my hand out the door while accelerating.

http://www.youtube.com/watch?v=Rt76P0zzGIA

This truck is new to me. I put the clutch in when I bought it so I know nothing of it prior other than it recently had the head gasket/timing chain changed.

Thanks for any assistance.
Paul

The MAN

sounds like gear or bearing noise to me
don't want to sound condescending, but it does have gear oil in the tranny right? what brand of throwout bearing and pilot bearing you used?

PaulR

Don't worry about the condescending. I would have wondered the same thing reading the post.

Yeah it's got fresh gear oil.

I just checked it and it's still topped up.

The bearing came with the Sach's clutch kit I bought. The bearings were exactly the same as the stock ones I pulled out.

The MAN

now one other thing... have you checked if the noise is coming from the axles?
I don't advise it, but jack the back up as high as possible... REMOVE the drive shaft and run it... don't go too crazy with speed as you don't want to shoot gear oil out
if there's still noise, then tranny or transfer case related... if it quiets down, then it's the diff

you can always just not do that stupidity I mentioned and just stick your head under there and listen for it... have a buddy help you with controlling the speed sitting in the cab while you're under there

oh yeah, what kind of gear oil is this?

PaulR

I pulled off the driveshaft and while the noise has significantly reduced and the knock isn't there on deceleration, i can still hear it.

I'm using 75w-90 synthetic blend.

The MAN

ok... jack it up on all 4 and try 4 HI?
try having the front driveshaft out too?

spc mike

wow, whatever it is, its something major...... That doesn't sound good.

PaulR

Still whines in 4 and I don't see a need to take that driveshaft off if it wasn't spinning when i heard the noise in the first place.

I'm thinking all signs point towards a very messed up transmission... good thing i just wrestled to put that thing back in 2 weeks ago.

The MAN

just for grins... put some 75W140 in there and see what happens

PaulR

I would if I could go somewhere to get it. My other runner blew a brake line or something so I'm stranded. Really loving life today... Haha.

The MAN

when it rains, it pours!

skypilot

iTrader: (1)

Perhaps the out put bearing in the xfer case. the driveshaft would have taken a lot of pressure off the tailshaft.

Or the rear differential! Sounds like Pinion bearings! Had mine go out at 320,000 yours are way worse.

PaulR

With great embarrassment I come with the solution to this problem.

Being a VERY beginner mechanic, people called me crazy for deciding to change my own clutch. And boy did I prove them wrong... or so I thought.

I was under the impression that the transfer case and the transmission shared the same oil. So when I went about re-filling fluids at the end of the clutch swap, I only filled the transmission and left the transfer case empty. Bone dry empty.

So if any of you were wondering how long you can run a Toyota transfer case without any oil before you start discovering problems, you have your answer. Roughly 300 kilometers.

I filled it up and it runs like a champ now. Oh Toyota...

I'll leave this up as punishment to myself for being foolish. Haha

Thanks everyone for your helpful tips.

The MAN

whew!