I was coming down the parkway thinking about it because it did it before, so after accelerating harder, not WOT, the 3-4 shift wouldn't happened, so I revved a bit and then a loud screetching squeel like a bad belt then she caught. After that, it ran fine. I've had this happen during WOT 2-3 shifting and wondered WTF? No squeel that time that I noticed. Is there a belt in there causing this that may be worn? A clutch pack or torque converter controller? Any suggestions? Basically it does this when first driving, under 5 miles or so.

 

The 3-4 shift should never occur at heavy throttle. If it does the transmission will break. The belt squeal is probably your engine belt install a gatorback.
Alan

 

I just replaced the belt to a Gates not 4 months ago, it did this as it was catching. I contacted my tranny guy and he said it sounds weird that it happens so infrequent, so suggested changing the fluid and filter, then cracking the filter open to see any debris. I was going to change the fluid soon enough anyways so we'll see. If I see him tomorrow or my other buddy I'll see what they'll say, but hoping it is just a fluid issue. Oh ya, I guess I shoulda mentioned that I beat on it decent and have tried to do a hard 3-4 shift more often than mom wants to hear about. These particular times though, I was actually letting off, so maybe fluid was pumping too slow or something wasn't on the same page as my foot. We'll see.

 

Well, the fluid change seemed to help, but it's back today pretty bad. Correct me if I'm wrong, isn't there some kind of belt in the tranny, Kevlar or something? Maybe in addition to the 1-2 or 2-3 spring, it might be worn too. I can't remember where the small belt is or maybe it was from a different tranny.

 

stop driveing get it checked...

thats what mine did right befor it blew...

it would make that sound around 2000 rpms

then it went away for like a day and then one day i was racing my
buddy and i was going about 110 and the noise came back and would
not go away unless i was in OD

i drove 5 miles home after i let it sit for a little and next day my truck will
not back up and it makes the noise in nutral now too

 

Ya, no kidding, just my luck too it will. I've been skating on thin ice I think, so now's as good as time as any to replace the springs, 1-2 and 2-3. I gotta make a list, a few threads below on what to buy, looking in my Bible of a factory manual, it's reaffirming my thaughts. It looks easy enough, worth a look anyways and from the looks of it cheap, aside from the fluid and filter.

 

I found out more what the problem is. I figured I'd go out and get some new shoe laces, cat ate my others (sh+t piles up little by little), so anyways, as soon as it goes into o/d, it's like going into neutral. So I think, ok, turn o/d off and everything works fine. I think the 1-2 and maybe 2-3 springs are ****, but turning o/d on and off is like shifting in/out of neutral. Now what's all involved I wonder, Jebus Rice, what next?

 

Hmmm... I have a problem with my '02 shifting upshifting from OD (see thread. Initially I lost OD entirely, but this fixed itself (???).

I do have a whining (almost like a squeal) problem in colder temps when the truck hasn't been warmed up. I am pretty confident that it's not a belt since it seems to go away if I turn off the OD.

 

That whinning or maybe whistle??? If it is the same as what I had, magically goes away, it may be the alternator. I've heard of it, the idler pulley, tensioner pulley, a/c pulley and even the p/s pulley. I'll bet it's the alternator, mine just went ***** up on Monday, but the whistle has been gone for months now. I'm fairly confident I'm gonna replace the 1-2, 2-3 spring assemblies in addition now to the o/d servo. I actually replied to that thread to say yes, o/d off fixes it.

 

I had the same thing, loss of OD like it was going into neutral, turned out to be the 3rd accumulator spring, easy fix, but it was a good time to do a rebuild with shift kit and grooved valves for some reliability.

 

If you are going to do the 2-3 also then you will have to remove the valve body to gain access to it.

 

At first mine lost OD entirely and then somehow it seems to fixed itself. The only problem I have now is that downshifting from OD is sometimes very harsh. Other times, it's completely normal.

Is this still a symptom of a failing OD servo?

 

Hopefully, the more I read the more I get scared it's the o/d band deeper in the tranny. Hard shifts as described seem likely it's the band, I hope not brutha. I'd do what I am gonna and fix all the springs, pistons, servo's etc and maybe pop for an aftermarket valve body. It sounds like you've been living longer with what just happened to me. I'm speaking with my tranny guy tomorrow and see what he says. I'll keep notified.

 

I got info from a local shop and he said that if the OD completely goes, nothing else will be affected. If I turn off OD on my truck, the transmission works as normal, it just EATS gas.

I've got 50,000 km on my trans since it started "failing". I would like it fixed because it's annoying and I'm afraid this constant hard shifting is going to break more parts.

 

Ya, mines the same, o/d off it's good, liking the higher rev sound, but ga$$$ will cost me. I still think because a year ago my 1-2 shift and 2-3 was similar. Not enough of a pattern to be for certain, but if we're replacing, might as well go ***** out. My tranny guy is good and thorough so he'll suggest changing a few things as preventative.