New 3rd Gear Problem with Manual VB 47rh

After talking with Rick Fox, we are leaning more and more on TV lever adjustment. I wanting to hit up the local Rual King and see if they have a small turn buckle I can mount up there to get fine adjustments instead of just guessing with Zip Ties!!! Just go all the way off and each time I drive it, just give it a little turn untill I find the sweet spot.... Hopefully that works!!!! Then figure out a way to lock it out for good.
 
Yep, back off the TV cable a touch until it shifts on your command.

Lavon
 
LAmiller said:
Yep, back off the TV cable a touch until it shifts on your command.

Lavon
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Thank you Sir!

One thing I did notice this morning driving.... The warer the trans got, the longer it took to go into gear. By the time the trans hit 100*, couldnt even get it to go to 3rd at all......

But i will post if i find a nice little turn buckle that i can use to have a more accurate adjustment!
 
Did you do the TV modifications in the kit?

Like I mentioned I have never had to adjust the tv with the TFOD-3 kits. Simply hooked it up and they shift nice and firm.
 
Bosshawg600 said:
Thank you Sir!

One thing I did notice this morning driving.... The warer the trans got, the longer it took to go into gear. By the time the trans hit 100*, couldnt even get it to go to 3rd at all......

But i will post if i find a nice little turn buckle that i can use to have a more accurate adjustment!
Click to expand...


Fluid temperature changes the viscosity and will effect pressure based on how thick the fluid is, you should be able to find a happy medium by adjusting the TV cable.

Lavon
 
I've never had a problem with TV position on a full manual vb. I think you have another issue imo.


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*Update*

Been driving around the past few days adjusting the TV cable as I go. Heres how I have it set up currently to get the adjusment just right.......

20150324_205854_zpso7jjbji9.jpg


Unfortunatly, nothing has been working. The best i have had it was the first time i shift to third after starting it up, there is a 4-6 second delay, then 3 slides in. The longer I drive the worse it gets until 2-3 times of going into 3rd and it wont go at all.

Im leaning toward another problem, but Im pretty Auto dumb, so I have no idea what to do now........ What else can I check, adjust, look for????? This is getting frustrating beyond belief, and leaning towards embarassing. Its gotten to the point that i parked the truck this moring after trying to drive to work and couldnt go over 45mph......
 
Sounds to me like you have an internal leak.


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Does the shifter rod move in and out of the shift arm smooth? ie. is it adjusted properly? Just throwing it out there but is it possible it is slightly out of adjustment causing the valve to be out of adjustment inside letting fluid leak past once warm?
 
zfaylor said:
Does the shifter rod move in and out of the shift arm smooth? ie. is it adjusted properly? Just throwing it out there but is it possible it is slightly out of adjustment causing the valve to be out of adjustment inside letting fluid leak past once warm?
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As far as I can tell, yes. 1st and 2nd are very crisp with a slight delay (2 seconds MAX) and all the linkages are tight. And downshifting from Park through all the gears is also crisp. If it was shifting well cold, I would think adjustment would be more glaring as the possible problem......
 
Subscribed, had the same problem except couldn't get third to engage at all. Bought a virgin valvebody to put another tfod3 kit on and will try it again after I go through the trans.

Does flipping lockup before the shift change how well it goes into 3rd?


LAmiller said:
Fluid temperature changes the viscosity and will effect pressure based on how thick the fluid is, you should be able to find a happy medium by adjusting the TV cable.



Lavon
Click to expand...


Lavon, with the Transgo TFOD3 kit, are you running all of their servo pieces?
 
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Chrisd91 said:
Does flipping lockup before the shift change how well it goes into 3rd?
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Not at all, and when its not in 3rd, it wont go into OD (45mph at 2800RPM is not fun to drive around!). And Im trying everything to atleast see some kind of improvement. Only thing that has changed is the further forward I set the TV the worse it gets. Full back gives it 4-8 second pause before the shift, then once the trans is warm, doesnt shift at all......
 
My first to second gear shift was lightning fast and hit firm or hard kind of. Second to third was incredibly fast too, so fast I was getting some bind until I added another spring to 2nd gear servo and loosened up direct clutch pack a little more. Now lock up always had a slight delay depending on how much power I was putting through transmission. If I was on it hard it would lock up quick, if I was going really easy it would take a second or half.


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LAmiller said:
To test, unplug the 8 pin harness going to the transmission. Start in Neutral, drop directly to 1st and manually shift 1st/2nd/3rd. If it shifts to 3rd manually, its an electronic failure, repair as needed. If it still doesn't shift you may have something like a 47rh Overdrive piston support in the trans that is dumping all your govenor pressure into the OD section and it can never build enough pressure to hit the switch valve.

Lavon
Click to expand...

Searched and found this post and it go me thinking. When it does go into 3rd, I then hit lock up, followed by OD. Every time I have hit OD, it SLAMS in and drops my RPMs 800 at least, so much so that i normally have to get out of the throttle a bit knowing how hard its going to hit....... Maybe a leak going into and over pressurizing OD???????
 
Quick update......

Went and bought a turnbuckle to adjust the tv lever more accurately. Drove the truck around while adjusting the lever and could not get 3rd. 1 and 2 had a very slight delay. Worst news is, it has now developed a squeal much like a squeaking fan belt bit more pronounced.

I'm at a loss as to what to look at.... Servos? Band adjustments? Air in the lines?
 
I think at this point you need to pull trans and go through it.


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Ghostman said:
I think at this point you need to pull trans and go through it.


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Agreed.

As mentioned my 1-2 shift was only a very slight delay and my 2-3 shift is almost instant
 
Ghostman said:
I think at this point you need to pull trans and go through it.


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Click to expand...

Im very close to that, but want to make sure I have all my ducks in a row and possibly be able to narrow down the problem to tell the trans builder to give them a road map.

Mainly because the trans was in working order before it was put in the truck and now this is happening.......
 
A squeal is most likely a high pressure leak in the vb. had one in a 42re develop the noise before and a vb swap cured it. Sounds logical given your problem.

Your 3rd gear problem is probably one of two places. Either the front drum is leaking pressure(likely the inner seal that should have the updated version used) or a vb problem(leaking or incorrect assembly). Vb is easier to swap and while its out you can air test the front drum.


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Have you tried driving around with a gauge connected to the accumulator port to verify the pressure and see if it drops or does anything funny when 3rd gear is manually shifted?
 
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