tranny problems again

Pizza pig · Sep 11, 2012

thats it.

Ross@Flyindiesel · Sep 11, 2012

ok ill get a pressure gauge on it. anyone know what the desired pressure is suppose to be or whatever i need to watch?

range91 · Sep 11, 2012

Idle in drive 65-75 psi stall or wot 300-325psi. Reverse 95-115 idle stall 300-325. These are base may be a bit more with tuning and or PR springs but shouldn't be any lower.

Ross@Flyindiesel · Sep 11, 2012

ok yea ill def check that out. whats stall btw? i understand it in a converter as in stall speed but i honestly need all the help i can get when it comes to trannies. 6.0 however is a different story i know what im dealing with there. and yea its tuned so i would hope the line pressure is more than that

Pizza pig · Sep 11, 2012

get a gauge on there and let us know what the pressures are. Park, neutral, drive, and for each shift under light, moderate and WOT.

range91 · Sep 11, 2012

Stall is power brake without baking the tires should go real close to max psi.. The biggest thing with trans tuning is shortening the shift and shift pressures not really sky rocketing base pressure.the more base pressure the less lubrication for the trans so don't freak out if u don't see much higher pressures on your test

MorganY · Sep 12, 2012

:whs:

Here's the pressures and TR-P duty cycles out of my ATSG manual, and as range said, they are approximate.

TooMuch03 · Sep 12, 2012

One more thing to look at when you are watching your pressures is to see how the gauge moves up and down before and after shifts. It should move smoothly, not jumping up and down as the pressure increases or decreases. If it doesn't move smoothly it puts a lot of stress on the other componenets. I think that was a more common problem with some of the earlier flashes.

kyle43335 · Sep 12, 2012

bigaF250 said:
I am no transmission expert by any means, but in the couple little standard jap trans I rebuilt there were shims for the gears so the teeth would lock together all the way and not be out on the end of the teeth. But then again I may be wrong. I refuse to go past the pan on an auto, so I may just be talkin out of my ass. Just throwin sh!t out there

you are. lol

Mdub707 · Sep 12, 2012

windrunner408 said:
I was told by Vivian @ QuickTricks that the whole 50-60 miles worth of driving that folks think are needed for the tranny relearn is not really correct (assuming you have a healthy transmission). She says all you need to do (and I have tried this and found it to work for me) is, start from a stop. Accelerate until the tranny shifts (1-2) and stop. Now acclerate for two shifts (1-2-3) and stop. Now accelerate for four shifts (1-2-3-5) and stop. Finally accelerate for four shifts (1-2-3-5-6) and stop. Then repeat that whole sequence again and the tranny has relearned about as good as it is going to. As I mentioned, I have done this and have found it to be MOST beneficial and have not noticed any added benefit of driving 50+ miles as opposed to doing it this way. I would recommend giving it a shot and seeing how it works out for you. Hope this helps.

What's funny to me about that is every tune I've ever tried from Vivian had horrid shifting, it would flare and sometimes completely miss shifts and the engine would rev up past 4200 a couple times. It made me scared to the point I would NEVER go WOT with her tuning. She sent me a few new tunes, same thing. If I load up a tune from Doug or Eric, it went away. I would have to drive something like 2500 miles before that miss shift crap would finally go away, but it did eventually go away. Eric's tunes shift firm right away.

Younger1993 said:
:whs:

Here's the pressures and TR-P duty cycles out of my ATSG manual, and as range said, they are approximate.

Awesome! Thanks for sharing that.

kyle43335 said:
you are. lol

LOL

Ross@Flyindiesel · Sep 12, 2012

yes thanks big time for sharing that! and ive tried TSD's tunes and Matt's tunes and both do the exact same thing so i dont think its the tuning but if all else fails then before i pull the tranny again ill try that just so i know i covered my ass!

Mdub707 · Sep 12, 2012

It still makes no sense to me why one tune would do it and the others wouldn't, I know a lot of people have used her tuning and liked it a lot. I don't really want to be the guinea pig and keep testing it though, that miss shift was quite scary when it happened.

Sully · Sep 12, 2012

Josh at rcd was able to increase the initial line pressure on my tunes.meaning before any learning had begun.mine always flared at first after running and it helped a lot, but my direct clutches were about gone by that point

Ross@Flyindiesel · Sep 12, 2012

yea im gonna try to get pressure readings this weekend first and see what its doing. im pretty sure the clutches are still good

chappy · Sep 15, 2012

I can tell you my old tranny did this when switching a new tune of Matt's. The same tranny did not do it with TSD"S or IDP's tunes when first installed. The trans even had the gogo solenoid in it. I had a pump failure and that ended the tranny. I put a used tranny in it and it was fine even with Matts tune. I am using the same gogo solenoid as well. I only found the pump problem because it quit holding pressure for the torque convertor lock. A new pump from ford was like $500 if I remeber.

Ross@Flyindiesel · Sep 15, 2012

yea im hoping the pump is the problem. did it look like anything was wrong with it when you pulled it? and if its the pump ill prob put a modded on in it while its out

Ross@Flyindiesel · Sep 18, 2012

still havent gotten numbers yet but hoping to get some thursday evening or friday morning

kingranchstroker · Sep 18, 2012

rdunagan said:
well its not a suncoast rebuild kit. he used the black high energy clutches and its a friend of mine that rebuilt it and is good at what he does. and yea we pulled that transgo crap out of it along time ago and plugged the holes up. im going to drop the pan this weekend and put my gogo soleniod in from my other truck and see what happens.

Just a question but what's wrong with the transgo kits?

Ross@Flyindiesel · Sep 19, 2012

the kit that i used had a pressure relief valve with it and when your trying to up the pressures with tuning it just blows it off and tears up the tranny. the other stuff is good from what ive heard but i wouldnt ever use one again!