3 transmissions in a month - Ford Powerstroke Diesel Forum

 
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post #1 of 3 Old 06-14-2013, 10:57 AM Thread Starter
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3 transmissions in a month

Hey guys I could really use some help and input on my problems I have been having. About two months ago I put in swamps 200cc injectors in my truck with their tuning. My Ford HD tranny went out about 3 weeks after the injectors. I installed a stock used tranny with 88k on it and it lasted less than 3 days. I purchased a Heavy duty billet built transmission from one of the highly recommended tranny builders ( I don't want to mention the name because I don't want this to turn into a BTS v.s. Woods v.s. Suncoast v.s. ATS debate) It was a great choice and I know the builder is going to take care of me. Anyways my question is all three of these transmissions went out in the same way and I am wondering if it could be a pcm/ tuning problem causing the failures. Heres how it happens

Tranny #1 115k
The 1st transmission (HD Ford with 115k) went out while I was climbing a fairly steep hill in the middle of a hay field and just started slipping. I started to head back to town and it didn't want to upshift into 2nd gear it just revved out in between 1st and 2nd. I let off of it and it shifted and shuddered really bad I am surprised I still have a rear end.I made it about 3 miles and I lost all forward clutches and had good reverse.

Tranny #2 88k
I borrowed this from a good friend to try and get me by until the builder could get my built tranny built and shipped up north to me. Well this tranny lasted about 3 to 4 days less than 200miles and it went out pretty much the same exact way. While it went to upshift it slipped going up a on ramp I let off and continued about 800yds and it started slipping and shuddering really bad on the highway. I lost all forward gears and had reverse.

Tranny #3
Brand new Billet shafted built to the nuts Tranny 150miles
Well I got my awesome new tranny and it was working great until I hooked up a load of cows and started to haul with it. I didn't feel any shudder while pulling,good firm shifts it was pulling great and I was happy. Until I started up this steep a$$ hill It was in 2nd and as I was pulling the hill it went to downshift to 1st and it SLIPPED in between shifts. I made it probably about 5 more miles to the next big a$$ hill and I put it into 4LOW and made it about 200 yards up the hill and I lost all forward gears. I put a pressure gauge on it and I was getting 190 psi stalled in forward gears and around 300psi in reverse. While I was stalling it and checking pressures The Front clutches seized together giving me forward in N D 2 1 gears and of course no reverse because it was fighting the seized up forward clutches.

Anyways now you know the story

The highest I saw for temps was about 185* to 190* on all three trannys. The builder said the pressures match exactly where he would like to see them but my only concern is I can't replicate the 1 to 2 shifts to see if the pressure is doing anything funny there so that is what has me worried at this point. I am thinking that maybe the tuning is causing the problems just because swamps has a lot of tranny tuning in with their tunes.

How does the computer control the shifts?
What should the psi be doing when it is shifting?

COULD this a Pcm problem,or a tuning problem?
Should I go with a stand alone Tcm like a trans commander or Co pilot?
What are your thoughts as to what this could be?
Sorry for the long post and Thanks for the help in advance.
KYLER


2001 Ford f250 7.3L ccsb lariat
4in air bag lift
Swamps 200cc/30's
Swamps and php tuning
Swamps Idm
Bts twin hpop
Dieselsite RR
John woods street trans
6.0 cooler
Ceramic coated 38R w/ WW2
Ceramic coated Bellowed upipes
unique metal product air filter system
09 mirrors
2009 taillights
2007 harley HID projectors
stancor relay
44gal excursion tank
09 badges
09 tailgate
295/65/20 trail grapplers

2013 F250 cclb Kodiak Brown.
Bone stock
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post #2 of 3 Old 06-14-2013, 12:06 PM
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whar are you running for a torque converter?

you didn"t reuse the same one all 3 times did you?

i know a bad/improperly seated torque converter can kill a transmission quick and i see no mention of a new one.

2002 F250 7.3/JW Tow master 4r100 203k miles
Mods:explorer heater valve, WR GP relay, RiffRAff boots, lariat overhead console, Hydra chip, 6637 mod, 6.0 cooler, AIH delete and isspro2 trans, egt, and boost gauges. 92 gallon aux tank with a total capacity of 130gallons, 1800 mile range , 4" MBRP straight Piped. 2" Warrior shackles
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post #3 of 3 Old 06-14-2013, 12:36 PM Thread Starter
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Quote:
Originally Posted by alaskan155 View Post
whar are you running for a torque converter?

The converter in the built tranny is a custom triple disc billet converter built for the trans builder I really don't know who makes it for him. But it is a piece of art that's for sure! He might even do it himself

you didn"t reuse the same one all 3 times did you?

No, the 1st install was a new one, second a used one that came with the tranny, and 3rd a triple disc from the builder. I will just say that there is two guys I would buy a trans from and they are John Wood or BTS. And they both know their trans

i know a bad/improperly seated torque converter can kill a transmission quick and i see no mention of a new one

I'm sure the converter was seated all the way. .


Just to clear up the confusion I got 115k out of the 1st tranny, around 200 miles out of the second tranny and around 150 miles out of the 3rd tranny.

thank you kyler


2001 Ford f250 7.3L ccsb lariat
4in air bag lift
Swamps 200cc/30's
Swamps and php tuning
Swamps Idm
Bts twin hpop
Dieselsite RR
John woods street trans
6.0 cooler
Ceramic coated 38R w/ WW2
Ceramic coated Bellowed upipes
unique metal product air filter system
09 mirrors
2009 taillights
2007 harley HID projectors
stancor relay
44gal excursion tank
09 badges
09 tailgate
295/65/20 trail grapplers

2013 F250 cclb Kodiak Brown.
Bone stock
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