How's every ones 6.4 stock tranny holdin up?

sootie · Jul 12, 2013

i seem to have bad luck. anything over 40% throttle i get a massive rev slam on the 3-4 shift. squirts trans fluid out the breather and pan gasket. has dd solenoid installed. it started acting up on the test drive when the build was complete. i dont think the clutches are smoked i think something has failed mechanically but i know nothing about transmissions.
anyways-i cant afford a trans right now regardless. only 86k miles on it. tuned for not even a month.

jdgleason · Jul 12, 2013

Pump maybe?

sootie · Jul 12, 2013

jdgleason said:
Pump maybe?

any tips you can give me on what to check or what to do?

jdgleason · Jul 12, 2013

You can actually put a pressure gauge in line... Then you could check it while you are driving. Make sure you have good pressure between shifts, etc.

Pmac21 · Jul 12, 2013

Mine has done the rev slam 3-4 times over the past year and a half, and I have noticed fluid around my pan. Could this be from the slam? I was thinking I needed a new gasket?

Edit: The rev slams always happen when I get out of the throttle for a turn and get back in it going around 30mph. I usually catch it before the rpms get up very high so it isn't too harsh.

jdgleason · Jul 12, 2013

Pmac21 said:
Mine has done the rev slam 3-4 times over the past year and a half, and I have noticed fluid around my pan. Could this be from the slam? I was thinking I needed a new gasket?

Edit: The rev slams always happen when I get out of the throttle for a turn and get back in it going around 30mph. I usually catch it before the rpms get up very high so it isn't too harsh.

I doubt it. Mine did that way back when I was running KEM tuning. New tuning now and it has never done it again.

Pmac21 · Jul 12, 2013

Yea I would love to run mcc tuning, but I don't want to have to buy an H&S off road tuner and the mcc license after spending the money on the spartan.

jdgleason · Jul 12, 2013

I hate to spend other people's money.... but it's worth it.

sootie · Jul 12, 2013

i am running the MCC tunes from Gearhead as well. JD are you having the issue where if you are cruising at 60+mph and make it downshift the TC wont lock in 4th?

jdgleason · Jul 12, 2013

sootie said:
i am running the MCC tunes from Gearhead as well. JD are you having the issue where if you are cruising at 60+mph and make it downshift the TC wont lock in 4th?

No sir... but I have gearhead's tunes on a livewire. That's odd though, I haven't heard of that.

Csilva187 · Jul 12, 2013

Sootie- Mine does also, Matt emailed me saying it was a limitation in software and to check back end of the month for any updates. Anyhow I get fluid here and there if I running the girl good. I replaced gasket and then realized I overfilled the dumb thing lol. So I just wash the excess off when I wash truck if need be. Otherwise I'm not concerned and its been holding just fine knock on wood... Well besides the pucker up converter unlock won't lock then lock episodes.

Stroked777 · Jul 12, 2013

sootie said:
i am running the MCC tunes from Gearhead as well. JD are you having the issue where if you are cruising at 60+mph and make it downshift the TC wont lock in 4th?

i was talk to matt a few weeks ago, he was asking if my truck was doing it and my truck isnt and he said he gave me a new tranny file so i think hes gunna go with the new trans file he made up

Csilva187 · Jul 12, 2013

Really? Nice!

jdgleason · Jul 12, 2013

Awesome. Matt's bad ass to work with for sure.

sootie · Jul 12, 2013

Stroked777 said:
i was talk to matt a few weeks ago, he was asking if my truck was doing it and my truck isnt and he said he gave me a new tranny file so i think hes gunna go with the new trans file he made up

i cant wait then.

i just talked to him today and he didnt have anything to offer me at this point. mine is a Job 3 though-i dont know if that makes a difference.

ingrahams · Jul 13, 2013

Trans lasted about 8k miles after it was tuned, it never shifted correctly when at wot and when I drove it down to MPD for the build I lost 5th and reverse on the way down. Pretty sure it had a hard 80000 miles before I bought it.

jdgleason · Jul 13, 2013

Those with trans failures - what tuning were you running when the trans let go? Truck ever had other tuning?

powerstrokin15 · Jul 13, 2013

53k, mods in sig, stock trans still hanging in there. idp tuning.

Eric@HoldersDiesel

Strokin6.4 · Jul 13, 2013

Craig tunes on MCC as well. His trans tunes shift NICE! H&S shifts better than SCT for some reason.

Sent from my SCH-I535 using Tapatalk 2

jimdawg185 · Jul 14, 2013

Had my truck at the track. Trans shifted perfect! Even on really hard launches. Traction bars made the trans seem like a different animal!
Matt's hybrid tune