After 6 speed build no lockup?

[Bonestock]

Hello all,

I had purchased a Suncoast Gmax 6.3R Kit and did alot of reading and research before I took this on. I visited with George from Suncoast and many others and was very careful to clearance everything out properly. I followed the Suncoast directions spec sheet and here is what I had:

C1: .090 GMAX
C2: .075 GMAX
C3: .072 GMAX
C4: .072 GMAX
C5: .183 - This is alto power pack measured off instructions from the tab in case to apply plate.

The trans was built before with an old Suncoast Kit with 0ne sided Carbolites in the C3..... You know the rest. Hydraulic mods were the Suncoast Gmax and Transgo Jr.


The Converter I had from the first build was a Precision ML. I liked the converter and used to run it with my Compound setup. I am now stock but plan on at some point going back to compounds. I sent the Converter into Precision and had them do a cut / clean and also had them install billet stator and raised the stall speed to 2300. When I got the Converter back I got a Sled Puller 2300 303538-HSP. The Converter brake stall speed seems way high.

The problem that I am having is the converter will not lockup @ all anywhere. Not in tow haul not wot after 2nd nada. I logged a bunch of info on this with v2 and was curious on what you guys think.


Also Trans has 700 miles on it now. I changed the spin on and looks fine.
How the hell do I load a log file on here? LOL.

 

[Mike L.]

You need to check if the command was given by the TCM. If it was, next thing to check is the rpm slip. If the slip speed starts going into the hundreds, it's not locking at all. Converter flow valve, sealing ring on the stator support, or broken wire might be the problem.

 

[Bonestock]

Converter slip rpm was high like 1000rpm wot and psi on holding was only 232 psi. Command is 0 psi wot on tcc lock.

 

[Bonestock]

You need to check if the command was given by the TCM. If it was, next thing to check is the rpm slip. If the slip speed starts going into the hundreds, it's not locking at all. Converter flow valve, sealing ring on the stator support, or broken wire might be the problem.

I will call tommorrow for parts. Thanks!

 

[Mike L.]

Converter slip rpm was high like 1000rpm wot and psi on holding was only 232 psi. Command is 0 psi wot on tcc lock.

You can not read pressure unless you have a gauge on the pressure port. We'll talk tomorrow.

 

[Bonestock]

You can not read pressure unless you have a gauge on the pressure port. We'll talk tomorrow.

Sounds good. I was just going off holding psi in efi logs.

 

[Mike L.]

Sounds good. I was just going off holding psi in efi logs.

You are reading a preprogrammed number that is there to tell you that you do have pressure. Even if you installed my spring with both shims ( 350psi ) it would still read 232psi.

 

[Bonestock]

You are reading a preprogrammed number that is there to tell you that you do have pressure. Even if you installed my spring with both shims ( 350psi ) it would still read 232psi.

Good deal that makes me feel better for now. I was thinking I should be 280-300 psi. I will call tommorrow. Thanks Mike.

 

[minerigger]

Bone I want to see this ride of yours

 

[paint94979]

do you have a lockup box?

 

[Bonestock]

Bone I want to see this ride of yours

I will hit you up when I next make Casper!

 

[Bonestock]

do you have a lockup box?

No,

I have an EFI known good lockup tune with stock precision ml. I also ran stock tcm tune. No lockup whatsover in 700 miles of light driving break in trans on ice roads lol. I am trying to get my hands on a Tech 2 to troubleshoot this thing but no avail within 100 miles of where I live in the sticks!

Mike L how about a Snap On Modis?

 

[Mike L.]

No,

I have an EFI known good lockup tune with stock precision ml. I also ran stock tcm tune. No lockup whatsover in 700 miles of light driving break in trans on ice roads lol. I am trying to get my hands on a Tech 2 to troubleshoot this thing but no avail within 100 miles of where I live in the sticks!

Mike L how about a Snap On Modis?

Should work fine for diagnosis.

 

[Evan@InglewoodTrans]

If you can find TCC solenoid duty cycle % you can see if lock up is being commanded.

 

[Bonestock]

If you can find TCC solenoid duty cycle % you can see if lock up is being commanded.

I didnt find any TCC Duty Cycle pids? I did find a TCC apply psi and it has never came off of 0psi.

 

[Bonestock]

Should work fine for diagnosis.

Cool,

I will test this out with a Modis today. Thanks, Randy.

 

[Evan@InglewoodTrans]

I've logged TCC solenoid duty cycle with a snap on solus so I would assume the modus has it if it's up to date.

 

[Bonestock]

I've logged TCC solenoid duty cycle with a snap on solus so I would assume the modus has it if it's up to date.

Well I just got done with Modus. The tcc slip rpm would go up to 1000 rpm under light accellearation and commanded lockup psi never left 0 psi. I couldnt find any duty cycle info on tcc.

 

[thunder550]

EFILive PID name is GM.TCCDC for commanded duty cycle and GM.TCCSLIP for slip RPM. See the blue highlighted ones in the attached screenshot.

 

[Mike L.]

Try locking it manually with the scanner.